Polyisocyanate prepolymers prepared from rigid polyaromatic prec

Details Polyisocyanate prepolymers prepared from rigid polyaromatic prec Polyisocyanate prepolymers prepared from rigid polyaromatic prec

1989-03-30

1990-08-07

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521164, 521167, 521170, 521174, 528 59, 528 61, 528 65, 528 66, 528 76, 528 85, C08G 1810, C08G 1872

Patent

active

049468723

ABSTRACT:
A liquid prepolymer composition is disclosed which contains free isocyanate groups which is the reaction product of a stoichiometric excess of a polyisocyanate and an active hydrogen-containing compound which contains an internal rigid polyaromatic grouping. Polyurethane and/or polyurea polymers made from these prepolymer compositions are also disclosed.

REFERENCES:
patent: 3078257 (1963-02-01), Rinke et al.
patent: 3681290 (1972-08-01), Meckel et al.
patent: 4182830 (1980-01-01), Ford, Jr.
patent: 4289682 (1981-09-01), Peters

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