Strong-permeation high-stripping non-freeze drying PU adhesion agent

An adhesive and high peeling technology, used in the field of adhesives, can solve the problems of poor cold resistance and heat resistance, low penetration and peel strength, and large amount of production enterprises, and achieve good cold resistance and heat resistance, penetration and Improved peel strength and moderate dryness

Inactive Publication Date: 2007-03-14
YIXING XIANGYE CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The PU adhesives on the market are not very good in the initial adhesion force and late adhesion force climbing performance. The curing time is generally up to 24 hours, the penetration force and peeling strength are low, easy to foam, and the viscosity is unstable. The amount used by the manufacturer is relatively large. The product is easy to yellow after use, and the cold and heat resistance is not strong

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1, strong penetration, high peeling and non-drying PU adhesive, by weight, 5 parts of toluene diisocyanate are mixed with 100 parts of polyester polyol with a hydroxyl value of 3000-3200 and an acid value of 0.1-0.2 after heating and melting Sour ester, 0.5 part of 1.4 butanediol, 100 parts of toluene carry out the product of polymerization reaction, when the toluene diisocyanate in every gram of reaction product is less than 0.006 gram, the reaction is terminated, and the polymerization reaction is dibutyl tin silicate in two Catalyst, the ratio of catalyst consumption to the total amount of reaction raw materials is 0.1:100, and the reaction temperature is 110°C. Because the viscosity of the reactant is high, toluene is added after the reaction to dilute the product viscosity.

Embodiment 2

[0008] Embodiment 2, reference example 1, the material weight ratio of polyreaction is to join 6 parts of toluene diisocyanate, 0.3 part of 1.4 butanediol, 90 toluene in 100 parts of polyester polyols, catalyst consumption and reaction raw material The ratio of parts by weight of the total amount is 0.15:100, and the reaction temperature is 90°C.

Embodiment 3

[0009] Embodiment 3, with reference to Example 1, the material weight proportion of polyreaction is to join 7 parts of toluene diisocyanate, 0.6 part of 1.4 butanediol, 110 toluene in 100 parts of polyester polyols, catalyst consumption and reaction raw material The ratio of parts by weight of the total amount is 0.2:100, and the reaction temperature is 105°C.

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PUM

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Abstract

The present invention is high permeating high stripping non-drying PU adhesive and belongs to the field of adhesive technology. The PU adhesive is prepared with polyester polyol with hydroxyl value 3000-3200 and acid number 0.1-0.2 in 100 weight portion, toluene diisocyanate in 5-7 weight portions, butanediol in 0.3-0.6 weight portions, and toluene in 80-110 weight portions, and through polymerization in the presence of dibutyl tine dilaurate as catalyst at 80-120 deg.c, with the polymerization reaction being terminated when the toluene diisocyanate content in each of gram reaction product become less than 0.006 g. Compared with available similar product, the PU adhesive has higher permeation, higher stripping strength, shorted curing time and other advantages.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a PU adhesive. technical background [0002] The PU adhesives on the market are not very good in the initial adhesion force and late adhesion force climbing performance. The curing time is generally up to 24 hours, the penetration force and peeling strength are low, easy to foam, and the viscosity is unstable. The amount used by the manufacturer is relatively large. The product is easy to yellow after use, and the cold and heat resistance is not strong. Contents of the invention [0003] The present invention is just to overcome the above-mentioned deficiencies, and provides a kind of PU adhesive, its penetrating power and peeling strength are greatly improved, and the usage amount of the production enterprise is reduced. Specifically, it is achieved in this way: strong penetration, high peeling and non-drying PU adhesive, which is characterized in that the adhesive is 100 parts by we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04
Inventor 翟军
Owner YIXING XIANGYE CHEM IND
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