Adhesive compositions

Details Adhesive compositions Adhesive compositions

1986-01-29

1987-04-28

Welsh, Maurice J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 81, 524157, 524296, 524297, 524705, 524745, 524764, 524775, 528 49, 528 59, 528 76, 528 77, C08G 1810

Patent

active

046615423

ABSTRACT:
Pressure-sensitive adhesives which are mixed immediately prior to application, or need drying equipment tend to be expensive in use while those applied as hot melts tend to have poor heat resistance. According to the invention an adhesive composition curable by atmospheric moisture is provided, the composition comprising a prepolymer component with isocyanate functionality between 2.0 and 3.0 together with one or more polyetherurethane prepolymers having NCO groups available for reaction with water for chain extension, the cured adhesive composition having a glass transition temperature below 20.degree. C.

REFERENCES:
patent: 3437622 (1969-04-01), Dahl
patent: 3767040 (1973-10-01), Tushaus
patent: 3933725 (1976-01-01), Dearlove et al.

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