CN102702968A - Anti-scratch dual-component water-borne wood coating and preparation method thereof - Google Patents
Anti-scratch dual-component water-borne wood coating and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an anti-scratch dual-component water-borne wood coating and a preparation method thereof. The wood coating comprises a component A and a component B, wherein the component A comprises the following components: water-borne nano-polysiloxane, water-borne nanometer anti-scratch agent and water-borne nano-wax emulsion; and the component B comprises the following components: water dispersion polyisocyanate, a catalyst and an organic solvent. The preparation method comprises the following steps: 1) selecting the water-borne nano-polysiloxane, the water-borne nanometer anti-scratch agent and the water-borne nano-wax emulsion, placing into a dispersing machine, and uniformly dispersing to obtain the component A; 2) selecting the water dispersion polyisocyanate, the catalyst and the organic solvent, and placing into the dispersing machine to obtain the component B; and 3) uniformly mixing the component A and the component B, and stirring for use. According to the invention, the formed film paint has good materialization property, and is high temperature resistant, anti-scratch, suitable for all kinds of metal surfaces comprising aluminum alloy and steel, and used for protecting varnish on the stainless steel surface to enhance the hardness and the scratch resistance.
Description
Technical field
The present invention relates to the wood lacquer technical field, be specifically related to a kind of scratch resistance double-component aqueous wood paint and preparation method.
Background technology
Water-borne wood coating is the inevitable direction of of coating development; But because the water-borne wood coating rate of drying is slow; Filming seldom has crosslinked or reason such as cross-linking density is less; The physical and chemical performance and the solvent based coating that cause water-borne wood coating to be filmed have bigger gap, are especially influencing its development largely aspect hardness and the scratch resistance performance.Particularly in the field of furniture of some higher gears, the better hardness that requires to have filmed also will have resistance to marring preferably outward, and this makes water-borne wood coating make slow progress in a field.Although a lot of researchists turn to double-component aqueous woodwork coating to sight; Through adding waterborne curing agent; Increase the cross-linking density of filming and improve the physical and chemical performance of filming; The physical and chemical performance of filming than single-component water-based woodwork coating has had large increase, but still also has some gaps with solvent based coating.
CN 101016431A discloses a kind of nano antibacterial water woodenware paint and preparation method thereof; This patent aqueous woodware paint is a single-component; Nano material is to use as a kind of anti-biotic material, focuses on a technology difficult problem that solves free settling in the common inorganic antiseptic process of manufacture, easy to change and easy reunion.But the defective that this invention exists is that resistance to marring is poor.
CN 101659825A provides a kind of double-component aqueous nano scratch resistant wood coating and working method thereof, and said woodwork coating comprises first component and two components of second component, and second weight percentages of components component is: water nano resin 75 ~ 90%; Skimmer 0.1 ~ 1.0%, matting agent 0 ~ 3%, thickening material 0.1 ~ 1.0%; Film coalescence aid 1 ~ 5%, wetting agent 0.1 ~ 0.5%, aqueous nano scratch resistant agent 1 ~ 5%; Water nano wax emulsion 1 ~ 5%, pH regulator agent 0.1 ~ 0.3%, water 1 ~ 5%.The scratch resistance performance of this invention is still good inadequately.
Summary of the invention
The purpose of this invention is to provide a kind of scratch resistance double-component aqueous wood paint and preparation method, to overcome the defective of the resistance to marring difference that existing water-borne wood coating exists.
For reaching this purpose, the present invention adopts following technical scheme:
A kind of scratch resistance double-component aqueous wood paint comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 45 ~ 90;
Aqueous nano scratch resistant agent 2 ~ 18;
Water nano wax emulsion 1 ~ 11;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 20 ~ 48;
Catalyzer 0.5 ~ 8;
Organic solvent 35 ~ 60.
Water nano ZGK 5 according to the invention can adopt the water nano ZGK 5 of commercial concentration, and generally its commercial concentration is 20 ~ 50% (mass concentrations), and preferred mass concentration is that 30% water nano gathers silicic acid and prepares burden.Its parts by weight can select 45.5 ~ 88,56 ~ 80,62 ~ 75,68 ~ 72,70 etc.
Aqueous nano scratch resistant agent according to the invention, its staple are nano-aluminium oxide, and average nanometer particle size is 10 ~ 30nm, like the NMA-1 of Beijing initiative nanometer company.Its parts by weight can select 2.2 ~ 17,5 ~ 12,8 ~ 10 etc.
Water nano wax emulsion according to the invention, the feel of filming in order to improvement is like 5001 oxidic polyethylene nanometer paraffin wax emulsion of Fushun Wen Ai company.Water nano wax emulsion is the oxidic polyethylene nanometer paraffin wax emulsion, and its parts by weight can select 1.05 ~ 10.5,2.3 ~ 8,4 ~ 6,5.2 etc.Preferred 3 ~ 8, further preferred 5.
The cruel solidifying agent of aqueous dispersion type polyisocyanate according to the invention is IPDI type or HDI type, and it is 50 ~ 100% that weight contains admittedly, can adopt the Bayhydur XP2G55 of German BAVER company.Its parts by weight can select 20.2 ~ 47.5,26 ~ 42,33 ~ 37,35 etc.
The weight ratio of first component according to the invention and component B is 1:1 ~ 6:1,1.02:1 ~ 5.86:1 for example, 2.1:1 ~ 5.4:1,2.8:1 ~ 4.8:1,3.3:1 ~ 4:1,3.8:1 etc., further preferred 1.5:1 ~ 3:1, most preferably 2:1.
As optimal technical scheme of the present invention, said wood lacquer comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 60 ~ 82;
Aqueous nano scratch resistant agent 6 ~ 13;
Water nano wax emulsion 5 ~ 8;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 34 ~ 40;
Catalyzer 3 ~ 6;
Organic solvent 44 ~ 50.
First component according to the invention also comprises skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator.
The preferred polysiloxane-polyether copolymer of said skimmer, the trade mark that can adopt TEGO company is the product of TEGO810.
The preferred nanometer titanium dioxide silicon-type of said matting agent, the trade mark that can adopt Shanghai He Shi wall company is the product of CC300.
Said thickening material is one or both in the association type polyurethane thickener, and its chemical composition is roughly association type urethane, can adopt the PU40 of German bright icepro company.
Said film coalescence aid can for more environmental protection, can adopt the propylene glycol kind solvent for alcohol ether kind solvent or alkoxide solvent, like the dipropylene glycol butyl ether (DPnB) of U.S. DOW company.
The preferred polysiloxane-polyether copolymer of said wetting agent, the trade mark that can adopt TEGO company is the product of TEGO245; Said skimmer and wetting agent are polysiloxane-polyether copolymer, and still, difference wherein is that the former wetting ability is poor, and latter's wetting ability will be got well.
Said pH value regulator, pH value regulator is a 2-amino-2-methyl-1-propanol, like the AMP-95 of U.S. Mykrolis Corp.
The catalyzer of said component B is selected from the organo-metallic carboxylate salt; A kind of in preferred dibutyl tin laurate, zinc octoate or the zirconium caprylate or or at least two kinds mixture; Dibutyl tin laurate for example; Zinc octoate and zirconium caprylate, the mixture of dibutyl tin laurate, zinc octoate and zirconium caprylate etc., further preferred dibutyl tin laurate.
As the most preferred technical scheme of the present invention, said wood lacquer comprises first component and component B, and said first component comprises following component by weight:
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 37;
Dibutyl tin laurate 5;
Organic solvent 48.
" comprising " of the present invention, mean it except that said component, can also comprise other components, these other components are given said wood lacquer different characteristic.In addition, " comprising " of the present invention, can also replace with enclosed " being " or " by ... form ".
A kind of preparation is the method for scratch resistance double-component aqueous wood paint as stated, comprises the steps:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and water nano wax emulsion are put into dispersion machine; After disperseing 5 ~ 20min under rotating speed 500 ~ 1000rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, catalyzer and organic solvent are put into dispersion machine, under rotating speed 350 ~ 800rps, disperse 3 ~ 15min to make component B.
3) first component and component B are mixed with the weight ratio of 1:1 ~ 6:1 after, continue to stir 2 ~ 8h and can use.
The described rotating speed of step 1) of the present invention can be selected 502 ~ 997rps, 530 ~ 945rps, 568 ~ 920rps, 620 ~ 850rps, 685 ~ 800rps, 730rps etc., preferred 650 ~ 800rps, further preferred 730rps.
Further, said jitter time can be selected 5.02 ~ 18.6min, 6.8 ~ 17min, and 8.2 ~ 14min, 10 ~ 12.8min, 11min etc. are preferably 12 ~ 18min, further preferred 15min.
Step 2 of the present invention) described rotating speed can be selected 352 ~ 785rps, 415 ~ 720rps, 480 ~ 635rps, 520 ~ 580rps, 550rps etc., preferred 450 ~ 700rps, further preferred 500rps.
Further, said jitter time can be selected 3.1 ~ 14.8min, 5 ~ 12min, and 7.5 ~ 10min, 9min etc. are preferably 5 ~ 12min, further preferred 10min.
Constructional method of the present invention requires to be controlled at 4# flow cup 14 ~ 16S, spray gun bore 1 ~ 1.2mm for spraying, working viscosity; Spraying air pressure 0.4 ~ 0.5MPa, distance 200 ~ 300mm between rifle mouth and the workpiece adopts " wetting, it is wet to bump " spraying coating process; Be horizontal spray one, vertical spray respectively repeats once together again; Guarantee all applications under the incomplete evaporable state of paint solvent at every turn, hide base material fully until reaching.Facts have proved that the build of coating of the present invention should be controlled at 20 ~ 30 μ m, can obtain best paint film appearance like this.Film blocked up easy generation peeling, cracking phenomena.
Behind the air-dry 3 ~ 10min of paint film, get into the prebake district, be warming up to 100 ℃ with the temperature rise rate of 5 ~ 15 ℃/min; Moisture is toasted away, be rapidly heated 150 ~ 180 ℃ again, baking 10 ~ 20min; Make coating composition crosslinking curing film forming, cooling is come out of the stove then, to guarantee that paint film is complete.
Compare with the prior art scheme, the present invention has following beneficial effect:
Double-component aqueous nano scratch resistant wood coating of the present invention has following advantage: low VOC, and almost tasteless, dilute with water, ambient cure is filmed except good physical and chemical performance is arranged, and also has fabulous resistance to marring, can bear the above load of 200g.Paint film is hard, and transparency is high, and scratch resistance is excellent, and fullness ratio is good, and gloss is even, and the feel exquisiteness is smooth, product application property, excellent storage stability.
The paint film that the present invention forms is high temperature resistant; Scratch resistance; Applicable to the various metallic surfaces that comprise duraluminum, iron and steel, as can be applicable to the architecture indoor decorative coveringn of Aluminum curtain wall plate outward, for example: the decorative aluminum plate of railway station, airport, subway station staircase sidewall; And the place of in the public building scratch resistance being had relatively high expectations, for example: positions such as hall, corridor, column; Also be applicable to anti-stroke, fire protection coating of high-speed railway passenger, subway, railcar interior trim panel; Also can be used for the varnish protection of stainless steel surface, strengthen hardness and resistance to marring.
Down in the face of further explain of the present invention.But following instance only is a simple and easy example of the present invention, does not represent or limits rights protection scope of the present invention, and interest field of the present invention is as the criterion with claims.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical case of the present invention but non-restrictive example is following:
Embodiment 1
A kind of scratch resistance double-component aqueous wood paint comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 90;
Aqueous nano scratch resistant agent 18;
Water nano wax emulsion 1;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 20;
Zinc octoate 8;
Organic solvent 35.
The preparation method is following:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and water nano wax emulsion are put into dispersion machine; After disperseing 20min under the rotating speed 500rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, zinc octoate and organic solvent are put into dispersion machine, under rotating speed 800rps, disperse 3min to make component B.
3) first component and component B are mixed with the weight ratio of 1:1 after, continue to stir 2h and can use.
Embodiment 2
A kind of scratch resistance double-component aqueous wood paint comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 45;
Aqueous nano scratch resistant agent 2;
Water nano wax emulsion 11;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 48;
Zirconium caprylate 0.5;
Organic solvent 60.
The preparation method is following:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and water nano wax emulsion are put into dispersion machine; After disperseing 5min under the rotating speed 1000rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, zirconium caprylate and organic solvent are put into dispersion machine, under rotating speed 350rps, disperse 15min to make component B.
3) first component and component B are mixed with the weight ratio of 6:1 after, continue to stir 8h and can use.
Embodiment 3
A kind of scratch resistance double-component aqueous wood paint comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 60;
Aqueous nano scratch resistant agent 6;
Water nano wax emulsion 8;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 40;
Dibutyl tin laurate 3;
Organic solvent 44.
The preparation method is following:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and water nano wax emulsion are put into dispersion machine; After disperseing 13min under the rotating speed 800rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, dibutyl tin laurate and organic solvent are put into dispersion machine, under rotating speed 450rps, disperse 10min to make component B.
3) first component and component B are mixed with the weight ratio of 1.5:1 after, continue to stir 3h and can use.
Embodiment 4
A kind of scratch resistance double-component aqueous wood paint comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 82;
Aqueous nano scratch resistant agent 13;
Water nano wax emulsion 5;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 34;
Catalyzer 6;
Organic solvent 50.
The preparation method is following:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and water nano wax emulsion are put into dispersion machine; After disperseing 18min under the rotating speed 650rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, catalyzer and organic solvent are put into dispersion machine, under rotating speed 700rps, disperse 5min to make component B.
3) first component and component B are mixed with the weight ratio of 3:1 after, continue to stir 5h and can use.
Embodiment 5
A kind of scratch resistance double-component aqueous wood paint comprises first component and component B, and said first component comprises following component by weight:
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 37;
Dibutyl tin laurate 5;
Organic solvent 48.
The preparation method is following:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and oxidic polyethylene nanometer paraffin wax emulsion are put into dispersion machine; After disperseing 15min under the rotating speed 730rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, dibutyl tin laurate and organic solvent are put into dispersion machine, under rotating speed 500rps, disperse 10min to make component B.
3) first component and component B are mixed with the weight ratio of 2:1 after, continue to stir 5h and can use.
With disclosed technical scheme among the CN 101659825A as comparative example of the present invention:
The comparative example 1
Second component raw-material weight per-cent is following:
Water nano resin POD6250 83.0%
Skimmer TEGO810 0.3%
Matting agent CC300 1.2%
Thickening material PU40 0.3%
Film coalescence aid DPnB 3%
Wetting agent TEGO245 0.2%
Nano scratch resistant agent NMA-1 5%
Water nano wax emulsion 5,001 3%
PH value regulator AMP-95 0.2%
Water 3.8%
100%
First component: Bayhydur XP2655 15%;
POD6251 is for containing-OH water nano ACRYLIC EMULSION, and weight contains 35% admittedly;
But Bayhydur XP2655 is the water decentralized polyisocyanate curing agent of German BAYER company.
Concrete making processes is:
(1) at first the water nano resin is added in the container, under agitation add skimmer, dispersed with stirring;
(2) secondly add matting agent and thickening material, and dispersed with stirring;
(3) add film coalescence aid, wetting agent, aqueous nano scratch resistant agent, water nano wax emulsion and pH regulator agent then, dispersed with stirring promptly obtains product with thickening material and water adjustment viscosity to 80KU/25 ℃ at last.
The comparative example 2
Prescription:
The trade mark of raw material is with comparative example 1.
The preparation method is with comparative example 1.
First component: Bayhydur XP2655 10%.
The TP of drawing performance according to the anti-scriber of mensuration paint film among the GB/T9279-1988 " paint and varnish scratch test " detects embodiment of the invention 1-5 and Comparative Examples 1,2, and detected result is following:
The scratch resistance test-results of each embodiment of table 1
| Embodiment | Can bear load/g |
| Embodiment 1 | 230 |
| Embodiment 2 | 427 |
| Embodiment 3 | 380 |
| Embodiment 4 | 312 |
| Embodiment 5 | 500 |
| Comparative Examples 1 | 100 |
| Comparative Examples 2 | 100 |
Can bear the load that load is meant when coating surface does not scratch to be adopted.Can obviously find out from table 1; The load that embodiment of the invention 1-5 can bear is more than 230g, and Comparative Examples 1,2 only can be born the load about 100g; Therefore, the scratch resistance performance of technical scheme of the present invention is higher than disclosed technical scheme among the CN 101659825A far away.
Applicant's statement; The person of ordinary skill in the field is on the basis of the foregoing description, and is with the concrete content point value of the foregoing description component, combined with the technical scheme of summary of the invention part; Thereby the new numerical range that produces; Also be one of record scope of the present invention, the application is no longer enumerated these numerical ranges for making specification sheets simple and clear.
Applicant's statement, the present invention explains preparation process of the present invention through the foregoing description, but the present invention is not limited to above-mentioned preparation process, does not mean that promptly the present invention must rely on above-mentioned preparation process and could implement.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of raw material that the present invention selects for use and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (10)
1. a scratch resistance double-component aqueous wood paint is characterized in that, comprises first component and component B, and said first component comprises following component by weight:
Water nano ZGK 5 45 ~ 90;
Aqueous nano scratch resistant agent 2 ~ 18;
Water nano wax emulsion 1 ~ 11;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 20 ~ 48;
Catalyzer 0.5 ~ 8;
Organic solvent 35 ~ 60.
2. wood lacquer as claimed in claim 1 is characterized in that, the weight ratio of said first component and component B is 1:1 ~ 6:1, further preferred 1.5:1 ~ 3:1, most preferably 2:1.
3. according to claim 1 or claim 2 wood lacquer is characterized in that said water nano wax emulsion is the oxidic polyethylene nanometer paraffin wax emulsion;
Preferably, the parts by weight of said water nano wax emulsion are 3 ~ 8, most preferably 5.
4. like the described wood lacquer of one of claim 1-3, it is characterized in that, comprise first component and component B, said first component comprises following component by weight:
Water nano ZGK 5 60 ~ 82;
Aqueous nano scratch resistant agent 6 ~ 13;
Water nano wax emulsion 5 ~ 8;
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 34 ~ 40;
Catalyzer 3 ~ 6;
Organic solvent 44 ~ 50.
5. according to the described wood lacquer of one of claim 1-4, it is characterized in that said first component also comprises skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator.
6. according to the described wood lacquer of one of claim 1-5; It is characterized in that; The catalyzer of said component B is selected from the organo-metallic carboxylate salt, a kind of in preferred dibutyl tin laurate, zinc octoate or the zirconium caprylate or or at least two kinds mixture, further preferred dibutyl tin laurate.
7. like the described wood lacquer of one of claim 1-6, it is characterized in that, comprise first component and component B, said first component comprises following component by weight:
Said component B comprises following component by weight:
Aqueous dispersion type polymeric polyisocyanate 37;
Dibutyl tin laurate 5;
Organic solvent 48.
8. a method for preparing like the said scratch resistance double-component aqueous wood paint of one of claim 1-7 comprises the steps:
1) chooses the water nano ZGK 5 by weight; Aqueous nano scratch resistant agent and water nano wax emulsion are put into dispersion machine; After disperseing 5 ~ 20min under rotating speed 500 ~ 1000rps; Add skimmer, matting agent, thickening material, film coalescence aid, wetting agent and pH value regulator again, make the first component after being uniformly dispersed;
2) choose the aqueous dispersion type polymeric polyisocyanate by weight, catalyzer and organic solvent are put into dispersion machine, under rotating speed 350 ~ 800rps, disperse 3 ~ 15min to make component B;
3) first component and component B are mixed with the weight ratio of 1:1 ~ 6:1 after, continue to stir 2 ~ 8h and can use.
9. method as claimed in claim 8 is characterized in that, the preferred 650 ~ 800rps of the described rotating speed of step 1), further preferred 730rps;
Preferably, said jitter time is 12 ~ 18min, further preferred 15min.
10. like claim 8 or 9 described methods, it is characterized in that step 2) the preferred 450 ~ 700rps of described rotating speed, further preferred 500rps;
Preferably, said jitter time is 5 ~ 12min, further preferred 10min.
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| CN2012101929196A CN102702968A (en) | 2012-06-12 | 2012-06-12 | Anti-scratch dual-component water-borne wood coating and preparation method thereof |
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| CN2012101929196A CN102702968A (en) | 2012-06-12 | 2012-06-12 | Anti-scratch dual-component water-borne wood coating and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463173A (en) * | 2007-12-19 | 2009-06-24 | 拜尔材料科学股份公司 | Silicone-containing binder dispersions |
| CN101659825A (en) * | 2008-08-28 | 2010-03-03 | 上海富臣化工有限公司 | Double-component aqueous nano scratch resistant wood coating and method for producing same |
-
2012
- 2012-06-12 CN CN2012101929196A patent/CN102702968A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463173A (en) * | 2007-12-19 | 2009-06-24 | 拜尔材料科学股份公司 | Silicone-containing binder dispersions |
| CN101659825A (en) * | 2008-08-28 | 2010-03-03 | 上海富臣化工有限公司 | Double-component aqueous nano scratch resistant wood coating and method for producing same |
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Application publication date: 20121003 |