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Bottom agent-free type single component moisture-curing polyurethane adhesive

A one-component, moisture-curing technology, applied in polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve problems such as difficulties

Active Publication Date: 2007-07-11
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some steel panels coated with anti-acid rain paint, high solid content paint and easy-maintenance paint, it is very difficult to repair without the help of primer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The polyurethane prepolymer is prepared as follows:

[0027] 385 grams of polyoxypropylene diols (average molecular weight 2000) and 560 grams of polyoxypropylene trihydric alcohols (average molecular weight 4500) were added into a reactor equipped with mechanical stirring, nitrogen protection and a heating device. Under nitrogen protection, heat the above mixture to 50°C, then add 160 g of diphenylmethane diisocyanate and 10 g of toluene diisocyanate, stir evenly, add 0.1 g of dibutyltin dilaurate, and stir for 2 hours.

[0028] The preparation method of adhesion promoter is as follows:

[0029] Mix 100 grams of mercaptopropyltrimethoxysilane with 100 grams of 1,6-hexamethylene diisocyanate trimer, and react at room temperature for 48 hours.

[0030] The preparation method of one-component moisture-curing polyurethane adhesive is:

[0031] Add 400 grams of polyurethane prepolymer, 50 grams of adhesion promoter, 200 grams of dioctyl phthalate, 450 grams of dry carbon ...

Embodiment 2

[0033] Except that mercaptopropyltrimethoxysilane was replaced by phenylaminopropyltrimethoxysilane, similar steps as in Example 1 were repeated to obtain a one-component moisture-curing polyurethane adhesive.

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PUM

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Abstract

The invention discloses a base agent-free single-component wet solidifying polyurethane binder, which is reacted by the following parts: polyurethane prepolymer, binding accelerant, 2,2-dimorphia diethyl ester and tin dibutyl dilaurate catalyst, elasticizer, fill, ultraviolet absorbent and stabilizer, wherein the single-component polyurethane binder possesses excellent binding property for binding and assembling automobile and other vehicle.

Description

technical field [0001] The invention relates to a single-component, moisture-curing, primer-free polyurethane adhesive and a preparation method thereof. This primer-free one-component moisture-curing polyurethane adhesive has excellent bonding properties to painted steel panels and ceramic-coated glass and can be used in the automotive industry, rail transport industry, container manufacturing, equipment manufacturing, air conditioning and Industrial fields such as ventilation devices, especially for window and windshield glazing of vehicles. Background technique [0002] One-component moisture-curing polyurethane adhesives based on polyurethane prepolymers are widely used in the window and windshield glazing process of automobiles and other vehicles. The polyurethane prepolymer is produced by the reaction of polyol compound and excess isocyanate and its polymer, and the prepolymer molecules are terminated with isocyanate groups. [0003] The generally used glazing process...

Claims

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Application Information

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IPC IPC(8): C09J175/04
Inventor 曾照坤李印柏
Owner TONSAN ADHESIVES INC
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