CN103031732A - Preparation method of waterborne polyurethane leather glue - Google Patents
Preparation method of waterborne polyurethane leather glue Download PDFInfo
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- CN103031732A CN103031732A CN2012105218846A CN201210521884A CN103031732A CN 103031732 A CN103031732 A CN 103031732A CN 2012105218846 A CN2012105218846 A CN 2012105218846A CN 201210521884 A CN201210521884 A CN 201210521884A CN 103031732 A CN103031732 A CN 103031732A
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- polyurethane leather
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- leather glue
- dmpa
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- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a preparation method of waterborne polyurethane leather glue. The waterborne polyurethane leather glue is prepared by preparing a prepolymer based on isophorone diisocyanate (IPDI), polycrylactone 1000 (PCL1000), propylene glycol (PG) and dimethylol propionic acid (DMPA) as raw materials; modifying the prepolymer by adding a proper amount of carboxyl butadiene-styrene rubber water emulsion; adding triethylamine and carrying out a neutralization reaction to produce salt; and adding a proper amount of de-ionized water. The waterborne polyurethane leather glue disclosed by the invention has the advantages of high solid content, good binding power, strong environmental protection property and the like.
Description
Technical field
The present invention relates to a kind of preparation method of aqueous polyurethane leather glue, belong to chemical field.
Technical background
The application of polyurethane material has covered production, various fields of recent life, plays an important role in economic development.But this material still exists, and solid content is not high enough, adhesion strength and the dissatisfactory shortcoming of mechanical property, and the market price is higher, in actual use, still has the deficiencies such as a small amount of organic solvent.Therefore water-base polyurethane material in the research and development application process, still is necessary to further investigate and improve.
Therefore must adopt the method for the aqueous polyurethane of modification, so that the product that makes has higher solid content, caking property is good, the feature of environmental protection is strong.This patent adopts output abundant, cheap, and to waterborne polyurethane modified, blend carboxy styrene-butadiene rubber aqueous emulsion improves the solid content of adhesive with this to the glucose with natural biological degradation property, improves environmental-protecting performance and mechanical property as crosslinking agent.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of aqueous polyurethane leather glue, the aqueous polyurethane that obtains has that solid content is high, cohesive force reaches well the advantages such as the feature of environmental protection is strong.
For realizing above purpose, the preparation method of a kind of aqueous polyurethane leather glue of the present invention, its step is specially:
(1) take isophorone diisocyanate (IPDI), polycaprolactone glycol (PCL1000), glucose (PG), dihydromethyl propionic acid (DMPA) as raw material prepares performed polymer, reacts 2h.
(2) add carboxy styrene-butadiene rubber aqueous emulsion modification performed polymer, reaction 50min.
(3) be cooled to 40 ℃, add triethylamine and carry out neutralization reaction generation salt, reaction 3-4min.
(4) add entry and carry out emulsification 60min, obtained the aqueous polyurethane leather glue.
The proportioning of performed polymer raw material is in the step (1): the mol ratio of IPDI and PCL1000, PG, DMPA is 1.2:1-1.3:1, and PG accounts for the 2%-3% of performed polymer quality, and DMPA accounts for the 5%-6% of performed polymer quality.
The carboxy styrene-butadiene rubber aqueous emulsion accounts for the 30%-35% of performed polymer quality in the step (2).
The amount of substance of triethylamine is identical with the amount of substance of DMPA in the step (3).
The consumption of the middle water of step (4) is 2 times of performed polymer gross mass.
The beneficial effect that the present invention produces is, this patent adopts output abundant, and cheap, the glucose with natural biological degradation property carries out modification as crosslinking agent to aqueous polyurethane.In order further to improve the solid content of aqueous polyurethane leather glue, increase just viscous force and shortening hardening time and reduction cost, adopt carboxy styrene-butadiene rubber aqueous emulsion and performed polymer blending and modifying, the leather glue solid content that makes is high, the feature of environmental protection is strong, mechanical property good.
Embodiment
Embodiment 1:
Take isophorone diisocyanate (IPDI), polycaprolactone glycol (PCL1000), glucose (PG), dihydromethyl propionic acid (DMPA) as raw material prepares performed polymer, react 2h.The mol ratio of IPDI and PCL1000, PG, DMPA is 1.2:1, and PG accounts for 2% of performed polymer quality, and DMPA accounts for 5% of performed polymer quality.Add carboxy styrene-butadiene rubber aqueous emulsion modification performed polymer, the carboxy styrene-butadiene rubber aqueous emulsion accounts for 35% of performed polymer quality, reaction 50min.Be cooled to 40 ℃, add triethylamine and carry out neutralization reaction generation salt, the amount of substance of triethylamine is identical with the amount of substance of DMPA, reaction 3min.Add entry and carry out emulsification 60min, the consumption of water is 2 times of performed polymer gross mass, has obtained the aqueous polyurethane leather glue.
Embodiment 2:
Take isophorone diisocyanate (IPDI), polycaprolactone glycol (PCL1000), glucose (PG), dihydromethyl propionic acid (DMPA) as raw material prepares performed polymer, react 2h.The mol ratio of IPDI and PCL1000, PG, DMPA is 1.3:1, and PG accounts for 3% of performed polymer quality, and DMPA accounts for 6% of performed polymer quality.Add carboxy styrene-butadiene rubber aqueous emulsion modification performed polymer, the carboxy styrene-butadiene rubber aqueous emulsion accounts for 30% of performed polymer quality, reaction 50min.Be cooled to 40 ℃, add triethylamine and carry out neutralization reaction generation salt, the amount of substance of triethylamine is identical with the amount of substance of DMPA, reaction 3min.Add entry and carry out emulsification 60min, the consumption of water is 2 times of performed polymer gross mass, has obtained the aqueous polyurethane leather glue.
Claims (5)
1. the preparation method of an aqueous polyurethane leather glue, it is characterized in that: step is as follows:
(1) take isophorone diisocyanate (IPDI), polycaprolactone glycol (PCL1000), glucose (PG), dihydromethyl propionic acid (DMPA) as raw material prepares performed polymer, reacts 2h;
(2) add carboxy styrene-butadiene rubber aqueous emulsion modification performed polymer, reaction 50min;
(3) be cooled to 40 ℃, add triethylamine and carry out neutralization reaction generation salt, reaction 3-4min;
(4) add entry and carry out emulsification 60min, obtained the aqueous polyurethane leather glue.
2. the preparation method of a kind of aqueous polyurethane leather glue as claimed in claim 1, it is characterized in that: the proportioning of performed polymer raw material is in the described step (1): the mol ratio of IPDI and PCL1000, PG, DMPA is 1.2:1-1.3:1, PG accounts for the 2%-3% of performed polymer quality, and DMPA accounts for the 5%-6% of performed polymer quality.
3. the preparation method of a kind of aqueous polyurethane leather glue as claimed in claim 1 is characterized in that: the carboxy styrene-butadiene rubber aqueous emulsion accounts for the 30%-35% of performed polymer quality in the described step (2).
4. the preparation method of a kind of aqueous polyurethane leather glue as claimed in claim 1 is characterized in that: the amount of substance of triethylamine is identical with the amount of substance of DMPA in the described step (3).
5. the preparation method of a kind of aqueous polyurethane leather glue as claimed in claim 1 is characterized in that: the consumption of water is 2 times of performed polymer gross mass in the described step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105218846A CN103031732A (en) | 2012-12-07 | 2012-12-07 | Preparation method of waterborne polyurethane leather glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105218846A CN103031732A (en) | 2012-12-07 | 2012-12-07 | Preparation method of waterborne polyurethane leather glue |
Publications (1)
| Publication Number | Publication Date |
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| CN103031732A true CN103031732A (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012105218846A Pending CN103031732A (en) | 2012-12-07 | 2012-12-07 | Preparation method of waterborne polyurethane leather glue |
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| CN (1) | CN103031732A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479613A (en) * | 2014-12-17 | 2015-04-01 | 广东菲安妮皮具股份有限公司 | Environment-friendly leather adhesive |
| CN104479617A (en) * | 2014-12-17 | 2015-04-01 | 广东菲安妮皮具股份有限公司 | Leather adhesive with high scratch resistance |
| CN104497952A (en) * | 2014-12-17 | 2015-04-08 | 广东菲安妮皮具股份有限公司 | High-water-resistance leather adhesive |
| CN104497950A (en) * | 2014-12-17 | 2015-04-08 | 广东菲安妮皮具股份有限公司 | Leather adhesive and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838457A (en) * | 2010-05-11 | 2010-09-22 | 陕西科技大学 | Preparation method of high-solid content crosslinking polyurethane aqueous dispersoid |
| CN102604036A (en) * | 2012-03-09 | 2012-07-25 | 合肥工业大学 | Method for preparing glucose modified waterborne polyurethane emulsion |
-
2012
- 2012-12-07 CN CN2012105218846A patent/CN103031732A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838457A (en) * | 2010-05-11 | 2010-09-22 | 陕西科技大学 | Preparation method of high-solid content crosslinking polyurethane aqueous dispersoid |
| CN102604036A (en) * | 2012-03-09 | 2012-07-25 | 合肥工业大学 | Method for preparing glucose modified waterborne polyurethane emulsion |
Non-Patent Citations (1)
| Title |
|---|
| 李军，杨燕: "新型水性聚氨酯皮革黏合剂的制备及应用", 《中国皮革》, vol. 41, no. 3, 29 February 2012 (2012-02-29), pages 38 - 39 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479613A (en) * | 2014-12-17 | 2015-04-01 | 广东菲安妮皮具股份有限公司 | Environment-friendly leather adhesive |
| CN104479617A (en) * | 2014-12-17 | 2015-04-01 | 广东菲安妮皮具股份有限公司 | Leather adhesive with high scratch resistance |
| CN104497952A (en) * | 2014-12-17 | 2015-04-08 | 广东菲安妮皮具股份有限公司 | High-water-resistance leather adhesive |
| CN104497950A (en) * | 2014-12-17 | 2015-04-08 | 广东菲安妮皮具股份有限公司 | Leather adhesive and preparation method thereof |
| CN104497950B (en) * | 2014-12-17 | 2017-11-28 | 广东菲安妮皮具股份有限公司 | Leather adhesive and preparation method thereof |
| CN104479617B (en) * | 2014-12-17 | 2018-06-12 | 广东菲安妮皮具股份有限公司 | High resistance to scraping leather adhesive |
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Application publication date: 20130410 |