WO2019004922A1

WO2019004922A1 - Coating system, method of application and kit for use

Info

Publication number: WO2019004922A1
Application number: PCT/SE2018/050706
Authority: WO
Inventors: Matthias Weber; Siavash DARZI; Thomas Brokamp; Cecilia HANSSON; Johan FAGEFORS; Nicola Rehnberg
Original assignee: Bona AB
Priority date: 2017-06-30
Filing date: 2018-06-28
Publication date: 2019-01-03

Abstract

The present invention relates to a coating composition system for treating articles, comprising at least a first and at least a second composition, characterized by a) said first coating composition comprising a silane containing component and optionally a reactive diluent, wherein the first coating composition has a viscosity of about 0.05-10 mPa s; b) said second coating composition comprising a waterborne dispersion, and optionally a crosslinker. The present invention further relates to uses, articles, and a kit thereof, and a method of application.

Description

COATING SYSTEM, METHOD OF APPLICATION AND KIT FOR USE

Field

The present invention relates to a coating composition system, a method of treating a substrate, and a kit of parts.

Background

There are many coating compositions available to treat and protect the material they are applied to. However, it is well known that some substrates are very difficult to coat as raw materials due to e.g. components migrating from within the substrate to the surface thereof. It is also well known that some surface treated substrates have the same problems and a surface treated substrate may also be very smooth and slippery making it difficult for new components to attach thereto. Also, it is preferable from an

environmental point of view to use waterborne coatings compared to organic solvent-based coatings. However, waterborne coatings may on some substrates have a dull appearance and form undesirable white stains of the dried substrate. Properties such as adhesion and appearance are important factors for coatings. Another issue with coating of substrates, e.g. floorings, is that the area treated needs to be closed during the treatment and drying period, providing an inconvenience for different subjects. Thus, it would be beneficial to find new ways to limit the treatment and drying times. Also, for a person performing the treatment a decreased treatment time is beneficial as that would allow for more assignments and thus of financial interest.

US2016/0108280 discloses coating materials comprising adduct of isocyanatosilanes with hydroxyfunctional compounds, catalyst and

aminosilane.

US2015/0191625 discloses coating materials comprising

polyisocyanate, hydroxy containing binder, adduct of isocyanatosilanes with alcohol, and catalyst. WO2017/055418 discloses coating materials comprising adduct of isocyanatosilanes with hydroxy-functional compounds, alkoxysilane containing silicon resin, catalyst and aminosilane.

US2015/0225337 discloses a silane terminated copolymer.

Thus, there is a need to provide new systems and application methods with improved properties and solve at least some of the problems with prior art.

Summary

The present invention relates to a coating composition system having good adhesion and other mechanical properties, and good aesthetic properties such as "Anfeurung", i.e. the look of a solvent based coating system. The present invention further relates to a method of treating a substrate to provide a good resistant coating system in a fast and easy manner for the user. The present invention also relates to a kit of parts including the components to provide said coating system. The present invention provides different articles treated according to the invention.

Detailed description

One aspect of the present invention is to provide a coating composition system for treating articles, comprising at least a first and at least a second composition, characterized by

a) said first coating composition comprising a silane containing component and optionally a reactive diluent, wherein the first coating composition has a viscosity of about 0.05-10 Pa s;

b) said second coating composition comprising a waterborne dispersion, and optionally a crosslinker.

The first coating composition has a viscosity of about 0.05-10 Pa s, such as about 0.05-5 Pa s, or about 0.05-2 Pa s, or about 0.05-1 Pa s, or about 0.1 -5 Pa s, or about 0.1 -1 Pa s, or as about 0.1 -0.5 Pa s, or as about 0.2-0.3 Pa s. In one embodiment said silane containing component may be a silane containing oligomer and/or polymer. The molecular weight of a silane functional oligomer/polymer is preferably about 300-3000 g/mol.

The silane containing component may be:

i. an adduct of at least one isocyanatosilane, and at least one

compound selected from the group hydroxy-functional compound, amino-functional compound, and aminohydroxy-functional compound, or derivative thereof;

ii. an adduct of at least one aminosilane and at least one isocyanato- functional compound; or

iii. an adduct of at least one aminosilane and at least one acrylate- functional compound.

The silane containing component may be a poly(epoxisilane). The silicone component can be derived from copolymerisation of a

glycidyl(alkyl)alkoxysilane and an alkylene oxide, such as ethylene oxide, propylene oxide, a cyclohexene oxide.

The acrylate-functional compound, found in iii), may be a polyether acrylate/methacrylate, such as polyethylenglycol diacrylate,

polypropyleneglycol diacrylate, ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, ethoxylated pentaerythritol tetraacrylate, propoxylated pentaerythritol tetraacrylate, ethoxylated glycerol triacrylate, propoxylated glycerol triacrylate, ethoxylated neopentylglycol diacrylate, propoxylated neopentylglycol diacrylate, ethoxylated bisphenol diacrylate, propoxylated bisphenol diacrylate, an amine-modified polyether acrylate, a polyester acrylate, an epoxy acrylate or a urethane acrylate.

The isocyanatosilane, found in i), may be an isocyanatoalkyl- (alkyl)alkoxysilane, i.e. an isocyanatoalkyl-alkoxysilane or isocyanatoalkyl- alkylalkoxysilane. The isocyanatosilane may be selected from

isocyanatoalkyl-alkyldialkoxysilane and/or isocyanatoalkyl-trialkoxysilane.

In one embodiment the isocyanatosilane may contain alkoxysiloxy groups attached to the silicone atom of the isocyanatoalkyl- (alkyl)alkoxysilane. In one embodiment the alkoxy group of the isocyanatoalkyl- (alkyl)alkoxysilane may selected from the group methoxy, ethoxy, propoxy, butoxy, pentoxy, ethylenedioxy, 1 ,2-propylenedioxy, 1 ,3-propylenedioxy, substituted 1 ,3-propylenedioxy, such as 2-methyl-1 ,3-propylenedioxy, or 2,2- dimethyl-1 ,3-propylenedioxy, ethoxyethoxy, and any combination thereof. For example, the alkoxy group may be selected from methoxy, ethoxy, and any combination thereof.

In one embodiment the alkyl groups of the isocyanatoalkyl- (alkyl)alkoxysilane may be the same or different, and selected from the group linear or branched alkylene chains having 1 -4 carbon atoms. The alkyl groups may be selected from the group methyl, ethyl and propyl, and any

combination thereof; such as selected from isocyanatopropyltrialkoxysilanes, isocyanatomethyltrialkoxysilanes, isocyanatomethylmethyldialkoxysilanes, isocyanatomethylethyldialkoxysilanes, and any combination thereof.

In one embodiment the isocyanatoalkyl-(alkyl)alkoxysilane may be selected from the group 3-isocyanatopropyltrimethoxysilane, 3- isocyanatopropyltriethoxysilane, 2-isocyanatoethyltrimethoxysilane, 4- isocyanatobutyltrimethoxysilane, isocyanatomethyltrimethoxysilane, isocyanatomethyltriethoxysilane, isocyanatomethytriisopropoxysilane, 3- isocyanatopropylmethyldimethoxysilane, 2-isocyanatoethylmethyl- dimethoxysilane, isocyanatomethylmethyldiisopropoxysilane, 3- isocyanatopropylmethyldiethoxysilane, 4-isocyanatobutylmethyl- dimethoxysilane, isocyanatomethylmethyldimethoxysilane,

isocyanatomethylmethyldiethoxysilane, and any combination thereof;

preferably selected from the group 3-isocyanatopropyltrialkoxysilanes or isocyanatomethyltrialkoxysilanes; more preferably 3- isocyanatopropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, isocyanatomethyltrimethoxysilane, isocyanatomethyltriethoxysilane, and any combination thereof.

In one embodiment the silane containing component may be present in the first coating composition in an amount of about 10 to 100 wt%, such as 25 to 100 wt%, 30 to 100 wt%, 40 to 100 wt%, 50 to 100 wt%, 60 to 100 wt%, 70 to 100 wt%, 80 to 100 wt%, 90 to 100 wt%, or 10-90 wt%, based on the first coating composition. Another example, the silane containing component may be present in an amount of about 10 to 80 wt%, based on the first coating composition. Further examples, the silane containing component may be present in the first coating composition in an amount of about 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or 100 wt%.

In one embodiment at least one hydroxy-functional compound, found in i), is selected from the group monoalcohols, polyols, hydroxyl group- containing polymers, or any combination thereof.

Monoalcohols, may be selected from monofunctional branched or linear alcohols or mixtures thereof having 1 to 50 carbon atoms, such as 1 to 22 carbon atoms. The monoalcohols may be selected from the group consisting of methanol, ethanol, propanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, propylene glycol 1 - methyl ether, propylene glycol 2-methyl ether, propylene glycol 1 -ethyl ether, propylene glycol 1 -butyl ether, and any combination thereof.

Polyols, such as diols, triols and tetraols may be selected from difunctional, trifunctional, and tetrafunctional, respectively, branched or linear alcohols or mixtures thereof having 1 to 50 carbon atoms, such as 1 to 22 carbon atoms.

Polyols may be selected from the group consisting of ethylene glycol, diethyleneglycol, oligoethyleneglycols, propyleneglycol, dipropyleneglycol, oligopropyleneglycols, butyleneglycol, pentyleneglycol, hexyleneglycols, decanediol, dodecanediol, neopentylic polyols such as neopentyl glycol, hydroxypivalyl hydroxyopivalate, 2-butyl-2-ethylpropanediol, 2-methyl-1 ,3- propanediol, dimer fatty alcohols, cyclohexanedimethanol, pentaspiroglycol, tricyclodecane dimethanol, trimethylpentanediol, trimethylolpropane, 3- methyl-1 ,5-pentanediol, trimethylolethane, fatty acid polyols such as ricinoleic acid derivatives, epoxidized oil polyol derivatives, glycerol, pentaerythritol, dipolyols such as dineopentylglycol, ditrimethylolpropane, dipentaerythritol, 2,2,6,6-tetrakis(hydroxymethyl)cyclohexane-1 -ol, alkoxylated neopentyl polyols such as ethoxylated or propoxylated neopentylglycol,

trimethylolpropane, pentaerythritol, ditrimethylolpropane, dipentaerythritol, and any combination thereof.

Hydroxyl-group functional polymers may be selected from the group consisting of polyesterpolyols having a molecular weight of about 300-1500 g/mol from above mentioned polyols and dicarboxylic acids such as succinic acid, adipic acid, sebacic acid, phthalic acid, isophtalic acid, terephtalic acid, dimer fatty acids or carboxylic acid anhydrides such as phthalic anhydride or succinic anhydride or esters of mentioned carboxylic acids, polylactone polyols such as polycaprolactone, polyether polyols such as polyethylene oxide, polypropylene oxide, polytetrahydrofuran, poly(meth)acrylates, polycarbonate polyols, epoxy resins, cellulose derivatives, FEVE

(Fluoroethylene-Alkyl Vinyl Ether), alkyds, polyurethane polyols, and any combination thereof.

The at least one amino-functional compound, found in i), may be selected from the group of monoamines, polyamines, amine group-containing polymers, and any combination thereof.

Monoamines, may be selected from monofunctional branched or linear amines or mixtures thereof having 1 to 50 carbon atoms, such as 1 to 22 carbon atoms. The monoamines may be selected from the group consisting of 2-Ethylhexylamine, butylamine, Di-(2-ethylhexyl)amine, dibutylamine, dicyclohexylamine, diethylamine, dimethylamine, dipropylamine,

ditridecyamine, ethylamine, isopropylamine. N-ethyl-N-propylamine, N- methyl-N-isopropylamine, N-octylamine, propylamine, tert-butylamine, tridecylamine, 2-methoxyethylamine, 3-methoxypropylamine, di-(2- methoxyethyl)amine, alkylated polyether amines.

Polyamines, such as diamines, triamines and tetraamines may be selected from difunctional, trifunctional, and tetrafunctional, respectively, branched or linear amines or mixtures thereof having 1 to 50 carbon atoms, such as 1 to 26 carbon atoms. The polyamines may be selected from the group consisting of 1 ,2-propylenediamine, 1 ,3-diaminopropane, 3- (cyclohexylamino)propylamine, 3,3'-dimethyl-4,4'- diaminodicyclohexylmethane, 4,4'-diaminodicyclohexylmethane,

ethylenediamine, isophorondiamine, 2-methyl-1 ,5-pentanediamine, 2,2- dimethylpropnae-1 ,3-diamine, octamethylenediamine, butandiamine, hexamethylenediamine, piperazin, diethylenetriamine, dipropylenetriamine, N,N-bis-(3-aminopropyl)methylamine, 3-(2-aminoethylamino)propylamine, N'N'-bis-(3-aminopropyl)ethylenediamine, 4,7, 10-trioxatridecan-1 ,13-diamine, 4,9-dioxadodecane-1 ,12-diamine, cycloaliphatic bis(secondary amine), Jefflink 754 (Huntsman), polyoxyethylenediamines, polyoxypropylene- diamines, polyoxyethylene/polyoxypropylene diamines, PTMEG diamines, Jeffamine D-2000, Jeffamine ED-900, Jeffamine ED-2003 (All from

Huntsman), the products from the reaction of polyamines and Michael acceptors such as diethyl maleate, dibutyl maleate or Bis(2-ethylhexyl) maleate, i.e. the reaction of Jeffamine and maleate, and polyaspartic esters such as Desmophen NH2850.

Amine group-containing polymers may be selected from the group consisting of amine group-containing polymers having a molecular weight of about 300-2500 g/mol.

The at least one aminohydroxy-functional compound, or derivative thereof, found in i), may be selected from the group of polyetheramines such as polyoxyethylenemonoamines, polyoxypropylenemonoamines,

polyoxyethylene/polyoxypropylene monamines such as Jeffamine M-2005 and Jeffamine M-1000 from Huntsman, PTMEG monoamines,

diethanolamine, monoethanolamine, diisopropanolamine, isopropanolamine, butylethanolamine, ethylethanolamine, 2-(2-aminoethoxy)ethanol, 3-amino-1 - propanol, 5-amino-1 -pentanol, hydroxyethylpiperazine, N-(2- aminoethyl)ethanolamine, aminoalcohols such as triethanolamine,

triisopropanolamine, butylethanolamine, methyldiethanolamine,

methyldiisopropanolamine, and any combination thereof.

The silane containing component, as found in ii), may be an adduct of at least one aminosilane and at least one isocyanato-functional compound, and as found in iii) may be an adduct of at least one aminosilane and at least one acrylate-functional compound. The aminosilane may be selected from the group of (alkyl)aminoalkyl- (alkyl)alkoxysilanes, polyaminosilanes and/or Bis((alkyl)alkoxysilylalkyl)- amines. In one embodiment the (alkyl)aminoalkyl(alkyl)alkoxysilanes may be selected from an aminoalkylalkoxysilane, an aminoalkylalkylalkoxysilane, an alkylaminoalkylalkylalkoxysilane, an alkylaminoalkylalkoxysilane, and any combination thereof.

In one embodiment the aminosilane may contain alkoxysiloxy groups attached to the silicone atom of the propylamine.

In one embodiment the polyaminosilane may be selected from the group of diaminosilanes or triaminosilanes, and any combination thereof, for example, 2-aminoethyl-3-aminopropylmethyldimethoxysilane, 2-aminoethyl-3- aminopropyltrimethoxysilane, 2-aminoethyl-3-aminopropyltriethoxysilane, 2- aminoethyl-3-aminopropylmethyldimethoxysilane, 2-(2-aminoethyl)amino- ethylpropyltrimethoxysilane, and any combination thereof.

In one embodiment the bis((alkyl)alkoxysilylalkyl)amines may be selected from, but not limited to, bis(3-triethoxysilylpropyl)amine and/or bis(3- trimethoxysilylpropyl)amine.

In one embodiment the alkoxy group of the (alkyl)aminoalkyl(alkyl)- alkoxysilanes may be selected from the group methoxy, ethoxy, propoxy, ethylenedioxy, 1 ,2-propylenedioxy, 1 ,3-propylenedioxy, or substituted 1 ,3- propylenedioxy such as 2-methyl-1 ,3-propylenedioxy, or 2,2-dimethyl-1 ,3- propylenedioxy, and any combination thereof. For example, the alkoxy group may be selected from methoxy, ethoxy, and any combination thereof.

In one embodiment the alkyl groups of the (alkyl)aminoalkyl(alkyl)- alkoxysilanes may be the same or different, and selected from the group linear, branched, or cyclic alkyl or alkylene chains having 1 -6 carbon atoms. The alkyl groups may be selected from the group methyl, ethyl, butyl, propyl, isobutyl, cyclohexyl, methylene, propylene, isobutylene and any combination thereof; such as selected from aminopropyltrialkoxysilanes,

aminomethyltrialkoxysilanes, aminomethylmethyldialkoxysilanes,

aminomethylethyldialkoxysilanes, and any combination thereof. The

(alkyl)aminoalkyl(alkyl)alkoxysilanes may be selected from 3- aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3- aminopropylmethyldimethoxysilane, 3-aminopropylmethyldiethoxysilane, N- ethyl-3-aminopropyltrimethoxysilane, N-ethyl-3-aminopropyltriethoxysilane, N- ethyl-3-aminopropylmethyldimethoxysilane, N-ethyl-3- aminopropylmethyldiethoxysilane, N-ethyl-3-aminoisobutyltrimethoxysilane, N-ethyl-3-aminoisobutyltriethoxysilane, N-butyl-3-aminopropyltriethoxysilane, N-butyl-3-aminopropyltrimethoxysilane, N-cyclohexyl-3- aminopropyltrimethoxysilane, N-cyclohexyl-3-aminopropyltriethoxysilane, N- cyclohexyl-aminomethyltriethoxysilane, and any combination thereof.

In one embodiment the aminosilane is an adduct from the reaction of one or more aminosilanes with a Michaelacceptor, such as diethyl maleate, dibutyl maleate and/or Bis-(2-ethylhexyl) maleate.

In one embodiment the isocyanatofunctional compound, found in ii), may be selected from the group of polyisocyanates, polymers of

polyisocyanates and polyols. The polyisocyanate may be selected from hexamethylene-1 ,6-diisocyanate, isophorone diisocyanate,

dicyclohexylmethane diisocyanate, 1 ,4-cyclohexane diisocyanate, oligomers of the mentioned diisocyanates such as Desmodur N3900 from Bayer, Easaqua L 600 from Vencorex, Tolonate XFlo 100 (a biobased aliphatic polyisocyanate from Vencorex,) or the polymer from the reaction of

mentioned polyisocyanates with low molecular weight polyols or polymeric polyols such as polyether polyols, polyester polyols, polycarbonate polyols, which are mentioned in the prior disclosure of i), e.g. under polyols and polyesterpolyols.

In one embodiment the silane containing component comprises silane terminated polymers, e.g. the polymers may have silane terminations in one or more ends of the backbone polymer. Also the adducts according to the invention may have silane terminations in both ends.

Terminal alkyl or alkoxy groups attached to the silane may have been substituted as a whole or partially with other silane containing compounds. These substitutions relate to the alkyl or alkoxy groups not forming a part of the backbone of the polymer or adduct.

The reactive diluent may be selected from the group oil compositions also referred to as oils, which may comprise an unsaturated triglyceride, and/or an alkyd; polyfunctional isocyanates; polyfunctional aziridines;

polyfunctional carbodiimides; and silane containing components of lower molecular weight.

In one embodiment, the silane containing component may comprise, in addition to a silane containing component (e.g. oligomer and/or polymer), additional low molecular weight silane components such as those selected from the group vinyltrimethoxysilane, vinyltriethoxysilane, oligomers of tetramethoxysilane, oligomers of tetraethoxysilane, oligomers of

vinyltrimethoxysilanes, oligomers of vinyltriethoxysilanes,

glycidyltrimethoxysilane, glycidyltriethoxysilane, oligomers of

glycidyltrimethoxysilane, oligomers of glycidyltriethoxysilane,

methacryloyloxypropyltrimethoxysilane, 3-methacryloyloxypropyl- triethoxysilane, aminosilane, and any combination thereof. The aminosilanes may be the same as mentioned in the prior disclosure of ii) and iii),

respectively. However, it is to be noted that when the aminosilane is used as in ii) or iii) the aminogroup is the active part reacting, and when aminosilane is used as additional low molecular weight silane component the silyl group is the active part reacting and the aminogroup is catalytically active.

In one embodiment the additional low molecular weight silane components may be present in the first coating composition in an amount of about 1 -40 wt%, such as 5 to 30 wt%, 10 to 20 wt%, 1 -30 wt%, 1 -20 wt%, or 1 -10 wt% based on the weight of the first coating composition.

The first coating composition may further contain a non-reactive diluent selected from viscosity reducing compounds. The viscosity reducing compounds may be selected from the group of esters and ethers, or a mixture thereof; esters such as butylacetate, polyol esters such as glycerol acetate, glycerol propanoate, propyleneglycol diacetate, dimethyl esters of adipic, glutaric and succinic acids, esters of polycarboxylic acids such as citrates, such as triethyl citrate, triethyl acetylcitrate and tributyl citrate, oligoethylene glycol derivatives, such as oligoethylene glycol alkyl ether esters such as diethylene glycol monobutyl ether butanoate or oligoethylene glycol dialkanoates such as triethylene glycol diacetate, cyclic carbonic esters such as ethylene carbonate or propylene carbonate, ethers such as dimethyldipropylene glycol, dipropylene monomethylether, ethylethylene glycol, methoxypropyl acetate or ethoxypropyl acetate.

Also, another option is to select and add as the reactive diluent, a component which both is a reactive and viscosity reducing compound, such as an oil composition. The reactive diluent according to the invention may be an oil composition, which may comprise an unsaturated triglyceride, and/or an alkyd, optionally further comprising a component selected from a siccative, an anti-skinning agent, a wetting agent, a pigment, and any combination thereof. The triglyceride may be derived from fatty acids such as linoleic acid, linolenic acid, oleic acid, stearic acid, palmitic acid, myristic acid, and lauric acid. The alkyd may be derived from fatty acids, as mentioned above, and a polyester, optionally prepared from polyols such as pentaerythritol, trimethylolpropane, and acids such as o-phthalic acid or anhydride, isophthalic acid, adipic acid. Optionally, the alkyd is a urethane alkyd. The siccative may be based on cobalt, zirconium, iron, manganese compounds, or combinations thereof.

There are commercially available oil compositions, also referred to as oils, suitable as viscosity reducing compounds, for example Bona Craft oil, Bona Craft oil 2K, Bona Hardwax oil, Bona Nordic Tone, Bona Rich Tone.

Also, as the reactive diluent polyfunctional isocyanates, polyfunctional aziridines, polyfunctional carbodiimides, and silane containing components of lower molecular weight can be included as viscosity reducing compound. The polyfunctional isocyanates may be the same as mentioned in the prior disclosure of the isocyanatofunctional compound, found in ii), when as a reactive diluent it is selected from oligomers of the mentioned diisocyanates such as Desmodur N3900 from Bayer, Easaqua L 600 from Vencorex, Tolonate Xflo 100 (a biobased aliphatic polyisocyanate from Vencorex).

In one embodiment the first coating composition of the coating composition system may further comprise at least one catalyst; which may be selected from the group consisting of tin containing compounds, titanium containing compounds, bismuth containing compounds, organic carboxylic acids having a melting point above 60^°, amines or salts thereof, and tetraalkylammonium carboxylates. The tin containing compound may be selected from the group consisting of alkyltin oxides and mixtures thereof, for example di-n-butyltin oxide and di-n-octyltin oxide, dibutyltin carboxylates, for example di-n-butyltin diacetate, di-n-butyltin dilaurate, di-n-butyltin maleate, di-n-butyltin bis-2- ethylhexanoate and also di-n-butyltin dineodecanoate, dioctyltin carboxylates, such as di-n-octyltin diacetate, di-n-octyltin dilaurate, di-n-octyltin maleate, di- n-octyltin bis-2-ethylhexanoate or di-n-octyltin dineodecanoate, and also dialkyltin complexes, for example di-n-butyltin diacetylacetonate.

The titanium containing compounds may be selected from titanates. The carboxylic acids may be selected from salicylic acid, benzoic acid, citric acid, isophthalic acid, phthalic acid, terephthalic acid, trimellitic acid, and any combination thereof; preferably salicylic acid and/or benzoic acid.

The amine may be selected from 1 ,8-diazabicyclo(5.4.0)undec-7-ene (DBU), diazabicyclo[2.2.2]octane (DABCO), N,N-diisopropylethylamine, tetramethylguanidine, 1 ,5,7-triazabicyclo[4.4.0]dec-5-ene, and any

combination thereof. Amine catalysts can be made less corrosive, but still catalytically active, by complete or partial neutralization with e.g., methacrylic acid, octanoic acid, bis(2-ethylhexyl) phosphate, or Rhodafac RS-410

(Rhodia).

The tetraalkylammonium carboxylates may be selected from

tetramethylammonium formate, tetramethylammonium acetate,

tetramethylammonium propionate, tetramethylammonium butyrate, tetramethylammonium benzoate, tetraethylammonium formate,

tetraethylammonium acetate, tetraethylammonium propionate,

tetraethylammonium butyrate, tetraethylammonium benzoate,

tetrapropylammonium formate, tetrapropylammonium acetate,

tetrapropylammonium propionate, tetrapropylammonium butyrate,

tetrapropylammonium benzoate, tetrabutylammonium formate,

tetrabutylammonium acetate, tetrabutylammonium propionate,

tetrabutylammonium butyrate, tetrabutylammonium benzoate, and any combination thereof; preferably tetraethylammonium benzoate and/or tetrabutylammonium benzoate. In one embodiment the catalyst may be present in the first coating composition in an amount of up to 4 wt%, such as 0.1 -4 wt%, if the catalyst is selected from carboxylic acids and/or tetraalkylammonium carboxylate; or up to 1 wt%, such as 0.01 to 1 wt%, if the catalyst is selected from any one of tin containing compounds, titanium containing compounds and bismuth containing compounds, based on the total first coating composition.

In one embodiment the first composition may comprise Silres BS 6920, commercially available from Wacker, or Vestanat EP-MF 201 , commercially available from Evonik, or Geniosil XB 502 commercially available from

Wacker.

As defined above, the second coating composition (b) comprises a waterborne dispersion. In one embodiment said waterborne dispersion may comprise polymers selected from the group consisting of polyurethanes, polyacrylates, polyurethane-acrylate hybrids, and any combination thereof. For example, the polyurethanes may be based on aliphatic and/or aromatic isocyanates. Herein, the hybrids may be described as particles comprising both urethane and acrylate polymers. Also, the polyacrylates may be selected from the group consisting of poly(meth)acrylates including copolymers of vinyls and/or styrene, and any combination thereof. The vinyls may be vinylacetate or VEOVA polymers.

In one embodiment the crosslinker comprises a compound selected from the group consisting of isocyanate containing compound, aziridine containing compound, carbodiimide containing compound. Preferred versions are selected from the group polyisocyanate, polyaziridine, polycarbodiimide, and any combination thereof, such as compounds selected from the group hydrophilic, aliphatic polyisocyanate, hydrophilic polyaziridine, hydrophilic polycarbodiimide, and any combination thereof.

In one embodiment the film thickness of first coating composition is at least 1 pm, such as 1 -200 m, or 5-150 m, per layer.

The first coating composition in combination with the second coating composition provides a nice colouring of wood, similar to that of wood coated with UV lacquer, oil, oil-based lacquer and other solventborne lacquers. The present system provides a good adhesion to underlying substrate, as well as between the layers of the system. It also provides a good chemical resistance. The system further provides good scratch resistance and abrasion resistance.

One aspect of the present invention is to provide a method for treating articles, preferably selected from the group consisting of cellulosic articles, comprising:

providing at least one article;

applying on said article, in a sequential manner, at least a first and at least a second coating composition to provide a coating composition system according to the present invention.

In one embodiment the cellulosic article is selected from the group consisting of wood, bamboo, cork, paperboard, fiberboard, paper, and any combination thereof.

The wood may be selected from oak, maple, birch, beech, pine, ash, cherry, spruce, and tropical wood, such as mahogany, teak, ebony, rosewood, narra, chloroxylon, merbau, jatoba, afzelia, mutenye, iroko, gray gum, and ipe.

The present system may be applied to raw surfaces or treated surfaces. Treatments like coatings, stains etc. may be present on the article to be treated. Stained surfaces of the article also include reactive stains. Coated substrates like oil treated, lacquered (e.g. with solventborne or waterborne lacquers, such as UV curing coating), polished, waxed, such as hard-waxed, articles may also be treated according to the present invention. Such surfaces are normally difficult to provide with coatings of other or same type due to lack of sufficient adhesion. However, the present invention provides good intercoating adhesion properties.

In one embodiment the first coating composition and/or said second coating composition of the coating composition system is applied using a method selected from roller coating, brush coating, trowel coating (herein also intended to be interpreted as including: skim coating, filling, or spackling), buffering coating, applicator coating and any combination thereof. Buffer coating may be done by special buffer machines, such as the Bona FlexiSand DSC Buffer.

Sanding may be performed in the present method. Sanding may be done before the article is coated. Sanding may be performed between coating layers, both between coatings of the same coating compositions and between coatings of different coating compositions

In one embodiment the first coating composition may be applied one or multiple times on the article. This is done in a subsequent manner.

In one embodiment, the first coating composition is applied twice before application of the second coating composition one or multiple times. For example, the first coating composition is applied twice before application of the second coating compositions one or two times.

In one embodiment an additional layer of the first coating composition is applied within a week, such as within 4 days, such as within 20h, such as within 16h, such as within 4h, such as within 2h.

In one embodiment an additional layer of the first coating composition is applied after 10 to 240 minutes, preferably 20 to 180 minutes.

In one embodiment an initial coating of the second coating composition is applied within 1 week, such as within 4 days, within 20 h, within 16 h, of a prior application of the first coating composition.

In one embodiment an initial coating of the second coating composition is applied after 10 to 240 minutes, preferably 20 to 180 minutes.

In one embodiment the second coating composition is prepared by providing the waterborne dispersion before application of the second coating composition on the article.

In another embodiment the second coating composition is prepared by mixing the waterborne dispersion and the crosslinker before application of the second coating composition onto the article, e.g. according to manufacturers instructions.

In one embodiment the crosslinker is added to the waterborne dispersion in an amount of about 1 -20 wt%, preferably about 5-15 wt%, preferably about 7-13 wt%, or e.g. according to the manufacturers

instructions. The present method may be performed by the steps: optionally sanding the article; applying a layer of the first coating composition on the article; allowing drying for about 10-240 min, such as about 20-180 min;

applying a second layer of the first coating composition on the article; wait 10- 240 min, such as about 20-180 min; optionally sanding the article; applying a layer of the second coating composition on the coated article.

Before the application of the second coating composition the surface of the first coating composition might be slightly tacky.

In one embodiment a pretreatment of water popping is performed before application of a first layer of said first coating composition, if said article is a cellulosic article, preferably wood.

If a cellulosic material is used, such as wood, as an article to be treated according to the present invention, the article may be subjected to a pretreatment herein referred to as water popping. Water popping may also be referred to as "grain popping" or "raising the grain". The water popping is a process used to open up the grain of wood flooring. By applying water to the wood before the coating procedure, it opens the grain and makes the wood porous, allowing for better results with the coating procedure. As sanding may have been performed to the article before the present method, the sanding makes the article surface smooth but the grains may become closed and tight, thus water popping may be used to open up the grain structure and allow the coating compositions of the present invention to penetrate better into the wood. The application of water popping also influences the

subsequent coatings by a quicker drying time.

In one embodiment a further treatment is applied to the article before application of said first coating composition and, if present, after said pretreatment of water popping, the further treatment is selected from the group consisting of oil treating; coating with solventborne or waterborne lacquers, such as UV curing coatings; polishing; and waxing.

An oil as disclosed herein, may be composed of an unsaturated triglyceride, and optionally an alkyd, a siccative, anti-skinning agent, wetting agent, a pigment. The triglyceride may be derived from fatty acids such as linoleic, linolenic, oleic, stearic, palmitic, myristic, lauric acids. The alkyd may be derived from fatty acids (as above) and a polyester optionally prepared from polyols such as pentaerythritol, trimethylolpropane, and acids such as o- phthalic acid or anhydride, isophthalic acid, adipic acid. Optionally, the alkyd is a urethane alkyd. The siccative (e.g. drying agent) may be based on cobalt, zirconium, iron, manganese compounds, or in combinations thereof.

It has surprisingly been found that application of the first coating composition followed by the second coating composition decreases the time for resistance properties to build up of the second coating composition compared to just using the second composition alone on the article.

One aspect of the present invention is to provide a kit of parts, said kit comprising at least a first and a second coating composition, characterized by a) said first coating composition comprising a silane containing component and optionally a reactive diluent, wherein the first coating composition has a viscosity of about 0.05-10 Pa s;

One aspect of the present invention is to provide use of the present coating composition system for treatment of articles selected from the group consisting of cellulosic articles.

One aspect of the present invention is to provide use of the present coating composition system for fire resistant flooring, spot repair, and intercoat adhesion promotion.

The present system provides more fire resistant coatings, such as floor finishes. It also provides a possibility to repair damaged coated areas, such as a spot repair system. It also provides a good adhesion, wherein the first coating composition may be used as an adhesion promoter for intercoat adhesion on already surface treated substrates.

One aspect of the present invention is to provide use of the present kit of parts for treatment of articles selected from the group consisting of cellulosic articles.

One aspect of the present invention is to provide a cellulosic article treated by the present method. Examples

Merbau and Jatoba wood contain compounds which emerge from the wood and are easily soluble in water. These compounds give rise to undesirable stains on the wood. Merbau and Jatoba were used as substrate in the following examples.

Example 1A

One sample of the wood was untreated.

One sample of the wood was treated with a waterborne polyurethane (PU) coating composition (Bona Traffic) and allowed to dry.

One sample of the wood was skim coated with a silane coating composition, Vestanat EP-MF 201 (Evonik), and allowed to dry for 75 min. Thereafter, a waterborne polyurethane coating composition (Bona Traffic) was applied and allowed to dry. This treatment had a more intense look and warmer colour appearance compared to the other samples. The result is presented in Table 1 .

Table 1 :

Example 1 B

One sample of Merbau and one sample of Jatoba wood were coated with a silane containing composition, Vestanat EP-MF 201 , using trowel and allowed to dry for 75 min. A second layer of Vestanat EP-MF 201 was applied before the first layer had dried completely, and the second layer was allowed to dry for 180 min. Thereafter, a waterborne polyurethane coating

composition (Bona Trafffic) was applied and allowed to dry.

One sample of Merbau and Jatoba were coated with a waterborne polyurethane coating composition (Bona Traffic) with brush and allowed to dry for 90 min. The surface was sanded with 120 pm sanding paper before the second layer was applied and allowed to dry for 180 min. Thereafter, the final layer of Bona Traffic was applied and allowed to dry.

All samples were allowed to dry for four days before adhesion test was carried out. The test was carried out in controlled temperature and humidity (23±2°C and 50±5% RH). The result is defined according to the Standard Test Method for Measuring Adhesion by Tape Test ASTM D 3359-02. The result is presented in Table 2. The classification of adhesion tests are according to ISO 2409:2013, in short presented in Table 3.

Table 2:

Substrate Treatment Classification of Adhesion

Test Results

Merbau 2 x Vestanat EP-MF 201 5B

1 x Bona Traffic

Merbau 3 x Bona Traffic 3B

Jatoba 2 x Vestanat EP-MF 201 5B

1 x Bona Traffic

Jatoba 3 x Bona Traffic 3B Table 3:

Example 2

One sample of oak wood was coated with a silane containing, Vestanat

EP-MF 201 , using trowel and allowed to dry for 90 min. A second layer of

Vestanat EP-MF 201 was applied before the first layer had dried completely, and the second layer was allowed to dry for 240 min. Thereafter, one layer of a waterborne polyurethane coating composition (Bona Traffic) was applied and allowed to dry.

One sample of oak wood was coated with a waterborne polyurethane coating composition (Bona Natural) with brush and allowed to dry for 90 min. The surface was sanded with 120 pm sanding paper before one layer of Bona

Traffic was applied and allowed to dry for 240 min. Thereafter, another layer of Bona Traffic was applied and allowed to dry. Both samples were allowed to dry for four days before different tests were carried out. All tests were carried out in controlled temperature and humidity (23±2°C and 50±5% RH).

One sample of oak wood was coated with a solventborne polyurethane coating composition (Bona Woodline Poly) with brush and allowed to dry for 90 min. The surface was sanded with 120 pm sanding paper before the second layer of Bona Woodline Poly was applied and allowed to dry for 240 min. Thereafter, the final layer of Bona Woodline Poly was applied and allowed to dry.

All samples were allowed to dry for four days before different tests were carried out. All tests were carried out in controlled temperature and humidity (23±2°C and 50±5% RH).

Chemical resistance

The samples were exposed to different chemicals for two hours.

Thereafter, the surface was washed and the remaining spots were judged after 24 hours. The result is presented in Table 4.

Table 4:

5 = No visible changes (no damage)

4 = Minor changes in gloss or color, visible only if the source is reflected on or near the marking and reflected directly in the eyes of the person observing the surface. 3 = Minor markings that are seen from several viewing angles, e.g. an identifiable and almost complete circle or a circular surface.

2 = Clear marking, but however, the surface structure is unchanged to a large extent.

1 = Clear marking, the surface structure is changed, or the surface material is completely or partially destroyed.

Fernox commersially available from Bona Adhesion test

For a coating to fulfill its function of protecting or decorating a substrate, the coating must remain adhered to the substrate. The adhesion for the samples were performed according to the Standard Test Method for Measuring Adhesion by Tape Test ASTM D 3359-02. The result is presented in Table 5. The classification follows the classification as presented in Table 3.

Table 5:

Appearance

Tests of the apparence of the present coating system was compared with reference materials, one waterborne and one solventborne polyurethane. The result is present in Table 6. Table 6:

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and the scope of the appended claims. Example 3

Procedure I - /Amino and isocyanato functional reactants:

Ex. 3.1 : Isophorone diisocyanate (1 1 1 g, 0,50 mol) and vinyltrimethoxysilane (10, 8g) were added to a reaction flask under nitrogen. The stirring was started (200 rpm) and Desmophen NH 2850 (Covestro, 147 g, 0,50 mmol) and dipropylene glycol dimethyl ether (43 g) was added thru a dropping funnel at such a rate that the temperature did not exceed 50 C. Thereafter, Dynasylan 1 122 (Evonik, 212 g, 0,50 mol) diluted with vinyltriethoxysilane (43 g) was added. The reaction was followed by IR and when completed, used as such. Preparations of the examples below essentially as above procedure for ex. 3.1 .

Ex. 3.2: Geniosil XL 926 (Wacker, 31 ,3 g, 0, 1 1 mol), Tolonate X Flow 100 (Vencorex, 38,9 g, 0, 1 1 mol), triethoxyvinylsilane (15 g), oligomeric

trimethoxyvinylsilane (1 g). Ex. 3.3: Dynasylan 1 122 (Evonik, 173 g, 0,50 mol), Tolonate X Flow 100 (175 g, 0,51 mol), trimethoxyvinylsilane (8,7 g).

Ex. 3.4: Vestanat EP-IPMS (Evonik, 164 g, 0,80 mol), Desmophen NH 2850 (236 g, 0,80 mol), triethoxyvinylsilane (40 g).

Ex. 3.5: Geniosil XL 926 (129 g, 0,47 mol), Desmodur N3900 (Covestro, 125 g, 0,7 mol), trimethoxyvinylsilane( 7,6 g), dipropyleneglycol dimethyl ether (25 g).

Ex. 3.6: Geniosil XL 926 (71 g), Tolonate X Flow (100 g), Easaqua L 600 (Vencorex, 20 g), trimethoxyvinylsilane (19 g), dipropylene glycol dimethyl ether (19 g). Ex. 3.7: Geniosil GF 92 (Wacker, 67,2 g, 0,26 mol), Tolonate X Flow 100 (100 g, 0,29 mol), Easaqua L 600 (Vencorex, 20 g, 0,097 mol),

trimethoxyvinylsilane (5,7 g), dipropylene glycol dimethyl ether (19 g).

Ex. 3.8: Dibutyl N-(3-trimethoxysilylpropyl)aspartate (105 g, 0,26 mol), Tolonate X Flow 100 (100 g, 0,29 mol), Easaqua L 600 (20 g, 0,098 mol), trimethoxyvinylsilane (6,7g), dipropylene glycol dimethyl ether (22 g).

Ex. 3.9: Geniosil GF 92 (60 g, 0,23 mol), Tolonate X Flow 100 (120 g, 0,35 mol), Jeffamine M-1000 (Huntsman, 45 g, 0,045 mol), trimethoxyvinylsilane (6,8 g), dipropylene glycol dimethyl ether (22,5 g).

Ex. 3.10: Vestanat EP-IPMS (76,9 g, 0,38 mol), Desmophen NH 2850 (125 g, 0,38 mol), trimethoxyvinylsilane (6,0 g). Ex. 3.1 1 : Bis(2-ethylhexyl) N-(trimethoxysilylpropyl) aspartate (271 g, 0,52 mol), Tolonate X Flow (175 g, 0,52 mol), trimethoxyvinylsilane (6,7 g). Ex. 3.12: Vestanat EP-IPMS (41 g, 0,2 mol), Jeffamine D-2000 (Huntsman, 200 g, 0,20 mol), trimethoxyvinylsilane (3,6 g).

Procedure II - Hydroxy and isocyanato functional reactants:

Ex. 3.13: Isophorone diisocyanate (78,7 g, 0,35 mol) and polyTHF 650 (BASF, 1 12 g, 0, 17 mol) were mixed and stirred 200 rpm in a reaction flask under nitrogen. A drop of Metatin 712 (Dow) was added and the temperature was raised to 80 C. When the reaction was completed, the temperature was reduced to 40 C and Geniosil GF 92 (100 g, 0,36 mol) diluted with

dipropylene glycol dimethyl ether (33 g) was added dropwise. As the viscosity rose, oligomeric trimethoxyvinylsilane (44 g) was added little by little. When the reaction was completed, the product was used as such.

Formulations:

The products of ex. 3.1 to 3.13 were mixed with 3-(trimethoxysilyl)- propylamine (85/15) to give ex. 3.14 to 3.26.

The products of ex. 3.1 to 3.13 were mixed with 3- (triethoxysilyl)propylamine (85/15) and 1 ,8-diazabicyclo(5.4.0)undec-7-ene (DBU, 0.5 %) to give ex. 3.27 to 3.40.

Procedure III - Amino and acrylate functional reactants

Ex. 3.41 : Miramer M3190 (Ethoxylated trimethylolpropane triacrylate from Miwon) (10 g, 0,014 mol) was mixed with 3-aminopropyltrimethoxysilane (7,7 g, 0,043 mol) at ambient temperature. When the reaction was completed, the product was used as such.

Coating examples:

Products of ex. 3.14 to 3.41 were applied to oak lamella, (6.7 x 33.5 cm) and left at ambient conditions for 3-6 hours. Thereafter, a layer of Bona Traffic (waterborn polyurethane finish) was applied on top of the silylated polymer film. After drying for a day at ambient conditions, the coated lamellas were inspected and in all cases showed a warm colour (solvent borne coating look) and good adhesion of the coating composition system. Procedure IV - Hydroxy and isocyanato functional reactants:

Ex. 3.42: PE230 is a polyesterpolyol which has a hydroxyl value of 1 10 mg KOH/g and acid value<2 and is made from a diacid, a polyol and a saturated fatty acid. PE230 (210 g, 0,21 mol) was mixed with isocyanatopropyltri- methoxysilane (82 g, 0,4 mol) and vinyltnmethoxysilane (7,3 g) and heated to 90°C for 4h under a flow of nitrogen gas. When the reaction was completed, the product was used as such. Silane primer composition ex. 3.43:

94 parts of the product from ex. 3.42 was mixed with 5 parts of 3- aminopropyltrimethoxysilane and 1 part of 1 ,8-Diazabicyclo[5.4.0]undec-7- ene (DBU). Silane primer composition ex. 3.44:

94 parts of the product from ex. 3.42 was mixed with 5 parts of 3- aminopropyltrimethoxysilane and 1 part of 1 ,8-Diazabicyclo[5.4.0]undec-7- ene (DBU). 50g of the resulting mixture was mixed with 50g of Bona Craft oil. Silane primer composition ex. 3.45:

94 parts of the product from ex. 3.42 was mixed with 5 parts of 3- aminopropyltrimethoxysilane and 1 part of 1 ,8-Diazabicyclo[5.4.0]undec-7- ene (DBU). 20g of the resulting mixture was mixed with 80g of Bona Craft oil. Silane primer composition ex. 3.46:

94 parts of the product from Ex 3.42 was mixed with 5 parts of 3- aminopropyltrimethoxysilane and 1 part of 1 ,8-Diazabicyclo[5.4.0]undec-7- ene (DBU). 10g of the resulting mixture was mixed with 90g of Bona Craft oil. Coating composition, procedure:

Any of the above mentioned silane primer compositions 3.43-3.46 was applied on an oak panel, (6.7 x 33.5 cm) using a brush and buffed into the wood using a rag. The panel was left under ambient condition for 1 -4 days, then one layer of waterborne topcoat (Bona Traffic) was applied by roller. After 1 week at ambient condition the panel was inspected. All panels showed a warm colour (solvent borne coating look) and good adhesion of the coating composition system.

Viscosity control:

Novel formulations, analogous to ex 3.14 to 3.41 and ex 3.43 to 3.46 can be prepared with various viscosities with the aid of reactive diluents such as 3-(trimethoxysilyl)propylamine, 3-(triethoxysilyl)propylamine, a drying oil or inert solvents such as dipropyleneglycol dimethyl ether.

Cure control:

The polymerization time of the formulations, ex 3.14 to 3.41 and ex 3.43 to ex 3.46 can be modified by the addition, of various amounts, of catalytic agents, such as 3-(trimethoxysilyl)propylamine, 3- (triethoxysilyl)propylamine, 1 ,8-diazabicyclo(5.4.0)undec-7-ene (DBU). Amine catalysts can be made less corrosive, but still catalytically active, by complete or partial neutralization with e.g., methacrylic acid, octanoic acid, bis(2- ethylhexyl)phosphate, or Rhodafac RS-410 (Rhodia).

Claims

1 . A coating composition system for treating articles, comprising at least a first and at least a second composition, characterized by

2. The coating composition system according to claim 1 , wherein said silane containing component is a silane containing oligomer and/or polymer, preferably

i. an adduct of at least one isocyanatosilane, and at least one

compound selected from the group hydroxy-functional compound, amino-functional compound and aminohydroxy-functional compound, or derivative thereof;

3. The coating composition system according to claim 2, wherein said isocyanatosilane is an isocyanatoalkyl-(alkyl)alkoxysilane; preferably selected from isocyanatoalkyl-alkyldialkoxysilane and/or isocyanatoalkyl- trialkoxysilane.

4. The coating composition system according to claim 2 or 3, wherein said isocyanatosilane contains alkoxysiloxy groups attached to the silicone atom of the isocyanatoalkyl-(alkyl)alkoxysilane.

5. The coating composition system according to claim 3 or 4, wherein said alkoxy group of the isocyanatoalkyl-(alkyl)alkoxysilane is selected from the group methoxy, ethoxy, propoxy, butoxy, pentoxy, ethylenedioxy, 1 ,2- propylenedioxy, 1 ,3-propylenedioxy, substituted 1 ,3-propylenedioxy, such as 2-methyl-1 ,3-propylenedioxy, or 2,2-dimethyl-1 ,3-propylenedioxy,

ethoxyethoxy, and any combination thereof; preferably selected from methoxy, ethoxy, and any combination thereof.

6. The coating composition system according to any one of claims 3-5, wherein said alkyl groups of the isocyanatoalkyl-(alkyl)alkoxysilane may be the same or different, and selected from the group linear or branched alkylene chains having 1 -4 carbon atoms; preferably selected from the group methyl, ethyl and propyl, and any combination thereof.

7. The coating composition system according to any one of claims 3-6, wherein said isocyanatoalkyl-(alkyl)alkoxysilane is selected from the group 3- isocyanatopropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, 2- isocyanatoethyltrimethoxysilane, 4-isocyanatobutyltrimethoxysilane, isocyanatomethyltrimethoxysilane, isocyanatomethyltriethoxysilane, isocyanatomethyltriisopropoxysilane, 3- isocyanatopropylmethyldimethoxysilane, 3-isocyanatopropylmethyl

diethoxysilane, 4-isocyanatobutylmethyldimethoxysilane,

isocyanatomethylmethyldimethoxysilane,

isocyanatomethylmethyldiethoxysilane, and any combination thereof;

preferably selected from the group 3-isocyanatopropyltrialkoxysilanes; more particularly 3-isocyanatopropyltrimethoxysilane, 3- isocyanatopropyltriethoxysilane, isocyanotomethyltrimethoxysilane, isocyanatomethyltriethoxysilane, and any combination thereof.

8. The coating composition system according to any one of claims 1 -7, wherein the silane containing component is present in the first coating composition in an amount of about 10 to 100 wt%, preferably 25-100 wt%, 30- 100 wt%, 40-100 wt%, 50-100 wt%, 60-100 wt%, 70-100 wt%, 80-100 wt%, 90-100 wt%, 10-90 wt%, or 10-80 wt% based on the first coating composition.

9. The coating composition system according to any one of claims 2-8, wherein said at least one hydroxy-functional compound is selected from the group monoalcohols, polyols, hydroxyl group-containing polymers, and any combination thereof;

preferably the monoalcohols are selected from the group consisting of methanol, ethanol, propanol, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, propylene glycol 1 -methyl ether, propylene glycol 2-methyl ether, propylene glycol 1 -ethyl ether, and propylene glycol 1 -butyl ether;

and/or the polyols are selected from the group consisting of ethylene glycol, diethylene glycol, oligoethylene glycols, propylene glycol, dipropylene glycol, oligopropylene glycols, butylene glycol, penthylene glycol, hexylene glycols, decanediol, dodecanediol, neopentylic polyols such as neopentyl glycol, hydroxypivalyl hydroxyopivalate, 2-butyl-2-ethylpropanediol, 2-methyl-1 ,3- propanediol, dimer fatty alcohols, cyclohexane dimethanol, pentaspiroglycol, tricyclodecane dimethanol, trimethylpentanediol, 3-methyl-1 ,5-pentanediol, trimethylolethane, timethylolpropane, fatty acid polyols such as ricinoleic acid derivatives, epoxidized oil polyol derivatives, glycerol, pentaerythritol, dipolyols such as dineopentylglycol, ditrimethylolpropane, dipentaerythritol, 2,2,6,6-tetrakis(hydroxymethyl)cyclohexane-1 -ol, alkoxylated neopentyl polyols such as ethoxylated or propoxylated neopentylglycol,

trimethylolpropane, pentaerythritol, ditrimethylolpropane, and

dipentaerythritol; and/or the hydroxyl-group functional polymers are selected from the group consisting of polyesterpolyols having a molecular weight of about 300-1500 g/mol from above mentioned polyols and dicarboxylic acids such as succinic acid, adipic acid, sebacic acid, phthalic acid, isophtalic acid, terephtalic acid, dimer fatty acids or carboxylic acid anhydrides such as phthalic anhydride or succinic anhydride or esters of mentioned carboxylic acids, polylactone polyols such as polycaprolactone, polyether polyols such as polyethylene oxide, polypropylene oxide, polytetrahydrofurane or copolyether polyols such as copoly(ethyleneoxide propyleneoxide), poly(meth)acrylates, polycarbonate polyols, epoxy resins, cellulose

derivatives, FEVE (Fluoroethylene-Alkyl Vinyl Ether), alkyds, polyurethane polyols, and any combination thereof.

10. The coating composition system according to any one of claims 2-9, wherein said at least one amino-functional compound is selected from the group of monoamines, polyamines, amine group-containing polymers, and any combination thereof; preferably the monoamines are selected from monofunctional branched or linear amines or mixtures thereof having 1 to 50 carbon atoms, and/or the polyamines are selected from difunctional, trifunctional, and tetrafunctional, respectively, branched or linear amines or mixtures thereof having 1 to 50 carbon atoms.

1 1 . The coating composition system according to claims 10, wherein the monoamines are selected from the group consisting of 2-ethylhexylamine, butylamine, di-(2-ethylhexyl)amine, dibutylamine, dicyclohexylamine, diethylamine, dimethylamine, dipropylamine, ditridecyamine, ethylamine, isopropylamine. N-ethyl-N-propylamine, N-methyl-N-isopropylamine, N- octylamine, propylamine, tert-butylamine, tridecylamine, 2- methoxyethylamine, 3-methoxypropylamine, di-(2-methoxyethyl)amine, alkylated polyether amines, and any combination thereof; and/or

polyamines are selected from the group consisting of 1 ,2-propylenediamine, 1 ,3-diaminopropane, 3-(cyclohexylamino)propylamine, 3,3'-dimethyl-4,4'- diaminodicyclohexylmethane, 4,4'-diaminodicyclohexylmethane,

ethylenediamine, isophorondiamine, 2-methyl-1 ,5-pentanediamine, 2,2- dimethylpropnae-1 ,3-diamine, octamethylenediamine, butandiamine, hexamethylenediamine, piperazin, diethylenetriamine, dipropylenetriamine, N,N-bis-(3-aminopropyl)methylamine, 3-(2-aminoethylamino)propylamine, N'N'-bis-(3-aminopropyl)ethylenediamine, 4,7, 10-trioxatridecan-1 ,13-diamine, 4,9-dioxadodecane-1 ,12-diamine, cycloaliphatic bis(secondary amine), Jefflink 754 (Huntsman), polyoxyethylenediamines, polyoxypropylene- diamines, polyoxyethylene/polyoxypropylene diamines, PTMEG diamines, Jeffamine D-2000, Jeffamine ED-900, Jeffamine ED-2003, the products from the reaction of polyamines and Michael acceptors such as diethyl maleate, dibutyl maleate or Bis(2-ethylhexyl) maleate, i.e. the reaction of Jeffamine and maleate, polyaspartic esters such as Desmophen NH2850, and any combination thereof.

12. The coating composition system according to any one of claims 2-1 1 , wherein the at least one aminohydroxy-functional compound is selected from the group of polyetheramines; preferably polyoxyethylenemonoamines, polyoxypropylenemonoamines, polyoxyethylene/polyoxypropylene

monoamines; PTMEG monoamines; diethanolamine; monoethanolamine; diisopropanolamine; isopropanolamine; butylethanolamine;

ethylethanolamine; 2-(2-aminoethoxy)ethanol; 3-amino-1 -propanol; 5-amino- 1 -pentanol; hydroxyethylpiperazine; N-(2-aminoethyl)ethanolamine; and any combination thereof.

13. The coating composition system according to any one of claims 2-12, wherein the at least one aminosilane may be selected from the group of (alkyl)aminoalkyl(alkyl)alkoxysilanes, preferably selected from

aminoalkylalkoxysilane, an aminoalkylalkylalkoxysilane, an

alkylaminoalkylalkylalkoxysilane, an alkylaminoalkylalkoxysilane;

preferably selected from aminopropyltrialkoxysilanes,

aminomethyltrialkoxysilanes, aminomethylmethyldialkoxysilanes,

aminomethylethyldialkoxysilanes, and any combination thereof; more preferably selected from 3-aminopropyltrimethoxysilane, 3- aminopropyltriethoxysilane, 3-aminopropylmethyldimethoxysilane, 3- aminopropylmethyldiethoxysilane, N-ethyl-3-aminopropyltrimethoxysilane, N- ethyl-3-aminopropyltriethoxysilane, N-ethyl-3- aminopropylmethyldimethoxysilane, N-ethyl-3- aminopropylmethyldiethoxysilane, N-ethyl-3-aminoisobutyltrimethoxysilane, N-ethyl-3-aminoisobutyltriethoxysilane, N-butyl-3-aminopropyltriethoxysilane, N-butyl-3-aminopropyltrimethoxysilane, N-cyclohexyl-3- aminopropyltrimethoxysilane, N-cyclohexyl-3-aminopropyltriethoxysilane, N- cyclohexyl-aminomethyltriethoxysilane, and any combination thereof;

polyaminosilanes, preferably selected from the group of diaminosilanes and/or triaminosilanes, more preferably selected from 2-aminoethyl-3- aminopropylmethyldimethoxysilane, 2-aminoethyl-3-aminopropyltrimethoxy- silane, 2-aminoethyl-3-aminopropyltriethoxysilane, 2-aminoethyl-3-amino- propylmethyldimethoxysilane, 2-(2-aminoethyl)aminoethylpropyltrimethoxy- silane;

bis((alkyl)alkoxysilylalkyl)amines, preferably bis(3-triethoxysilylpropyl)amine and/or bis(3-trimethoxysilylpropyl)amine;

aminosilanes being an adduct from the reaction of one or more aminosilanes with a Michaelacceptor, preferably selected from diethyl maleate, dibutyl maleate, Bis-(2-ethylhexyl) maleate, and any combination thereof;

and any combination thereof.

14. The coating composition system according to any one of claims 2-13, wherein the isocyanatofunctional compound is selected from the group of polyisocyanates, polymers of polyisocyanates and polyols, and any combination thereof; preferably selected from the group of hexamethylene- 1 ,6-diisocyanate, isophorone diisocyanate, dicyclohexylmethane

diisocyanate, 1 ,4-cyclohexane diisocyanate, oligomers of the mentioned diisocyanates such as Desmodur N3900 from Bayer, Easaqua L 600 from Vencorex, Tolunate XFlo (a biobased aliphatic polyisocyanate from

Vencorex,) polymers from the reaction of mentioned polyisocyanates with low molecular weight polyols or polymeric polyols such as polyether polyols, polyester polyols, polycarbonate polyols.

15. The coating composition system according to any one of claims 2-14, wherein the acrylate-functional compound is selected from the group polyether acrylate/methacrylate, such as polyethylenglycol diacrylate, polypropyleneglycol diacrylate, ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, ethoxylated pentaerythritol tetraacrylate, propoxylated pentaerythritol tetraacrylate, ethoxylated glycerol triacrylate, propoxylated glycerol triacrylate, ethoxylated neopentylglycol diacrylate, propoxylated neopentylglycol diacrylate, ethoxylated bisphenol diacrylate, propoxylated bisphenol diacrylate, amine-modified polyether acrylate, polyester acrylate, epoxy acrylate, urethane acrylate, and any combination thereof.

16. The coating composition system according to any one of claims 1 -15, wherein the first coating composition further comprises at least one catalyst; preferably selected from the group consisting of tin containing compounds, titanium containing compounds, bismuth containing compounds, organic carboxylic acids having a melting point above 60^°, amines or salts thereof, and tetraalkylammonium carboxylates.

17. The coating composition system according to any one of claims 1 -16, wherein the the additional low molecular weight silane components are present in the first coating composition in an amount of about 1 -40 wt%, preferably 5 to 30 wt%, preferably 10 to 20 wt%, based on the weight of the first coating composition.

18. The coating composition system according to any one of claims 1 -17, wherein said waterborne dispersion comprises polymers selected from the group consisting of polyurethanes, polyacrylates, polyurethane-acrylate hybrids, and any combination thereof; preferably the polyurethanes are based on aliphatic and/or aromatic isocyanates, and the acrylates are selected from the group consisting of poly(meth)acrylates including copolymers of vinyls and/or styrene, and any combination thereof.

19. The coating composition system according to any one of claims 1 -18, wherein said crosslinker comprises a compound selected from the group consisting of isocyanate containing compound, aziridine containing

compound, carbodiimide containing compound; preferably compounds selected from the group polyisocyanate, polyaziridine, polycarbodiimide, and any combination thereof; preferably compounds selected from the group hydrophilic, aliphatic polyisocyanate, hydrophilic polyaziridine, hydrophilic polycarbodiimide, and any combination thereof.

20. The coating composition system according to any one of claims 1 -19, wherein the first coating composition further comprises a non-reactive diluent; preferably the diluent is selected from the group of viscosity reducing compounds.

21 . A method for treating articles, preferably selected from the group consisting of cellulosic articles, comprising:

providing at least one article;

applying on said article, in a sequential manner, at least a first and at least a second coating composition to provide a coating composition system according to any one of claims 1 -20.

22. The method according to claim 21 , wherein said cellulosic article is selected from the group consisting of wood, bamboo, cork, paperboard, fiberboard, paper, and any combination thereof.

23. The method according to claim 21 or 22, wherein a further treatment is applied to the article before application of said first coating composition and, if present, after said pretreatment of water popping, which treatment is selected from the group consisting of oil treating; coating with solventborne or waterborne lacquers, such as UV curing coatings; polishing; and waxing.

24. Kit of parts, said kit comprising at least a first and a second coating composition, characterized by

25. Use of a coating composition system according to any one of claims 1 -20, or a kit of parts according to claim 24, for treatment of articles selected from the group consisting of cellulosic articles.

26. Use of a coating composition system according to any one of claims 1 -20, for fire resistant flooring, spot repair, and intercoat adhesion promotion.

27. Cellulosic article provided with a coating composition system according to any one of claims 1 -20, or treated by a method according to any one of claims 21 -23.