CN104449532A - High-adhesion leather coating binder - Google Patents
High-adhesion leather coating binder Download PDFInfo
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- CN104449532A CN104449532A CN201410777049.8A CN201410777049A CN104449532A CN 104449532 A CN104449532 A CN 104449532A CN 201410777049 A CN201410777049 A CN 201410777049A CN 104449532 A CN104449532 A CN 104449532A
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Abstract
The invention discloses a high-adhesion leather coating binder. The binder is prepared from the following raw materials in parts by weight: 20-50 parts of polyurethane prepolymer prepared by reacting isophorone diisocyanate and polydiethylene glycol adipate diol, 10-25 parts of neopentyl glycol, 1-5 parts of epoxy resin, 1-5 parts of a water-soluble thickening agent, 2-15 parts of 2,2-dimethylolpropionic acid, 1-6 parts of an acrylic copolymer, 40-120 parts of deionized water and 5-12 parts of carboxylated butadiene-styrene rubber. The high-adhesion leather coating binder is sprayed onto the surface of leather before surface treatment and is capable of forming a layer of protective film on the surface of the leather; meanwhile, due to excellent adhesive of the binder, the formed protective film is capable of better uniting the leather with the film layer formed by a surface treating agent, and equivalently, the protective coating of a double-layer structure is formed on the surface of the leather; the surface treating agent can be better fitted with the surface and the protection on the surface of the leather can be further enhanced, and the technical problem of insecure binding of the existing leather surface coating is solved.
Description
Technical field
Invention relates to a kind of leather adhesive, specifically a kind of high adhesion leather coating adhesive.
Background technology
Along with the development of technology, leatherware has achieved diversified production, has enriched the life of people.
Often occur because plasticizer appears in one's mind in leather surface in the process of leather manufacture, make surface greasy, the unfavorable condition such as to be clamminess occurs.For making the added value of leather increase, make it closer to the sensation of corium, need to be coated with layer of surface treatment agent at leather surface, the film coating formed by surface treatment agent increases the fastness to rubbing of leather, also plays the effect of protection simultaneously.When surface treatment, simply surface treatment agent is sprayed on leather surface often, and have ignored between surface treatment agent and leather whether there is good combination.
Existing leather surface treatment agent multi-solvent type, the use of organic solvent causes the pollution of environment, and the health of gas to producers that its solvent evaporates produces works the mischief.When combination between surface treatment agent and leather is not good; organic composition in the middle of surface treatment agent is easily separated out; add the harm to environment, also cannot realize the provide protection of leather surface simultaneously or give its good feel, special leatherware processing effect.
In the leatherware course of processing, the bonding of leather processing is an important operation, and leather adhesive have impact on the quality of leatherware.Existing leather adhesive commonly polyurethane binder.Polyurethane binder refers to the tackiness agent containing carbamate groups (-NHCOO-) or isocyanate group (-NCO) in molecular chain.Polyurethane binder is divided into polyisocyanates and the large class of urethane two, and containing isocyano-(-NCO) and carbamate groups (-NH-COO-) in polyisocyanate molecule chain, therefore polyurethane binder shows activity and the polarity of height.With the base material containing reactive hydrogen, as porous materials such as foam, plastics, timber, leather, fabric, paper, potteries, and the material of any surface finish such as metal, glass, rubber, plastics has excellent chemical adhesive power.
Polyurethane binder mainly contains solvent-borne type and water-based two class.The feature such as aqueous polyurethane adhesive has low VOC content, low or non-environmental-pollution, do not fire is the prior development direction of polyurethane binder.At present, aqueous polyurethane adhesive is adding man-hour for leather bonds, and its tack is low is also one of reason hindering its widespread use.
Summary of the invention
The object of this invention is to provide a kind of high adhesion leather coating adhesive, for before carrying out surface treatment, be sprayed at leather surface, solve the illusive technical problem of existing leather surface coating adhesion.
Technical scheme of the present invention is as follows: a kind of high adhesion leather coating adhesive, prepared by the raw material of following weight part: isophorone diisocyanate and polyethylene glycol adipate glycol react obtained base polyurethane prepolymer for use as 20 ~ 50 parts, neopentyl glycol 10 ~ 25 parts, epoxy resin 1 ~ 5 part, water-soluble thickener 1 ~ 5 part, 2,2-dimethylol propionic acid 2 ~ 15 parts, acrylic copolymer 1 ~ 6 part, deionized water 40 ~ 120 parts, carboxy styrene-butadiene rubber 5 ~ 12 parts.
The preparation of leather coating adhesive of the present invention adopts following steps:
(1) polyethylene glycol adipate glycol, isophorone diisocyanate are joined in there-necked flask according to the ratio of OH:NCO=1:2, pass into nitrogen, reactant is stirred, at 85 DEG C of reaction 1 ~ 2h, obtained base polyurethane prepolymer for use as; Add neopentyl glycol, continue reaction 0.5 ~ 1h;
(2) separately get reaction vessel, by 2,2-dimethylol propionic acid, 1/2nd the mixing of deionized water consumption, then add carboxy styrene-butadiene rubber, be warming up to 90 DEG C, reaction 15 ~ 20min, obtained mixed solution;
(3) after epoxy resin being heated to 100 ~ 110 DEG C, with 1/2nd hybrid reaction 5min of water-soluble thickener, acrylic copolymer, deionized water consumption;
(4) reaction system of step (1) stirs with rotating speed 400 ~ 600r/min, and instilled by the mixed solution of step (2) while stirring, control temperature is 1 ~ 2h 80 DEG C of instillation times, then adds the mixed solution of step (3), stirs 5min, namely obtains.
Described water-soluble thickener is polyurethane associative thickener TEGO ViscoPlus 3060 or Collacral LR 8475.Described acrylic copolymer BYK-380 or BYK-381.Described epoxy resin is liquid bisphenol A type epoxy resin.
The present invention is as follows relative to the beneficial effect of prior art:
(1) pass through epoxy resin, water-soluble thickener in formula, improve the viscosity of tackiness agent, increase the tack of tackiness agent, make it that there is good bonding force and the combination good with the organic composition in surface treatment agent;
(2) before surface treatment agent process is carried out to leather; this tackiness agent is sprayed to leather surface in advance; first can form layer protecting film to leather surface; simultaneously; due to the good bonding of this tackiness agent; the protective membrane formed; better the thin film layer that leather and surface treatment agent are formed can be combined; be equivalent to define at leather surface that there is bilayer structure supercoat; both surface treatment agent can have been made better to be fitted in surface, to have further increased again the protection to leather surface.
Embodiment
Be described in further details the present invention below by embodiment, these embodiments are only used for the present invention is described, do not limit the scope of the invention.
Embodiment 1 adopts following raw material: isophorone diisocyanate and polyethylene glycol adipate glycol react obtained base polyurethane prepolymer for use as 45 parts, neopentyl glycol 21 parts, liquid bisphenol A type epoxy resin 2 parts, polyurethane associative thickener TEGO ViscoPlus 30603 parts, 2,2-dimethylol propionic acid 11 parts, acrylic copolymer BYK-3803 part, deionized water 98 parts, carboxy styrene-butadiene rubber 6 parts, prepare tackiness agent of the present invention as follows:
(1) polyethylene glycol adipate glycol, isophorone diisocyanate are joined in there-necked flask according to the ratio of OH:NCO=1:2, pass into nitrogen, reactant is stirred, at 85 DEG C of reaction 2h, obtained base polyurethane prepolymer for use as; Add neopentyl glycol, continue reaction 1h;
(2) separately get reaction vessel, by 2,2-dimethylol propionic acid, 1/2nd the mixing of deionized water consumption, then add carboxy styrene-butadiene rubber, be warming up to 90 DEG C, reaction 15min, obtained mixed solution;
(3) after epoxy resin being heated to 110 DEG C, with 1/2nd hybrid reaction 5min of water-soluble thickener, acrylic copolymer, deionized water consumption;
(4) reaction system of step (1) stirred with rotating speed 600r/min, instilled by the mixed solution of step (2) while stirring, control temperature is 1h 80 DEG C of instillation times, then adds the mixed solution of step (3), stirs 5min, namely obtains.
Embodiment 2 adopts following raw material: isophorone diisocyanate and polyethylene glycol adipate glycol react obtained base polyurethane prepolymer for use as 45 parts, neopentyl glycol 18 parts, liquid bisphenol A type epoxy resin 5 parts, polyurethane associative thickener Collacral LR 8,475 3 parts, 2,2-dimethylol propionic acid 11 parts, acrylic copolymer BYK-381 6 parts, deionized water 110 parts, carboxy styrene-butadiene rubber 8 parts, prepare tackiness agent of the present invention as follows:
(1) polyethylene glycol adipate glycol, isophorone diisocyanate are joined in there-necked flask according to the ratio of OH:NCO=1:2, pass into nitrogen, reactant is stirred, at 85 DEG C of reaction 2h, obtained base polyurethane prepolymer for use as; Add neopentyl glycol, continue reaction 0.5h;
(2) separately get reaction vessel, by 2,2-dimethylol propionic acid, 1/2nd the mixing of deionized water consumption, then add carboxy styrene-butadiene rubber, be warming up to 90 DEG C, reaction 20min, obtained mixed solution;
(3) after epoxy resin being heated to 100 DEG C, with 1/2nd hybrid reaction 5min of water-soluble thickener, acrylic copolymer, deionized water consumption;
(4) reaction system of step (1) stirred with rotating speed 500r/min, instilled by the mixed solution of step (2) while stirring, control temperature is 2h 80 DEG C of instillation times, then adds the mixed solution of step (3), stirs 5min, namely obtains.
Claims (4)
1. a high adhesion leather coating adhesive, it is characterized in that: the raw material by following weight part: isophorone diisocyanate and polyethylene glycol adipate glycol react obtained base polyurethane prepolymer for use as 20 ~ 50 parts, neopentyl glycol 10 ~ 25 parts, epoxy resin 1 ~ 5 part, water-soluble thickener 1 ~ 5 part, 2,2-dimethylol propionic acid 2 ~ 15 parts, acrylic copolymer 1 ~ 6 part, deionized water 40 ~ 120 parts, carboxy styrene-butadiene rubber 5 ~ 12 parts, adopt following steps preparation:
(1) polyethylene glycol adipate glycol, isophorone diisocyanate are joined in there-necked flask according to the ratio of OH:NCO=1:2, pass into nitrogen, reactant is stirred, at 85 DEG C of reaction 1 ~ 2h, obtained base polyurethane prepolymer for use as; Add neopentyl glycol, continue reaction 0.5 ~ 1h;
(2) separately get reaction vessel, by 2,2-dimethylol propionic acid, 1/2nd the mixing of deionized water consumption, then add carboxy styrene-butadiene rubber, be warming up to 90 DEG C, reaction 15 ~ 20min, obtained mixed solution;
(3) after epoxy resin being heated to 100 ~ 110 DEG C, with 1/2nd hybrid reaction 5min of water-soluble thickener, acrylic copolymer, deionized water consumption;
(4) reaction system of step (1) stirs with rotating speed 400 ~ 600r/min, and instilled by the mixed solution of step (2) while stirring, control temperature is 1 ~ 2h 80 DEG C of instillation times, then adds the mixed solution of step (3), stirs 5min, namely obtains.
2. high adhesion leather coating adhesive according to claim 1, is characterized in that: described water-soluble thickener is polyurethane associative thickener TEGO ViscoPlus 3060 or Collacral LR 8475.
3. high adhesion leather coating adhesive according to claim 1, is characterized in that: described acrylic copolymer BYK-380 or BYK-381.
4. high adhesion leather coating adhesive according to claim 1, is characterized in that: described epoxy resin is liquid bisphenol A type epoxy resin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777049.8A CN104449532B (en) | 2014-12-17 | 2014-12-17 | High adhesiveness leather coating adhesive |
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| CN201410777049.8A CN104449532B (en) | 2014-12-17 | 2014-12-17 | High adhesiveness leather coating adhesive |
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| CN104449532A true CN104449532A (en) | 2015-03-25 |
| CN104449532B CN104449532B (en) | 2017-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238323A (en) * | 2015-09-25 | 2016-01-13 | 安徽大松树脂有限公司 | High peel strength adhesive for shoes |
| CN108903408A (en) * | 2018-07-19 | 2018-11-30 | 东莞市龙健电子有限公司 | A kind of box section corner and preparation method thereof coating leather |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348703A (en) * | 2008-06-20 | 2009-01-21 | 中山大学 | Aqueous polyurethane adhesive and preparation thereof |
| US20090240004A1 (en) * | 2006-09-29 | 2009-09-24 | Alois Maier | Functionalized polyurethane resin, method for the production thereof, and use thereof |
| CN101824294A (en) * | 2010-04-30 | 2010-09-08 | 安徽安大华泰新材料有限公司 | Preparation method of tetrabasic copolymerized waterborne polyurethane automotive interior adhesive |
| CN102408863A (en) * | 2011-11-01 | 2012-04-11 | 吴江市北厍盛源纺织品助剂厂 | Preparation method of water-based PU (polyurethane) adhesive for high-end PU leather |
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2014
- 2014-12-17 CN CN201410777049.8A patent/CN104449532B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090240004A1 (en) * | 2006-09-29 | 2009-09-24 | Alois Maier | Functionalized polyurethane resin, method for the production thereof, and use thereof |
| CN101348703A (en) * | 2008-06-20 | 2009-01-21 | 中山大学 | Aqueous polyurethane adhesive and preparation thereof |
| CN101824294A (en) * | 2010-04-30 | 2010-09-08 | 安徽安大华泰新材料有限公司 | Preparation method of tetrabasic copolymerized waterborne polyurethane automotive interior adhesive |
| CN102408863A (en) * | 2011-11-01 | 2012-04-11 | 吴江市北厍盛源纺织品助剂厂 | Preparation method of water-based PU (polyurethane) adhesive for high-end PU leather |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238323A (en) * | 2015-09-25 | 2016-01-13 | 安徽大松树脂有限公司 | High peel strength adhesive for shoes |
| CN108903408A (en) * | 2018-07-19 | 2018-11-30 | 东莞市龙健电子有限公司 | A kind of box section corner and preparation method thereof coating leather |
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| CN104449532B (en) | 2017-11-28 |
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