Two-component, primerless, organic phosphorus containing polyure

Details Two-component, primerless, organic phosphorus containing polyure Two-component, primerless, organic phosphorus containing polyure

1993-04-29

1994-08-23

Kight, III, John

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 61, 528 72, 528905, 4284231, C08G 1810

Patent

active

053409019

ABSTRACT:
A two component primerless modified urethane adhesive having good adhesion can be utilized to bond various substrates together such as sheet molded compounds. The prepolymer component of the modified urethane contains a reacted hydroxyl intermediate and has a significant excess of free isocyanate. The curative component contains a polyol curing agent, an amine sag resistant agent, a phosphorus-type adhesion promoter, and optionally molecular sieves. The equivalent ratio of free NCO groups in the prepolymer component to OH groups plus any amine groups in the curative component is generally from about 0.90 to about 1.25.

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