Reactivity stabilization of polymethylene poly(phenylisocyanates

Details Reactivity stabilization of polymethylene poly(phenylisocyanates Reactivity stabilization of polymethylene poly(phenylisocyanates

1996-11-25

1998-03-10

Niland, Patrick

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

252182, 2521822, 25218221, 25218222, 25218229, 524107, 524109, 524114, 560331, C08K 300, C08K 320, C08L 7500, C07C24900

Patent

active

057262403

ABSTRACT:
This invention relates to mixtures of polymethylene poly(phenylisocyanate) blends with epoxides. The addition of the epoxide stabilizes the reactivity of the polyisocyanate blends such that it is no longer dependent on the acidity. It is now possible to form polyurethanes from these mixtures based on polymethylene poly(phenylisocyanate) blends wherein less catalyst is necessary.

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