Primerless urethane adhesive compositions

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...

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528 72, 528905, 525 63, 524706, 4284228, 4284231, C08G 1810

Patent

active

056060033

ABSTRACT:
A two-component urethane adhesive is disclosed which requires no primer or pretreatment of the substrate. The adhesive in cured form has superior paint adhesion and can withstand high temperature bake cycles without substantial losses in adhesion to the substrate. The adhesive differs from prior adhesives in that essentially all of the high molecular weight polyols in the prepolymer component are the reaction product grafting reactions of acrylonitrile onto polypropylene polyols.

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European Search Report EP 95 30 6148 date Jul. 26, 1996.

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