CN104448205B - A kind of aqueous polyurethane, its preparation method and its application for finishing agent - Google Patents

A kind of aqueous polyurethane, its preparation method and its application for finishing agent Download PDF

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CN104448205B
CN104448205B CN201410815705.9A CN201410815705A CN104448205B CN 104448205 B CN104448205 B CN 104448205B CN 201410815705 A CN201410815705 A CN 201410815705A CN 104448205 B CN104448205 B CN 104448205B
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aqueous polyurethane
organosilicon
dihydroxylic alcohols
present
oxirane
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CN104448205A (en
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赵旭忠
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SICHUAN DOWELL TECHNOLOGY CO LTD
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SICHUAN DOWELL TECHNOLOGY CO LTD
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    • C08G18/00Polymeric products of isocyanates or isothiocyanates
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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Abstract

It is the glycol modified aqueous polyurethane of organosilicon the invention provides a kind of aqueous polyurethane, the organosilicon dihydroxylic alcohols has structure shown in Formulas I, in Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;R3And R4Independently selected from H or methyl;N, p and q are the degree of polymerization, independently are 10~100;The organosilicon dihydroxylic alcohols structure includes that mol ratio is (2~4):1 expoxy propane and oxirane.In the present invention, structure is included that mol ratio is (2~4):1 expoxy propane and the organosilicon dihydroxylic alcohols of oxirane are modified to polyurethane, so that organosilicon composition has certain incompatibility with other polyurethane components, organosilicon composition is enriched in film formation surface in film forming procedure, form homogeneous opaque film, so that still covering performance with preferable without the outer doping of addition when the aqueous polyurethane that the present invention is provided is used as finishing agent.

Description

A kind of aqueous polyurethane, its preparation method and its application for finishing agent
Technical field
The present invention relates to technical field of coatings, more particularly to a kind of aqueous polyurethane, its preparation method and its for covering with paint, lacquer, colour wash, etc. The application of agent.
Background technology
The effect covered with paint, lacquer, colour wash, etc. in tanning production is very big, can significantly improve the quality and class of leather, increases leather Kind and commercial value, are last one " lifelines " in tanning production.Finishing agent is used for leather surface beautification, improves durable Property, corrected grain defect, improve commercial value, while the assorted slurries increased varieties and designs.In leather finish production process, The covering with paint of second layer leather is essential important procedure.For first layer leather, the production cost of second layer leather is relatively low, warp Ji benefit is preferable.But second layer leather does not have grain tissue, its mechanical property is poor, and the disability on scytoblastema surface is more, and this is required In the covering with paint of second layer leather, finishing agent used must have preferable disability to cover performance.
Aqueous emulsion of polyurethane is used as leather finishing agent, and its filming performance is good, is firmly bonded, and coating has high glaze, height resistance to Mill property, high resiliency, water-fast, weather-proof, cold-resistant, heat-resisting, chemical-resistant resistance.It is the resultant Leather good hand feeling of covering with paint, comfortable, can carry significantly The class of resultant Leather high.It is nontoxic when using, pollution-free, do not burn simultaneously as with water as medium, therefore, it is a kind of environment friend Good product, develops very rapid this year.
In the prior art, general aqueous polyurethane film forming is transparent, therefore to the covering poor-performing of scytoblastema disability.For Solve the outer filled covering to improve to scytoblastema disability of addition in this problem prior art general hydrotropism's polyurethane Property, but these outer addition filler generally existing compounding stability and problems of stability in storage.
The content of the invention
It is an object of the invention to provide a kind of aqueous polyurethane, its preparation method and its application for finishing agent, this When the aqueous polyurethane for inventing offer is used as finishing agent, without adding outer doping, still with preferably covering performance, Also would not there is a problem of due to the compounding stability and storage stability that outer doping brings.
It is the glycol modified aqueous polyurethane of organosilicon, the organosilicon the invention provides a kind of aqueous polyurethane Dihydroxylic alcohols has structure shown in Formulas I:
In Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;
R3And R4Independently selected from H or methyl;
N, p and q are the degree of polymerization, independently are 10~100;
The organosilicon dihydroxylic alcohols structure includes expoxy propane and oxirane, the expoxy propane and oxirane Mol ratio is (2~4):1.
Preferably, R1And R2Independently selected from the alkyl that H or carbon number are 1~3.
Preferably, described n, p and q independently are 20~80.
Preferably, the preparation method of the organosilicon dihydroxylic alcohols is comprised the following steps:
The polyethers that the polysiloxanes that double hydrogen are blocked is blocked with monoene alkyl is reacted in the presence of catalyst, is obtained Organosilicon dihydroxylic alcohols;
The mono-vinyl end capped polyether monomer includes expoxy propane and oxirane, the expoxy propane and epoxy second The mol ratio of alkane is (2~4):1.
Preferably, the temperature of the polysiloxanes of described pair of hydrogen end-blocking and the polyether reactant of monoene alkyl end-blocking for 90 DEG C~ 100℃;
The described pair of polysiloxanes of hydrogen end-blocking and the time of the polyether reactant of monoene alkyl end-blocking are 4h~6h.
Preferably, the catalyst is platinum metal catalyst;
The consumption of the catalyst is 1ppm~10ppm.
The invention provides a kind of preparation method of aqueous polyurethane, comprise the following steps:
A) in the presence of catalyst, by organosilicon dihydroxylic alcohols, aliphatic isocyanates, polyalcohol with Formulas I structure Prepolymerization reaction is carried out with anionic hydrophilic monomer chain extender, performed polymer is obtained, the aliphatic isocyanates at least include one kind Diisocyanate;
B) neutralization reaction will be carried out with neutralization reagent after the performed polymer viscosity reduction, obtains neutralization reaction product;
C) after the neutralization reaction product is mixed with water, emulsion chain extension is carried out, obtains aqueous polyurethane;
In Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;
R3And R4Independently selected from H or methyl;
N, p and q are the degree of polymerization, independently are 10~100;
The organosilicon dihydroxylic alcohols structure includes expoxy propane and oxirane, the expoxy propane and oxirane Mol ratio is (2~4):1.
Preferably, the temperature of the prepolymerization reaction is 70 DEG C~100 DEG C
Preferably, the time of the prepolymerization reaction is 2h~5h.
The invention provides the application that aqueous polyurethane is used for finishing agent, the aqueous polyurethane is above-mentioned technical proposal institute The aqueous polyurethane that preparation method described in stating aqueous polyurethane or above-mentioned technical proposal is obtained.
It is the glycol modified aqueous polyurethane of organosilicon, the organosilicon the invention provides a kind of aqueous polyurethane Dihydroxylic alcohols has structure shown in Formulas I, in Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;R3And R4It is independent Ground is selected from H or methyl;N, p and q are the degree of polymerization, independently are 10~100;The organosilicon dihydroxylic alcohols structure includes epoxy third Alkane and oxirane, the expoxy propane are (2~4) with the mol ratio of oxirane:1.In the present invention, by organosilicon binary Alcohol is modified to polyurethane, and the structure of the organosilicon dihydroxylic alcohols includes that mol ratio is (2~4):1 expoxy propane and ring Oxidative ethane so that the polarity of organosilicon dihydroxylic alcohols there occurs change, so as in making the glycol modified polyurethane of organosilicon for obtaining There is certain molecular-chain polarr difference in organosilicon composition, have certain incompatibility, in film forming mistake with other polyurethane components Produced in journey and be slightly separated, organosilicon composition is enriched in film formation surface, so as to form homogeneous opaque film so that the present invention Outer doping need not be added when the aqueous polyurethane of offer is used as finishing agent, still with preferably covering performance and comfortably Feel, so as to would not also there is the poor storage stability feel and compounding stability that outer doping brings.
And the aqueous polyurethane film caudacoria that the present invention is provided has preferable mechanical property.The embodiment of the present invention 4 The tensile strength of the aqueous polyurethane for arriving point reagent film forming caudacoria is 17Mpa, and elongation at break is 560%.
Specific embodiment
It is the glycol modified aqueous polyurethane of organosilicon, the organosilicon the invention provides a kind of aqueous polyurethane Dihydroxylic alcohols has structure shown in Formulas I:
In Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;
R3And R4Independently selected from H or methyl;
N, p and q are the degree of polymerization, independently are 10~100;
The organosilicon dihydroxylic alcohols structure includes expoxy propane and oxirane, the expoxy propane and oxirane Mol ratio is (2~4):1.
In the present invention, organosilicon dihydroxylic alcohols is modified to polyurethane, is wrapped in the structure of the organosilicon dihydroxylic alcohols Mol ratio is included for (2~4):1 expoxy propane and oxirane so that the polarity of organosilicon dihydroxylic alcohols there occurs change, so that In making the glycol modified polyurethane of the organosilicon for obtaining there is certain strand pole in organosilicon composition with other polyurethane components Sex differernce, there is certain incompatibility, is produced in film forming procedure and is slightly separated, and organosilicon composition is enriched in film formation surface, from And forming homogeneous opaque film so that the aqueous polyurethane that the present invention is provided need not add additional when being used as finishing agent Additive, still with performance and comfortable feel is preferably covered, so as to would not also there is the storage that outer doping brings The problem of stability difference feel and compounding stability.And the aqueous polyurethane film caudacoria that the present invention is provided has preferable power Learn performance.
The aqueous polyurethane that the present invention is provided is the glycol modified aqueous polyurethane of organosilicon, the organosilicon dihydroxylic alcohols With structure shown in Formulas I, in Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5, preferably independently it is selected from H, methyl, ethyl, n-propyl or isopropyl;
In Formulas I of the present invention, R3And R4Independently selected from H or methyl.In the present invention, it is described with Formulas I structure Organosilicon dihydroxylic alcohols includes expoxy propane and oxirane, and the expoxy propane is preferably with the mol ratio of the oxirane (2~4):1, more preferably (2.5~3.5):1.
In the present invention, n, p and q are the degree of polymerization, 10~100 independently are, preferably independently for 20~80 is more preferably only It is on the spot 30~60.
In the present invention, the preparation method of the organosilicon dihydroxylic alcohols preferably includes following steps:
The polyethers that the polysiloxanes that double hydrogen are blocked is blocked with monoene alkyl is reacted in the presence of catalyst, is obtained Organosilicon dihydroxylic alcohols;
The mono-vinyl end capped polyether monomer includes expoxy propane and oxirane, the expoxy propane and epoxy second The mol ratio of alkane is (2~4):1.
In the present invention, the polysiloxanes of described pair of hydrogen end-blocking has structure shown in Formula II:
In Formula II, R1And R2It is preferably independently former selected from H or carbon independently selected from the alkyl that H or carbon number are 1~20 Subnumber is 1~20 alkyl, more preferably independently selected from the alkyl that H or carbon number are 1~10, most preferably independently selected from H, Methyl, ethyl, n-propyl or isopropyl.
In the present invention, n is the degree of polymerization, is 10~100, preferably 20~80, more preferably 30~60.Of the invention In embodiment, the number-average molecular weight that the siloxanes that double hydrogen are blocked can be specially Best Co., Ltd's sale is 1000 double hydrogen end-blocking Siloxanes (HPDMS).
In the present invention, the polyethers of the monoene alkyl end-blocking has structure shown in formula III:
In formula III, R5Selected from H or or methyl.In the present invention, it is described with formula III structure but the dilute end-blocking of second poly- Ether includes expoxy propane and oxirane, and the expoxy propane is preferably (2~4) with the mol ratio of the oxirane:1, More preferably (2.5~3.5):1.
In the present invention, p and q is the degree of polymerization, 10~100 independently is, preferably independently for 20~80 is more preferably independent Ground is 30~60.In an embodiment of the present invention, the polyethers of monoene alkyl end-blocking can be specially monoallyl end-blocking polyoxyethylene Dilute-propylene ether, number-average molecular weight is 600, EO and the ratio of PO is 1:2.5.Polyethers of the present invention to monoene alkyl end-blocking Source without special limitation, using the commercial goods of the polyethers of above-mentioned monoene alkyl end-blocking.
In the present invention, the polysiloxanes of double hydrogen end-blocking and the mol ratio of the polyethers of monoene alkyl end-blocking be preferably (1~ 5):(1~5), more preferably (1~4):(1~4).
In the present invention, the polysiloxanes of double hydrogen end-blockings is preferred with the catalyst that the polyether reactant that monoene alkyl is blocked is used Be platinum metal catalyst, in the present invention, the platinum metal catalyst can be specially simple platinum metal catalyst, or The composite catalyst that the load of platinum activated feedstock is obtained on a catalyst support.In an embodiment of the present invention, the platinum Catalyst can be specially chloroplatinic acid catalyst, and the content of platinum is preferably 1000ppm~10000ppm in the chloroplatinic acid catalyst, More preferably 1050ppm~9000ppm, most preferably 3000ppm~8000ppm.In the present invention, the consumption of the catalyst Preferably 1ppm~10ppm, more preferably 3ppm~8ppm.
In the present invention, the polysiloxanes of double hydrogen end-blockings is preferably 90 DEG C with the temperature of the polyether reactant of monoene alkyl end-blocking ~100 DEG C, more preferably 93 DEG C~98 DEG C;In an embodiment of the present invention, the polysiloxanes of double hydrogen end-blockings is sealed with monoene alkyl The temperature of the polyether reactant at end can be specially 90 DEG C, 93 DEG C, 95 DEG C, 98 DEG C or 100 DEG C.In the present invention, described pair of hydrogen end-blocking Time of polyether reactant of polysiloxanes and monoene alkyl end-blocking be preferably 4h~6h, more preferably 4.5h~5.5h;At this In inventive embodiment, polysiloxanes and the time of the polyether reactant of monoene alkyl end-blocking of double hydrogen end-blocking can be specially 4h, 4.25h, 4.5h, 4.75h, 5h, 5.25h, 5.5h, 5.75h or 6h.
After completing the reaction, the product that will preferably obtain of the present invention is washed, remove catalyst therein and Residual monomer.The present invention does not have special limitation to the method for the washing, using washing well known to those skilled in the art Technical scheme, in an embodiment of the present invention, the washing can be specially deionized water washing.
Present invention also offers a kind of preparation method of aqueous polyurethane, comprise the following steps:
A) in the presence of catalyst, by organosilicon dihydroxylic alcohols, aliphatic isocyanates, polyalcohol with Formulas I structure Prepolymerization reaction is carried out with anionic hydrophilic monomer chain extender, performed polymer is obtained, the aliphatic isocyanates at least include one kind Diisocyanate;
B) neutralization reaction will be carried out with neutralization reagent after the performed polymer viscosity reduction, obtains neutralization reaction product;
C) after the neutralization reaction product is mixed with water, emulsion chain extension is carried out, obtains aqueous polyurethane;
In Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;
R3And R4Independently selected from H or methyl;
N, p and q are the degree of polymerization, independently are 10~100;
The organosilicon dihydroxylic alcohols structure includes expoxy propane and oxirane, the expoxy propane and oxirane Mol ratio is (2~4):1.
The present invention in the presence of catalyst, by the organosilicon dihydroxylic alcohols with Formulas I structure, aliphatic diisocyanate, Polyalcohol and anionic hydrophilic monomer chain extender carry out prepolymerization reaction, obtain performed polymer.In the present invention, the organosilicon binary Alcohol is have the organosilicon dihydroxylic alcohols shown in Formulas I described in above-mentioned technical proposal, be will not be repeated here.
In the present invention, the aliphatic isocyanates at least include a kind of diisocyanate, are preferably selected from from different Fo Er Ketone diisocyanate (IPDI) and its derivative, tetramethylene diisocyanate, hexamethylene diisocyanate (HDI) and its spread out Biological, trans- hexamethylene-Isosorbide-5-Nitrae-diisocyanate (TMI), phosphorous diisocyanate, the tetramethoxy butane-isocyanic acid of Isosorbide-5-Nitrae-two Ester, butane-Isosorbide-5-Nitrae-diisocyanate, hexane -1,6- diisocyanate, dicyclohexyl methyl hydride diisocyanate, hexamethylene-Isosorbide-5-Nitrae - Diisocyanate, hexamethylene -1,2- diisocyanate, hexamethylene -1,3- diisocyanate, ethylidene diisocyanate and drop ice One or more in piece alkane diisocyanate.
In the present invention, the polyalcohol is preferably one or more in dihydroxylic alcohols and trihydroxylic alcohol, more preferably polyoxy Change propylene dihydroxylic alcohols, polycaprolactone diols, PCDL, polytetrahydrofuran diol, the equal molecule of polyethylene glycol sum Amount less than 400 dihydroxylic alcohols in one or more.In the present invention, the number-average molecular weight of the Polyoxypropylene diol is excellent Elect 1000~4000, more preferably 1500~3500, most preferably 2000~3000 as;The number of the polycaprolactone diols is equal Molecular weight is preferably 1000~3000, more preferably 1300~2800, most preferably 1600~2000;The makrolon binary The number-average molecular weight of alcohol is preferably 1000~2000, more preferably 1200~1800, most preferably 1400~1600;Described poly- four The number-average molecular weight of hydrogen furans glycol is preferably 500~2000, more preferably 1000~1800, most preferably 1200~1500; The number-average molecular weight of the polyethylene glycol is preferably 500~2000, more preferably 1000~1800, most preferably 1200~ 1500;Dihydroxylic alcohols of the molecular weight less than 400 is preferably ethylene glycol, propane diols, 1,4- butanediols, 1,6-HD, 1,5- One or more in pentanediol, hexylene glycol, diglycol and neopentyl glycol.
In the present invention, the anionic hydrophilic monomer chain extender is preferably dihydroxy methylpropane and/or dihydroxymethyl fourth Alkane.
In the present invention, the organosilicon dihydroxylic alcohols with Formulas I structure, aliphatic isocyanates, polyalcohol and the moon from The catalyst that sub- hydrophilic monomer chain extender is reacted preferably organic tin catalyst, more preferably di lauric dibutyl One or more in tin, stannous octoate, two (dodecyl sulphur) dibutyl tins and dibutyltin diacetate.In the present invention, The consumption of the organic tin catalyst is preferably 10ppm~30ppm, more preferably 15ppm~25ppm.
In the present invention, the mol ratio of the aliphatic isocyanates, organosilicon dihydroxylic alcohols and polyalcohol be preferably (3~ 7):(0.05~0.5):1, more preferably (4~6):(0.1~0.3):1.The polyalcohol and hydrophilic monomer chain extender mole Than being preferably (0.5~3):1, more preferably (1~2):1.The consumption of the hydrophilic monomer chain extender is preferably reaction system and consolidates 2.5wt%~the 8wt%, more preferably 4wt%~6wt% of body part gross mass.
The present invention is preferably by the organosilicon dihydroxylic alcohols, aliphatic isocyanates, polyalcohol, anionic hydrophilic monomer and expansion After chain agent mixing, catalyst is added, the mixed material that will be obtained carries out prepolymerization reaction, obtains performed polymer.In the present invention, institute The temperature for stating prepolymerization reaction is preferably 70 DEG C~100 DEG C, more preferably 75 DEG C~95 DEG C, most preferably 80 DEG C~90 DEG C;It is described The time of prepolymerization reaction is preferably 2h~5h, most preferably more preferably 2.5h~4.5h, 3h~4h.
After obtaining performed polymer, the present invention will carry out neutralization reaction after the performed polymer viscosity reduction with neutralization reagent.In the present invention In, the viscosity reduction is preferably specially:
The performed polymer is mixed with thinner, is carried out with regard to viscosity reduction.
In the present invention, the thinner is preferably acetone, DMF, butanone and 1-METHYLPYRROLIDONE In one or more.In the present invention, the quality of the thinner and all participation reaction monomers gross masses than water 10%~20%, more preferably 12%~18%, most preferably 14%~16%.The temperature of the viscosity reduction is preferably 30 DEG C~55 DEG C, more preferably 35 DEG C~50 DEG C, most preferably 40 DEG C~45 DEG C.
After viscosity reduction, viscosity reduction product and neutralization reagent are carried out neutralization reaction by the present invention, obtain neutralization reaction product.In this hair In bright, the neutralization reagent is preferably aminated compounds, more preferably triethylamine.In the present invention, the neutralization reagent rubs The ratio between molal quantity of that number and dihydromethyl propionic acid is preferably (80~120):100, more preferably (90~115):100, it is optimal Elect as (95~100):100.The temperature of the neutralization reaction is preferably 30 DEG C~50 DEG C, more preferably 35 DEG C~45 DEG C;It is described The time of neutralization reaction is preferably 0.5h~1h, and in an embodiment of the present invention, the time of the neutralization reaction can be specially 0.5h, 0.75h or 1h.
After obtaining neutralization reaction product, after the present invention mixes the neutralization reaction product with water, emulsion chain extension is carried out, obtained To aqueous polyurethane.The present invention does not have special limitation to the species of the water, is using water well known to those skilled in the art Can, such as can be deionized water.Those skilled in the art can be as needed aqueous polyurethane solid content, it is determined that adding water Quality;In an embodiment of the present invention, the water addition preferably so that the aqueous polyurethane for arriving solid content for 20%~ 35%, most preferably 25%~30%.The present invention mixes the neutralization reaction product with water preferably under conditions of stirring; It is preferred that carrying out emulsion chain extension after scattering.In the present invention, the speed of the stirring is preferably 800r/min~1500r/ Min, more preferably 900r/min~1300r/min, most preferably 1000r/min~1200r/min.
In the present invention, the emulsion chain extension is preferably specially:
The neutralized reaction product is mixed with the mixture of water with amine chain extender, emulsion chain extension is carried out.
In the present invention, the amine chain extender is preferably polyamine, most preferably ethylenediamine, Putriscine, 1,6- One or more in hexamethylene diamine, diethylenetriamine, triethylene tetramine and TEPA.In the present invention, the amine expands Depending on the consumption of chain agent is according to the mole of remaining isocyanate in the performed polymer, in the present invention, the amine chain extender Middle amino is preferably (0.6~0.9) with the mol ratio of remaining isocyanate in performed polymer:1, more preferably (0.7~0.8):1. In the present invention, the emulsion chain extension is carried out under conditions of stirring, and in the present invention, the speed of the stirring is preferably 800r/min~1500r/min, more preferably 900r/min~1300r/min, most preferably 1000r/min~1200r/min. In the present invention, the time of the emulsion chain extension be preferably 0.5h~2h, more preferably 1h~1.5h;In embodiments of the invention In, the time of the emulsion chain extension can be specially 0.5h, 0.75h, 1h, 1.25h, 1.5h, 1.75h or 2h.
After completing the emulsion chain extension, the chain extension product that the present invention will preferably be obtained carries out vacuum distillation and removes drop therein Stick, obtains aqueous polyurethane.The present invention does not have special limitation to the method for the vacuum distillation, can remove the chain extension Thinner in product.In an embodiment of the present invention, when the thinner is acetone, the temperature of vacuum distillation is preferred It is 40 DEG C~50 DEG C;The vacuum of the vacuum distillation is preferably 10kpa~30kpa, more preferably 15kpa~25kpa;It is described The time of vacuum distillation is preferably 1h~3h, more preferably 1.5h~2.5h.
In the present invention, the aqueous polyurethane is Blue-Color Semitransparent aqueous polyurethane emulsion.
After obtaining aqueous polyurethane, the present invention detects that specific detection method is to aqueous polyurethane:
Solid content test is carried out according to the method in standard GB/T/T 1725-79;
The tensile property of aqueous polyurethane film is tested according to ASTM D882 standards, tester uses GOTECH GT-7010-AEP;
The light transmittance of aqueous polyurethane film is tested according to ASTM D1003-61 standards, tester uses GZTEK GZ502A;
Storage stability test is carried out by the following method:Aqueous polyurethane emulsion is placed in centrifugal separator, Centrifugation 15min under 3000rpm/min, illustrates storage stability more than 6 months if being produced without precipitation.
It is the glycol modified aqueous polyurethane of organosilicon, the organosilicon the invention provides a kind of aqueous polyurethane Dihydroxylic alcohols has structure shown in Formulas I, in Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~20;R3And R4Solely On the spot selected from H or alkyl that carbon number is 1~10;N, p and q are the degree of polymerization, independently are 10~100.In the present invention, will Organosilicon dihydroxylic alcohols is modified to polyurethane, due to the effect of organosilicon dihydroxylic alcohols, so as to get aqueous polyurethane occur without Lamination, the component containing organosilicon can be slightly separated with other aqueous polyurethane components during film forming, make Organosilicon is enriched in film surface, so as to form homogeneous opaque film so that the present invention provide aqueous polyurethane have compared with Good covering performance and comfortable feel.
And the aqueous polyurethane film caudacoria that the present invention is provided has preferable mechanical property and preferable stable storing Property.The tensile strength of the aqueous polyurethane that the embodiment of the present invention 4 is obtained point reagent film forming caudacoria is 17Mpa, and elongation at break is 560%.
In order to further illustrate the present invention, the aqueous polyurethane to present invention offer and its preparation side with reference to embodiment Method is described in detail, but they can not be interpreted as into limiting the scope of the present invention.
In the embodiment of the present invention, IPDI is purchased from Ying Chuan companies;Polytetrahydrofuran diol (PTMEG), Number-average molecular weight is 600,1000 and 2000, is industrial goods purchased from South Korea PTG;Polypropylene glycol, number-average molecular weight be 1000, 2000th, 3000 and 4000, it is industrial goods purchased from Historic Area of Zhongshan in Nanjing City petrochemical industry;Dihydromethyl propionic acid is industrial goods, public purchased from PERSTORP Department;Triethylamine is industrial goods, purchased from western Gansu Province chemical industry;Polycaprolactone glycol is industrial goods, and number-average molecular weight is 1000 and 2000, purchase From PERSTORP companies;Double hydrogen endcapped siloxanes (HPDMS) are experiment reagent, and number-average molecular weight is 1000, are tried purchased from bass is special Agent;Monoallyl end-blocking polyethylene glycol oxide-propylene ether (MAPO) is industrial goods, and number-average molecular weight is that 600, EO/PO ratios are about 1:2.5, created purchased from winning;Chain extender is BDO (BDO), hexamethylene diamine and ethylenediamine, experiment reagent is, purchased from Tianjin section Mi Ou chemical reagent Co., Ltd;Catalyst is dibutyl tin laurate (T12), technical grade, purchased from U.S.'s gas.In this reality In applying example, using the high speed emulsion dispersion machine of model SDF400.
Embodiment 1
By in 100g HPDMS and 120g MAPO addition there-necked flasks, stirring is added thereto to chloroplatinic acid when being warming up to 85 DEG C Catalyst 0.2ml, is continuously heating to 95 DEG C and insulation reaction 5h, the product that will be obtained through deionized water elute catalyst and Residual monomer, obtains polyether block modified organic silicon dihydroxylic alcohols.
Embodiment 2
In the 250m1 four-hole boiling flasks equipped with agitator, condensing reflux pipe and thermocouple, add 25gIPDI, 50g number equal Molecular weight is 2000 PTMEG, 0.01g T12 catalyst, 4g dihydromethyl propionic acids, 0.5g BDO and 10g embodiment 1 be prepared into The organosilicon dihydroxylic alcohols for arriving, the mixed material that will be obtained reacts 4h at 80 DEG C, is cooled to 55 DEG C and is added thereto to 20g acetone again Viscosity reduction, continues to be cooled to 45 DEG C, is added thereto to 3g triethylamines, and performed polymer is obtained after 0.5h;
During 330g water is added into the performed polymer for obtaining under the high-speed stirred of 1000r/min with high speed emulsion dispersion machine, point 1.4g ethylenediamines are added dropwise after scattering thereto, the painting of Blue-Color Semitransparent aqueous polyurethane emulsion is obtained after continuing dispersed with stirring 30min Decorations agent.
The present invention detects that as a result show, emulsion solid content is 20% to the aqueous polyurethane emulsion finishing agent for obtaining, Film forming light transmittance is 38%, and film stretching is by force 14Mpa, and elongation at break is 670%, and storage stability is more than 6 months.
Embodiment 3
The preparation of organosilicon dihydroxylic alcohols is carried out using the technical scheme of embodiment 1, unlike, in the present embodiment, reaction Temperature is 90 DEG C, and the reaction time is 4h.
Embodiment 4
In the 250m1 four-hole boiling flasks equipped with agitator, condensing reflux pipe and thermocouple, add 27gIPDI, 45g number equal Molecular weight is 2000 PTMEG, 0.01g T12 catalyst, 4g dihydromethyl propionic acids, 0.5g BDO and 15g embodiment 2 be prepared into The organosilicon dihydroxylic alcohols for arriving, the mixed material that will be obtained reacts 4h at 80 DEG C, is cooled to 55 DEG C and is added thereto to 20g acetone drop It is viscous, continue to be cooled to 45 DEG C, then 3g triethylamines are added thereto to, performed polymer is obtained after 0.5h;
During 340g water is added into performed polymer under the high-speed stirred of 1000r/min with high speed emulsion dispersion machine, after scattering 1.6g ethylenediamines are added dropwise thereto, Blue-Color Semitransparent aqueous polyurethane emulsion finishing agent is obtained after continuing dispersed with stirring 30min.
The aqueous polyurethane emulsion finishing agent that present invention detection is obtained, as a result shows, emulsion solid content is 20%, and film forming is saturating Light rate is 32%, and film stretching intensity is 17Mpa, and elongation at break is 560%, and storage stability is more than 6 months.
Embodiment 5
The preparation of organosilicon dihydroxylic alcohols is carried out using the technical scheme of embodiment 1, unlike, in the present embodiment, reaction Temperature is 100 DEG C, and the reaction time is 6h.
Embodiment 6
In the 250m1 four-hole boiling flasks equipped with agitator, condensing reflux pipe and thermocouple, add 23gIPDI, 55g number equal Molecular weight is 1000 polycaprolactone glycol, 0.01g T12 catalyst, 4g dihydromethyl propionic acids, 0.5g BDO and 5g embodiment 1 The organosilicon dihydroxylic alcohols for preparing, the mixed material that will be obtained reacts 4h at 80 DEG C, is cooled to 55 DEG C and is added thereto to 20g Acetone viscosity reduction, continues to be cooled to 45 DEG C, then is added thereto to 3g triethylamines, and performed polymer is obtained after reaction 0.5h;
During 320g water is added into performed polymer under the high-speed stirred of 1000r/min with high speed emulsion dispersion machine, after scattering 1g ethylenediamines are added dropwise thereto again, continue to obtain Blue-Color Semitransparent aqueous polyurethane emulsion finishing agent after disperseing 30min.
The aqueous polyurethane emulsion finishing agent that present invention detection is obtained, as a result shows, emulsion solid content is 20%, and film forming is saturating Light rate is 43%, and film stretching intensity is 12Mpa, and elongation at break is 750%, and storage stability is more than 6 months.
Embodiment 7
In the 250m1 four-hole boiling flasks equipped with agitator, condensing reflux pipe and thermocouple, add 26gIPDI, 40g number equal Molecular weight be 600 PCDL, 0.01g T12 catalyst, 4g dihydromethyl propionic acids, 0.5g trimethylolpropanes and The organosilicon dihydroxylic alcohols that 20g embodiments 1 are prepared, the mixed material that will be obtained reacts 4h at 80 DEG C, be cooled to 55 DEG C to 20g acetone viscosity reductions are wherein added, continues to be cooled to 45 DEG C, then be added thereto to 3g triethylamines, performed polymer is obtained after 0.5h;
During 330g water is added into performed polymer under the high-speed stirred of 1000r/min with high speed emulsion dispersion machine, after scattering 1.8g butanediamine is added dropwise thereto again, continues to obtain Blue-Color Semitransparent aqueous polyurethane emulsion finishing agent after disperseing 30min.
The aqueous polyurethane emulsion finishing agent that present invention detection is obtained, as a result shows, emulsion solid content is 20%, and film forming is saturating Light rate be 28%, film stretching intensity be 22Mpa, elongation at break 430%, storage stability is more than 6 months.
As seen from the above embodiment,
In the present invention, organosilicon dihydroxylic alcohols is modified to polyurethane, is wrapped in the structure of the organosilicon dihydroxylic alcohols Mol ratio is included for (2~4):1 expoxy propane and oxirane so that the polarity of organosilicon dihydroxylic alcohols there occurs change, so that In making the glycol modified polyurethane of the organosilicon for obtaining there is certain strand pole in organosilicon composition with other polyurethane components Sex differernce, there is certain incompatibility, is produced in film forming procedure and is slightly separated, and organosilicon composition is enriched in film formation surface, from And forming homogeneous opaque film so that the aqueous polyurethane that the present invention is provided need not add additional when being used as finishing agent Additive, still with performance and comfortable feel is preferably covered, so as to would not also there is the storage that outer doping brings The problem of stability difference feel and compounding stability.And the aqueous polyurethane film caudacoria that the present invention is provided has preferable power Learn performance.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (10)

1. a kind of aqueous polyurethane, is the glycol modified aqueous polyurethane of organosilicon, and the organosilicon dihydroxylic alcohols has Formulas I institute Show structure:
In Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;
R3And R4Independently selected from H or methyl;
N, p and q are the degree of polymerization, independently are 10~100;
The organosilicon dihydroxylic alcohols structure includes expoxy propane and oxirane, the expoxy propane and oxirane mole Than being (2~4):1.
2. aqueous polyurethane according to claim 1, it is characterised in that R1And R2It is 1 independently selected from H or carbon number ~3 alkyl.
3. aqueous polyurethane according to claim 1, it is characterised in that described n, p and q independently are 20~80.
4. aqueous polyurethane according to claim 1, it is characterised in that the preparation method of the organosilicon dihydroxylic alcohols includes Following steps:
The polyethers that the polysiloxanes that double hydrogen are blocked is blocked with monoene alkyl is reacted in the presence of catalyst, is obtained organic Silicon dihydroxylic alcohols;
The monoene alkyl end capped polyether monomer includes expoxy propane and oxirane, the expoxy propane and oxirane Mol ratio is (2~4):1.
5. aqueous polyurethane according to claim 4, it is characterised in that described pair of polysiloxanes and monoolefine of hydrogen end-blocking The temperature of the polyether reactant of base end-blocking is 90 DEG C~100 DEG C;
The described pair of polysiloxanes of hydrogen end-blocking and the time of the polyether reactant of monoene alkyl end-blocking are 4h~6h.
6. aqueous polyurethane according to claim 4, it is characterised in that the catalyst is platinum metal catalyst;
The consumption of the catalyst is 1ppm~10ppm.
7. a kind of preparation method of aqueous polyurethane, comprises the following steps:
A) in the presence of catalyst, by the organosilicon dihydroxylic alcohols with Formulas I structure, aliphatic isocyanates, polyalcohol and the moon Ionic hydrophilic monomer chain extender carries out prepolymerization reaction, obtains performed polymer, and the aliphatic isocyanates at least include that a kind of two is different Cyanate;
B) neutralization reaction will be carried out with neutralization reagent after the performed polymer viscosity reduction, obtains neutralization reaction product;
C) after the neutralization reaction product is mixed with water, emulsion chain extension is carried out, obtains aqueous polyurethane;
In Formulas I, R1And R2Independently selected from the alkyl that H or carbon number are 1~5;
R3And R4Independently selected from H or methyl;
N, p and q are the degree of polymerization, independently are 10~100;
The organosilicon dihydroxylic alcohols structure includes expoxy propane and oxirane, the expoxy propane and oxirane mole Than being (2~4):1.
8. preparation method according to claim 7, it is characterised in that the temperature of the prepolymerization reaction is 70 DEG C~100 DEG C.
9. preparation method according to claim 7, it is characterised in that the time of the prepolymerization reaction is 2h~5h.
10. aqueous polyurethane is used for the application of finishing agent, and the aqueous polyurethane is water described in claim 1~6 any one The aqueous polyurethane that property polyurethane or preparation method described in any one of claim 7~9 are obtained.
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CN105237725B (en) * 2015-09-14 2018-08-28 合肥安利聚氨酯新材料有限公司 A kind of middle hard height resists cold heat resistanceheat resistant adhesion agreeable type minute surface face layer polyurethane resin and preparation method thereof
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1772785A (en) * 2005-11-11 2006-05-17 华中师范大学 Prepn of dihydroxy dialkyl siloxane polymer modified water-base polyurethane
CN101225150A (en) * 2008-01-28 2008-07-23 浙江大学 Method for synthesizing water-dispersion organosilicon-polyurethane block copolymer
CN101381462A (en) * 2008-09-10 2009-03-11 中国科学技术大学 Polysiloxane binary alcohol with polyether block and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1772785A (en) * 2005-11-11 2006-05-17 华中师范大学 Prepn of dihydroxy dialkyl siloxane polymer modified water-base polyurethane
CN101225150A (en) * 2008-01-28 2008-07-23 浙江大学 Method for synthesizing water-dispersion organosilicon-polyurethane block copolymer
CN101381462A (en) * 2008-09-10 2009-03-11 中国科学技术大学 Polysiloxane binary alcohol with polyether block and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
基于EPDMS的水性聚氨酯合成与表面性能研究;李维虎等;《中国涂料》;20101231;第25卷(第6期);40-44 *

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