Thixotropic moisture cure urethane adhesive

Details Thixotropic moisture cure urethane adhesive Thixotropic moisture cure urethane adhesive

1996-05-20

1997-09-16

Clark, W. Robinson H.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525419, 525423, 525424, 525440, C08L 7504, C08L 7506, C08L 7508

Patent

active

056682220

ABSTRACT:
An adhesive composition which is a mixture of: (A) between about 30 and about 99 wt% of a first urethane adhesive component which is formed from a polyether polyol having a weight average molecular weight of between about 400 and about 10,000, the polyether polyol being end-capped with an isocyanate and having an isocyanate functionality between about 2.0 and about 3.0; (B) between about 1 and about 70 wt% of a second urethane adhesive component formed from a polyester diol or polyester diol mixture having hydroxyl functionalities of at least about 2, the polyester diol or polyester diol mixture being end-capped with an isocyanate and has a isocyanate functionality of between about 2 and about 2.3; and (C) between about 1 and about 70 wt% of unreacted isocyanate having an isocyanate functionality of between about 2 and about 3.

REFERENCES:
patent: 4999407 (1991-03-01), Gilch et al.
patent: 5185402 (1993-02-01), Fleming et al.

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