CN103046378A - Two-component matte skin feel treatment agent for synthetic leather and surface treatment method of synthetic leather - Google Patents
Two-component matte skin feel treatment agent for synthetic leather and surface treatment method of synthetic leather Download PDFInfo
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- CN103046378A CN103046378A CN201210583811XA CN201210583811A CN103046378A CN 103046378 A CN103046378 A CN 103046378A CN 201210583811X A CN201210583811X A CN 201210583811XA CN 201210583811 A CN201210583811 A CN 201210583811A CN 103046378 A CN103046378 A CN 103046378A
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Abstract
The invention discloses a two-component matte skin feel treatment agent for synthetic leather and a surface treatment method of the synthetic leather. The treatment agent comprises a basic body component and a solidifying component, wherein the basic body component is formed by mixing polyester polyol resin, butyl acetate, dimethylbenzene, diacetone alcohol, silicon dioxide powder or modified silicon dioxide powder, dimethicone, a leveling agent and a catalyst; and the solidifying component is formed by mixing a TDI (toluene diisocynate) prepolymer, a TDI additive product, butyl acetate, diacetone alcohol and a dehydrating agent. A formula of the treatment agent is reasonable in design, and the surface of the synthetic leather can obtain very fine and smooth touch feeling similar to skin after the treatment agent is used; and meanwhile, the surface of the synthetic leather is dim in luster, simple and unsophisticated in style and very strong in genuine leather feeling. In addition, the treatment agent is simple to prepare and use.
Description
Technical field
The present invention relates to the synthetic leather technical field of surface, particularly a kind of synthetic leather surface treatment is with cloudy surface skinfeel finishing agent, the preparation method of cloudy surface skinfeel finishing agent and the method for utilizing this cloudy surface skinfeel finishing agent that the synthetic leather surface is processed.
Background technology
The finishing of synthetic leather and rear finishing technique are to improve product specification, promote the important step of synthetic leather product quality and economic worth.Synthetic leather surface effect without ornamenting is comparatively simple generally speaking.By finishing and rear arrangement, can expect feel, surface touch to synthetic leather, outward appearance is decorative pattern, optical haze degree, gloss, color, style for example, and the serviceability etc. of leather is improved.The product that the process for treating surface of improvement synthetic leather satisfies the ever-increasing demand of people with acquisition is the target that current in the industry practitioner pursues always.
Summary of the invention
Technical problem to be solved by this invention provides the two component cloudy surface skinfeel finishing agents of a kind of use for synthetic leather that can make synthetic leather obtain similar skin feel and simple and unsophisticated appearance effect.
The present invention also will provide a kind of surface treatment method of synthetic leather, and the synthetic leather after the wherethrough reason has similar skin feel and simple and unsophisticated appearance effect.
For solving above technical problem, a kind of technical scheme that the present invention takes is: the two component cloudy surface skinfeel finishing agents of a kind of use for synthetic leather, and it comprises matrix component and the curing component of independent packaging, wherein:
The matrix component is mixed by the raw material of following weight portion: polyester polyol resin 25-35 part; Butyl acetate 15-18 part; Dimethylbenzene 15-18 part; DAA 20-30 part; Silicon dioxide powder or improved silica powder 2.5-5.5 part; Dimethicone 1.5-2.5 part; Leveling auxiliary agent 1.5-2.5 part; Catalyst 0.05-0.5 part;
The curing component is mixed by the raw material of following weight portion: TDI performed polymer 10-15 part, TDI addition product 5-8 part; Butyl acetate 5-10 part; DAA 15-20 part; Dehydrating agent 0.5-2.5 part.
According to further embodiment of the present invention: the weight average molecular weight of described polyester polyol resin is 1000 ~ 4500g/mol.The hydroxyl value of polyester polyol resin is 40 ~ 200mgKOH/g, acid number≤0.5mgKOH/g, and viscosity is 8000 ~ 20000mPas.Preferably, contain polyether segment in the main chain of polyester polyol resin, and the mass content of polyether segment in described polyester polyol resin is 10% ~ 90%.
Preferably, the mass content of polyether segment in described polyester polyol resin is 30% ~ 60%.
Polyester polyol resin of the present invention can prepare by the synthetic technology of this area routine.According to a specific embodiment of the present invention: at first obtain polyether polyol, then make itself and binary acid reaction obtain preliminary condensation polymer, add again the dihydroxylic alcohols monomer for example Isopropanediol continue reaction and get final product.More specifically, polyether polyol can for example be poly(propylene oxide), poly(ethylene oxide) or the copolymer of the two, and the weight average molecular weight of polyether polyol can be for example 200 ~ 1000g/mol.Can regulate and control the content of polyether block in the polyester polyol resin by the molecular weight of regulating polyether polyol.The example of binary acid has glutaric acid, hexanedioic acid etc., wherein preferred adipic acid.The reaction of polyether polyol and binary acid is preferably for example carried out in the presence of the p-methyl benzenesulfonic acid at esterification catalyst.
The present invention, the catalyst described in the finishing agent can be for being selected from one or more in methyl diethanolamine, dimethylethanolamine, triethylenediamine, N.N-dimethyl cyclohexyl amine, N-methylmorpholine, dibutyl tin laurate, dibutyltin diacetate, stannous octoate, zinc naphthenate, cobalt naphthenate, lead naphthenate, tributylphosphine and the triethyl phosphine.
The particle diameter of silicon dioxide powder of the present invention or improved silica powder is preferably 10nm-10 μ m.Described improved silica powder is preferably polysiloxane-modified silicon dioxide powder.
Dehydrating agent of the present invention or claim absorbent, leveling auxiliary agent all can be commercially available, dehydrating agent is the active different oxygen acid esters compound of simple function group, TI for example, BF-5, OF.Leveling auxiliary agent has for example BYK-370, BYK-331 etc.
In the polyurethane curing agent of the present invention, the TDI performed polymer can be polyethers/TDI performed polymer and polytetrahydrofuran diol/TDI performed polymer; The TDI addition product can be TDI-TMP addition product (namely 3 TDI molecule and a hydroxymethyl-propane (TMP) molecule addition product) or TDI tripolymer, Bayer DESMODUR series for example, Japanese CORONATE series.
The another technical scheme that the present invention takes is: a kind of two component cloudy surface skinfeel finishing agents of above-mentioned use for synthetic leather of taking carry out the surface-treated method to synthetic leather: after 1:0.8 ~ 1.2 mix by weight proportion with the curing component with described matrix component, be coated on the surface of synthetic leather, then 80 ~ 140 ℃ of lower bakings 1 ~ 5 minute.
Described coating can be taked for example roller coat of this area mode commonly used, spraying etc., wherein preferred roller coat.
Because the employing of technique scheme, the present invention compared with prior art has the following advantages:
Cloudy surface skinfeel treatment agent formula of the present invention is reasonable in design, can make the synthetic leather face obtain very fine and smooth, the dermatoid sense of touch of class after the use; Simultaneously, also make synthetic leather surface gloss low and deep, style is simple and unsophisticated, and kishke feel is extremely strong.In addition, the preparation of cloudy surface skinfeel finishing agent of the present invention and use are simple.
The specific embodiment
The present invention will be further described in detail below in conjunction with specific embodiment, but the invention is not restricted to following examples.
Embodiment 1
This example provides a kind of use for synthetic leather two component cloudy surface skinfeel finishing agents, and its composition of raw materials is referring to table 1, wherein:
The hydroxyl value of polyester polyol resin is 56mgKOH/g, and acid number is 0.1mgKOH/g, and viscosity is 16000mPas, and weight average molecular weight is 3500g/mol, and wherein the polyether segment mass content is 30%.
The improved silica powder is polysiloxane-modified silicon dioxide powder, and particle diameter is 150nm, available from Degussa; The TDI performed polymer is polyethers/TDI performed polymer; The TDI addition product is Bayer Desmodur L75; Catalyst is two laurate, and dibutyl tin, leveling auxiliary agent are DYK-370; Dehydrating agent is BF-5.
Each material component that consists of the matrix component is joined in the high-speed stirred still by proportioning, stir and namely get the matrix component; Mix by proportioning consisting of each raw material that solidifies component, namely get the curing component.
The property indices of cloudy surface skinfeel finishing agent is referring to table 2.
Embodiment 2
This example provides a kind of use for synthetic leather two component cloudy surface skinfeel finishing agents, and its composition of raw materials is referring to table 1, wherein:
The hydroxyl value of polyester polyol resin is 112mgKOH/g, and acid number is 0.08mgKOH/g, and viscosity is 10000mPas, and weight average molecular weight is 1800g/mol, and wherein the polyether segment mass content is 40%.
The improved silica powder is polysiloxane-modified silicon dioxide powder, and particle diameter is 80nm, available from Degussa; Polyurethane curing agent TDI performed polymer is polyethers/TDI performed polymer, and the TDI addition product is Bayer DesmodurN-F5; Catalyst is two acetic acid, dibutyl tin; Leveling auxiliary agent is BYK-331; Dehydrating agent is TI.
Each material component that consists of the matrix component is joined in the high-speed stirred still by proportioning, stir and namely get the matrix component; Mix by proportioning consisting of each raw material that solidifies component, namely get the curing component.
The property indices of cloudy surface skinfeel finishing agent is referring to table 2.
Embodiment 3
This example provides a kind of use for synthetic leather two component cloudy surface skinfeel finishing agents, and its composition of raw materials is referring to table 1, wherein:
The hydroxyl value of polyester polyol resin is 86mgKOH/g, and acid number is 0.1mgKOH/g, and viscosity is 12000mPas, and weight average molecular weight is 2000g/mol, and wherein the polyether segment mass content is 35%.
The improved silica powder is polysiloxane-modified silicon dioxide powder, and particle diameter is 120nm, available from Degussa; Polyurethane curing agent is the poly-tetrahydrochysene flavor glycol/TDI performed polymer of muttering, and the TDI addition product is Japanese CORONATE HX-90B; Catalyst is stannous octoate; Leveling auxiliary agent is BYK-370; Dehydrating agent BF-5.
Each material component that consists of the matrix component is joined in the high-speed stirred still by proportioning, stir and namely get the matrix component; Mix by proportioning consisting of each raw material that solidifies component, namely get the curing component.
The property indices of cloudy surface skinfeel finishing agent is referring to table 2.
Embodiment 4
This example provides a kind of use for synthetic leather two component cloudy surface skinfeel finishing agents, and its composition of raw materials is referring to table 1, wherein:
The hydroxyl value of polyester polyol resin is 140mgKOH/g, and acid number is 0.06mgKOH/g, and viscosity is 8000mPas, and weight average molecular weight is 1200g, and wherein the polyether segment mass content is 60%.
The improved silica powder is polysiloxane-modified silicon dioxide powder, and particle diameter is 60um, available from Degussa; Polyurethane curing agent is the TDI performed polymer, is polyethers/TDI performed polymer, and the TDI addition product is Japanese CORONATE SC-75LT; Catalyst is two laurate, dibutyl tin; Leveling auxiliary agent is BYK-331; Dehydrating agent is OF.
Each material component that consists of the matrix component is joined in the high-speed stirred still by proportioning, stir and namely get the matrix component; Mix by proportioning consisting of each raw material that solidifies component, namely get the curing component.
The property indices of cloudy surface skinfeel finishing agent is referring to table 2.
The composition of raw materials of the two component cloudy surface skinfeel finishing agents of the use for synthetic leather of embodiment 1 ~ 4
The technical indicator of the two component cloudy surface skinfeel finishing agents of the use for synthetic leather of table 2 embodiment 1~4
Embodiment 5
This example provides a kind of employing according to the two component cloudy surface skinfeel finishing agents of the use for synthetic leather of embodiment 1 method preparation synthetic leather to be carried out the surface-treated method, and is specific as follows: after matrix component and curing component are mixed by weight 1:1.02, with 70g/m
2The consumption roller coat in synthetic leather surface, in 100 ℃ of lower bakings 2 minutes.Synthetic leather lustrous surface after treatment is low and deep, sense of touch very fine and smooth (the dermatoid sense of touch of class), and style is simple and unsophisticated, and kishke feel is very strong.
Embodiment 6 ~ 7
Embodiment 6 ~ 7 provides respectively the two component cloudy surface skinfeel finishing agents of use for synthetic leather that adopt according to the method preparation of embodiment 2 ~ 3 that synthetic leather is carried out the surface-treated method, it is specific as follows: after 1:1.1 mixes by weight with the curing component with the matrix component, consumption roller coat with 70g/m2 was surperficial in synthetic leather, in 80 ℃ of lower bakings 5 minutes.Synthetic leather lustrous surface after treatment is low and deep, sense of touch very fine and smooth (the dermatoid sense of touch of class), and style is simple and unsophisticated, and kishke feel is very strong.
Embodiment 8
This example provides the two component cloudy surface skinfeel finishing agents of use for synthetic leather that adopt according to the method preparation of embodiment 4 that synthetic leather is carried out the surface-treated method, and is specific as follows: with the matrix component with after solidifying component and mixing by weight 1:0.9, with 70g/m
2The consumption roller coat in synthetic leather surface, in 120 ℃ of lower bakings 2 minutes.Synthetic leather lustrous surface after treatment is low and deep, sense of touch very fine and smooth (the dermatoid sense of touch of class), and style is simple and unsophisticated, and kishke feel is very strong.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (10)
1. two component cloudy surface skinfeel finishing agents of a use for synthetic leather is characterized in that: it comprises the matrix component of independent packaging and solidifies component, wherein:
The matrix component is mixed by the raw material of following weight portion: polyester polyol resin 25-35 part; Butyl acetate 15-18 part; Dimethylbenzene 15-18 part; DAA 20-30 part; Silicon dioxide powder or improved silica powder 2.5-5.5 part; Dimethicone 1.5-2.5 part; Leveling auxiliary agent 1.5-2.5 part; Catalyst 0.05-0.5 part;
The curing component is mixed by the raw material of following weight portion: TDI performed polymer 10-15 part, TDI addition product 5-8 part; Butyl acetate 5-10 part; DAA 15-20 part; Dehydrating agent 0.5-2.5 part.
2. two component cloudy surface skinfeel finishing agents of use for synthetic leather according to claim 1, it is characterized in that: the weight average molecular weight of described polyester polyol resin is 1000 ~ 4500g/mol.
3. two component cloudy surface skinfeel finishing agents of use for synthetic leather according to claim 2, it is characterized in that: the hydroxyl value of described polyester polyol resin is 40 ~ 200mgKOH/g, acid number≤0.5mgKOH/g, viscosity is 8000 ~ 25000 mPas.
4. according to claim 1 and 2 or the two component cloudy surface skinfeel finishing agents of 3 described use for synthetic leather, it is characterized in that: contain polyether segment in the main chain of described polyester polyol resin, and the mass content of polyether segment in described polyester polyol resin is 10% ~ 90%.
5. two component cloudy surface skinfeel finishing agents of use for synthetic leather according to claim 1, it is characterized in that: described catalyst is one or more that are selected from methyl diethanolamine, dimethylethanolamine, triethylenediamine, N.N-dimethyl cyclohexyl amine, N-methylmorpholine, dibutyl tin laurate, dibutyltin diacetate, stannous octoate, zinc naphthenate, cobalt naphthenate, lead naphthenate, tributylphosphine and the triethyl phosphine.
6. two component cloudy surface skinfeel finishing agents of use for synthetic leather according to claim 1, it is characterized in that: the particle diameter of described silicon dioxide powder or improved silica powder is 10nm-10 μ m.
7. according to claim 1 or the two component cloudy surface skinfeel finishing agents of 6 described use for synthetic leather, it is characterized in that: described improved silica powder is polysiloxane-modified silicon dioxide powder.
8. two component cloudy surface skinfeel finishing agents of use for synthetic leather according to claim 1, it is characterized in that: described TDI performed polymer is polyethers/TDI performed polymer and polytetrahydrofuran diol/TDI performed polymer; The TDI addition product is TDI-TMP addition product or TDI tripolymer.
9. two component cloudy surface skinfeel finishing agents of use for synthetic leather according to claim 1, it is characterized in that: described dehydrating agent is the active different oxygen acid esters compound of simple function group.
10. take in the claim 1 to 9 the two component cloudy surface skinfeel finishing agents of the described use for synthetic leather of each claim that synthetic leather is carried out the surface-treated method for one kind, it is characterized in that: after 1:0.8 ~ 1.2 mix by weight proportion with the curing component with described matrix component, be coated on the surface of synthetic leather, then 80 ~ 140 ℃ of lower bakings 1 ~ 5 minute.
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CN101457120A (en) * | 2008-12-10 | 2009-06-17 | 深圳市嘉卓成科技发展有限公司 | Double-component polyurethane coating and production method and construction method |
CN102002313A (en) * | 2009-09-03 | 2011-04-06 | 澳达树熊涂料(惠州)有限公司 | Solvent-type double-component polyurethane (PU) high-clearness wear-resistant matte varnish |
CN102533200A (en) * | 2012-02-29 | 2012-07-04 | 广州睿腾化工产品有限公司 | Bi-component polyurethane adhesive |
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Patent Citations (7)
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CN1085586A (en) * | 1990-12-27 | 1994-04-20 | 上海医疗器械研究所 | Simulated leather primer composition and preparation method thereof |
CN1067442A (en) * | 1991-06-04 | 1992-12-30 | 浙江省三门聚氨酯制品厂 | The production method of double-component polyurethane decorative paint for leather |
US20050096451A1 (en) * | 2003-10-09 | 2005-05-05 | Degussa Ag | High-reactivity liquid polyurethane systems which contain uretdione groups and can be cured at a low temperature |
CN1699485A (en) * | 2004-05-17 | 2005-11-23 | 陈日云 | Solvent type double-component PU transparent high-gloss woodenware paint |
CN101457120A (en) * | 2008-12-10 | 2009-06-17 | 深圳市嘉卓成科技发展有限公司 | Double-component polyurethane coating and production method and construction method |
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