Epoxy polyurethane polyureas from epoxy resin, blocked isocyanat

Details Epoxy polyurethane polyureas from epoxy resin, blocked isocyanat Epoxy polyurethane polyureas from epoxy resin, blocked isocyanat

1989-05-12

1991-10-01

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525454, C08L 6302

Patent

active

050534653

ABSTRACT:
An epoxy polyurethane.polyurea product having improved impact properties is formed by reacting a curing amount of a polyetherpolyamine such as, for example, an amine terminated ethylene glycol with blends of epoxy resins combined with small amounts of blocked polyoxypropylene polyol/isocyanate.prepolymer. The products of the instant invention exhibit improvements over similar blends cured with other amine curing agents which result in brittle products.

REFERENCES:
patent: 3963680 (1976-06-01), O'Keefe et al.
patent: 4552933 (1985-11-01), Sellstrom et al.
patent: 4605690 (1986-08-01), DeBroy et al.
patent: 4623702 (1986-11-01), Grieves et al.
patent: 4704437 (1987-11-01), Kiessling

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