Curable composition containing polyepoxide and polycarbodiimide

Details Curable composition containing polyepoxide and polycarbodiimide Curable composition containing polyepoxide and polycarbodiimide

1993-12-06

1995-02-28

Krass, Frederick

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

Synthetic resins

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

525123, 525124, 525127, 525128, 5253273, 525452, 525453, 525454, 525504, 525528, 528 45, 528 51, 528 52, 528 53, 528 55, 528 56, 528 73, C08G 5968, C08G 1822, C08L 7904

Patent

active

053938399

ABSTRACT:
The present invention provides a curable composition which employs the oxazolidineimine ring-forming reaction between an epoxide and a carbodiimide for curing and which cures under a mild condition in a short period of time with little side reaction to obtain a polycarbodiimide resin having good strength, heat resistance and processability. The curable composition of the present invention comprises (a) a polycarbodiimide, (b) a polyepoxide and (c) a zinc halide or a mixture of zinc halide and an onium salt as a catalyst.

REFERENCES:
patent: 3702839 (1972-11-01), Glasgow et al.
patent: 3793236 (1974-02-01), Ashida et al.
patent: 4022721 (1977-05-01), Ashida
patent: 4055522 (1977-10-01), Ashida et al.
patent: 5086152 (1992-02-01), Iwamoto
patent: 5126423 (1992-06-01), Iwamoto

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