WO2011124759A1 - Method for manufacturing paint or varnish - Google Patents

Method for manufacturing paint or varnish Download PDF

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Publication number
WO2011124759A1
WO2011124759A1 PCT/FI2011/050292 FI2011050292W WO2011124759A1 WO 2011124759 A1 WO2011124759 A1 WO 2011124759A1 FI 2011050292 W FI2011050292 W FI 2011050292W WO 2011124759 A1 WO2011124759 A1 WO 2011124759A1
Authority
WO
WIPO (PCT)
Prior art keywords
varnish
nanoparticles
paint
composition
added
Prior art date
Application number
PCT/FI2011/050292
Other languages
French (fr)
Inventor
Saila JÄMSÄ
Kirsi Kataja
Soili Takala
Kaisa Putkisto
Pertti VASTAMÄKI
Henrik Dyhr
Original Assignee
Teknologian Tutkimuskeskus Vtt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teknologian Tutkimuskeskus Vtt filed Critical Teknologian Tutkimuskeskus Vtt
Publication of WO2011124759A1 publication Critical patent/WO2011124759A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/80—Processes for incorporating ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose

Definitions

  • the present invention relates to a method for manufacturing paint or varnish
  • nanoparticles improve the properties of products, for instance paints and varnishes.
  • dispersing of nanoparticles into varnish or paint has been problematic, it has not been possible to fully exploit the advantages which nanoparticles have offered to coatings.
  • nanoparticles When nanoparticles are added into a coating, they must be mixed into it in such a way that they do not form aggregates. Furthermore, they should remain as separate particles even during the coating process and the settling (drying) of the coating.
  • Nanoparticles are added into coatings in order to improve e.g. resistance to wear and to scratching, as well as as a UV shield (to protect a varnish surface and/or a coated product). In most cases, inorganic nanoparticles are used. To allow the nanoparticles to function as desired, they must often be added in relatively large amounts into the coating
  • NFC nanofibrillated cellulose
  • the nanoparticles are first mixed into the nanocellulose. (It is possible to carry out the addition by means of e.g. mechanical, ultrasound-assisted or another suitable mixing.) This mixture is added into the paint or varnish composition.
  • This mixture is added into the paint or varnish composition.
  • the result is a coating in which the particles and/or nanoparticles are evenly distributed throughout the matrix already with small amounts of nanocellulose: even as only 0.1 % of the amount of the dry matter of the binder/coating.
  • good results have been achieved with amounts of nanocellulose of 0.5-5 % of the dry matter of the coating, and it is possible to achieve a good result even with a mixture portion of only 0.1 percent.
  • the result is a composition in which the particles and/or nanoparticles are evenly distributed throughout the matrix at small nanocellulose amounts: the amount varying between 0.2 and 2.0 % of the amount of the binder.
  • One preferred way of manufacturing the composition is to first mix the particles and/or the nanoparticles into an aqueous cellulose gel which is at least partly fibrillated into nanofibrils, which aqueous gel is then added into the paint or varnish composition. Due to this nanofibrillated cellulose carrier, the particles remain evenly distributed throughout the composition of the paint/varnish etc. for a sufficient period of time for the coating process.
  • the nanoparticles remain mixed in the matrix of varnish or paint, and no aggregates are formed during or after the mixing. Over time, the nanoparticles may separate from the mixture, but light shaking evenly redistributes them again throughout the composition of paint or varnish. Thus, it is unnecessary for the nanoparticles to be permanently adhered to the nanocellulose, which is a substantial advantage. Small amounts of NFC are not detrimental to the viscosity of the coating composition.
  • the application potential is wide for wood and metal coatings, plastics and textiles, intended for use both outdoors and indoors. The wear and scratch resistance of the coatings are important properties, among others, in wooden floors, electrical displays and coatings of the automotive industry, and in many other consumer products. Inorganic UV shields are used, among others, in suntan lotions and varnishes.

Abstract

With different nanoparticles, new properties are generated in coatings. Using the nanoparticles, it is possible to improve the resistance of products to wear and scratching, the UV resistance, the conductivity and other properties. However, it is difficult to evenly distribute the nanoparticles in the composition of paint or varnish, and, as a result, the desired properties are not always achieved, or the nanoparticles must be added in amounts that are economically unprofitable to achieve the desired properties. In the present invention, the nanoparticles are first added by mechanical mixing into a cellulose gel, which is fibrillated partly into nanofibrils, which aqueous gel is then added into the composition of paint or varnish. Due to this nanofibrillated cellulose carrier, the particles remain evenly distributed throughout the coating materials and other similar materials, such as the binder of the paint or varnish, for a sufficient period of time for the coating process.

Description

Method for manufacturing paint or varnish
The present invention relates to a method for manufacturing paint or varnish
according to the preamble of Claim 1.
It is well known that nanoparticles improve the properties of products, for instance paints and varnishes. In cases where the dispersing of nanoparticles into varnish or paint has been problematic, it has not been possible to fully exploit the advantages which nanoparticles have offered to coatings. When nanoparticles are added into a coating, they must be mixed into it in such a way that they do not form aggregates. Furthermore, they should remain as separate particles even during the coating process and the settling (drying) of the coating.
Nanoparticles are added into coatings in order to improve e.g. resistance to wear and to scratching, as well as as a UV shield (to protect a varnish surface and/or a coated product). In most cases, inorganic nanoparticles are used. To allow the nanoparticles to function as desired, they must often be added in relatively large amounts into the coating
(paint/varnish). In this case, there is an increased risk that the particles aggregate or separate and drop to the bottom of the coating, and thus fail to achieve the desired effect. In the present invention, a material has been found as well as a mixing method by means of which it is possible to distribute the nanoparticles evenly throughout the varnish or paint.
The present invention is characterized by what is stated in the claims. In the present invention, nanofibrillated cellulose (NFC) has been used as a carrier of the particles and or nanoparticles in the paint or the varnish.
In the method according to the present invention, the nanoparticles are first mixed into the nanocellulose. (It is possible to carry out the addition by means of e.g. mechanical, ultrasound-assisted or another suitable mixing.) This mixture is added into the paint or varnish composition. The result is a coating in which the particles and/or nanoparticles are evenly distributed throughout the matrix already with small amounts of nanocellulose: even as only 0.1 % of the amount of the dry matter of the binder/coating. In tests, good results have been achieved with amounts of nanocellulose of 0.5-5 % of the dry matter of the coating, and it is possible to achieve a good result even with a mixture portion of only 0.1 percent. Also such tests have been carried out in which the result is a composition in which the particles and/or nanoparticles are evenly distributed throughout the matrix at small nanocellulose amounts: the amount varying between 0.2 and 2.0 % of the amount of the binder.
One preferred way of manufacturing the composition is to first mix the particles and/or the nanoparticles into an aqueous cellulose gel which is at least partly fibrillated into nanofibrils, which aqueous gel is then added into the paint or varnish composition. Due to this nanofibrillated cellulose carrier, the particles remain evenly distributed throughout the composition of the paint/varnish etc. for a sufficient period of time for the coating process.
The present invention has been verified by the Taber Abrasion Test, the results of which are shown in Figure 1. In the tests, silica-modified nanoparticles or a mixture of nanofibrillated cellulose and silica-modified nanoparticles were added into the coating composition. The percentage of the nanoparticles of the total dry matter was kept constant (10 %), and the portion of the nanofibrillated cellulose was varied. Leneta films were treated with the mixtures. Wear resistance improves with increasing amounts of NFC. Further, different applied amounts must be taken into account. In each case, the amount applied is the same, 150 g/m2 wet varnish + nanoparticles (0 sample) or varnish + nanoparticles + NFC. When the dry matter is taken into account in practice, the amount applied is substantially smaller in the NFC samples than in the sample of only varnish + nanoparticles, and the wear resistance still improves.
Advantages of the method according to the present invention are, among others, that the nanoparticles remain mixed in the matrix of varnish or paint, and no aggregates are formed during or after the mixing. Over time, the nanoparticles may separate from the mixture, but light shaking evenly redistributes them again throughout the composition of paint or varnish. Thus, it is unnecessary for the nanoparticles to be permanently adhered to the nanocellulose, which is a substantial advantage. Small amounts of NFC are not detrimental to the viscosity of the coating composition. The application potential is wide for wood and metal coatings, plastics and textiles, intended for use both outdoors and indoors. The wear and scratch resistance of the coatings are important properties, among others, in wooden floors, electrical displays and coatings of the automotive industry, and in many other consumer products. Inorganic UV shields are used, among others, in suntan lotions and varnishes.
The embodiments of the present invention may vary widely, within the limits of the set of claims.

Claims

1. A method for manufacturing paint or varnish, characterized in that
nanofibrillated cellulose is used in the manufacture as a carrier of the particles and/or nanoparticles of the paint or varnish.
2. The method for manufacturing paint or varnish of Claim 1, characterized in that the nanoparticles are first mixed into the nanocellulose and this mixture is then added into the composition of paint or varnish in such a way that a composition is obtained, in which the particles and/or nanoparticles are evenly distributed throughout the matrix, even with essentially small amounts of nanocellulose, the amount being 0.05 to 5.0 % of the amount of dry matter.
3. The method for manufacturing paint or varnish of Claim 1, characterized in that the nanoparticles are first added by mechanical mixing into the nanocellulose and the mixture is added into the composition of paint or varnish in such a way that a composition is obtained, in which the particles and/or nanoparticles are evenly distributed throughout the matrix already at essentially small amounts of nanocellulose, the amount varying between 0.2 and 2.0 % of the amount of dry matter.
4. The method for manufacturing paint or varnish of any of the Claims 1-3,
characterized in that the particles and/or nanoparticles are first added by mechanical mixing into an aqueous fibrillated cellulose gel, at least to the point where it forms nanofibrils, which aqueous gel is then added into the composition of paint or varnish, whereby, due to this nanofibrillated cellulose carrier, the particles remain evenly distributed throughout the composition of paint/varnish etc. for a sufficient period of time for the coating process.
PCT/FI2011/050292 2010-04-07 2011-04-05 Method for manufacturing paint or varnish WO2011124759A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20105350 2010-04-07
FI20105350A FI123869B (en) 2010-04-07 2010-04-07 Process for producing paint or varnish

Publications (1)

Publication Number Publication Date
WO2011124759A1 true WO2011124759A1 (en) 2011-10-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2011/050292 WO2011124759A1 (en) 2010-04-07 2011-04-05 Method for manufacturing paint or varnish

Country Status (2)

Country Link
FI (1) FI123869B (en)
WO (1) WO2011124759A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014077084A (en) * 2012-10-11 2014-05-01 Toppan Printing Co Ltd Non-adsorptive coating agent and laminate having non-adsorption layer
US9222174B2 (en) 2013-07-03 2015-12-29 Nanohibitor Technology Inc. Corrosion inhibitor comprising cellulose nanocrystals and cellulose nanocrystals in combination with a corrosion inhibitor
US9359678B2 (en) 2012-07-04 2016-06-07 Nanohibitor Technology Inc. Use of charged cellulose nanocrystals for corrosion inhibition and a corrosion inhibiting composition comprising the same
FR3040641A1 (en) * 2015-09-07 2017-03-10 Nof Metal Coatings Europe METHOD FOR APPLYING ANTI-CORROSION COATING TO A METALLIC PART, AQUEOUS COATING COMPOSITION, ANTI-CORROSIVE COATING OF METALLIC PARTS, AND COATED METAL PIECE
US20230121933A1 (en) * 2020-03-17 2023-04-20 Hitachi Energy Switzerland Ag Mfc in pressboards for hv devices

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378381A (en) * 1980-10-31 1983-03-29 International Telephone And Telegraph Corporation Suspensions containing microfibrillated cellulose
US20050256262A1 (en) * 2004-03-08 2005-11-17 Alain Hill Coating or composite moulding or mastic composition comprising additives based on cellulose microfibrils
EP2236664A1 (en) * 2009-03-30 2010-10-06 Omya Development AG Process for the production of nano-fibrillar cellulose suspensions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378381A (en) * 1980-10-31 1983-03-29 International Telephone And Telegraph Corporation Suspensions containing microfibrillated cellulose
US20050256262A1 (en) * 2004-03-08 2005-11-17 Alain Hill Coating or composite moulding or mastic composition comprising additives based on cellulose microfibrils
EP2236664A1 (en) * 2009-03-30 2010-10-06 Omya Development AG Process for the production of nano-fibrillar cellulose suspensions

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9359678B2 (en) 2012-07-04 2016-06-07 Nanohibitor Technology Inc. Use of charged cellulose nanocrystals for corrosion inhibition and a corrosion inhibiting composition comprising the same
JP2014077084A (en) * 2012-10-11 2014-05-01 Toppan Printing Co Ltd Non-adsorptive coating agent and laminate having non-adsorption layer
US9222174B2 (en) 2013-07-03 2015-12-29 Nanohibitor Technology Inc. Corrosion inhibitor comprising cellulose nanocrystals and cellulose nanocrystals in combination with a corrosion inhibitor
FR3040641A1 (en) * 2015-09-07 2017-03-10 Nof Metal Coatings Europe METHOD FOR APPLYING ANTI-CORROSION COATING TO A METALLIC PART, AQUEOUS COATING COMPOSITION, ANTI-CORROSIVE COATING OF METALLIC PARTS, AND COATED METAL PIECE
WO2017042483A1 (en) * 2015-09-07 2017-03-16 Nof Metal Coatings Europe Method for applying a corrosion-resistant coating to a metal part, aqueous coating composition, corrosion-resistant coating for metal parts and coated metal part
CN108430650A (en) * 2015-09-07 2018-08-21 欧洲Nof金属涂层公司 Apply method, aquifer coating composition, the corrosion-resistant finishes of metal parts and the coated metal parts of corrosion-resistant finishes to metal parts
US20190224715A1 (en) * 2015-09-07 2019-07-25 Nof Metal Coatings Europe Method for applying a corrosion-resistant coating to a metal part, aqueous coating composition, corrosion-resistant coating for metal parts and coated metal part
US20230121933A1 (en) * 2020-03-17 2023-04-20 Hitachi Energy Switzerland Ag Mfc in pressboards for hv devices
US11769608B2 (en) * 2020-03-17 2023-09-26 Hitachi Energy Switzerland Ag MFC in pressboards for HV devices

Also Published As

Publication number Publication date
FI20105350A (en) 2011-10-08
FI20105350A0 (en) 2010-04-07
FI123869B (en) 2013-11-29

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