Use, as latent cross-linkers for epoxy resins, of compounds whic

Details Use, as latent cross-linkers for epoxy resins, of compounds whic Use, as latent cross-linkers for epoxy resins, of compounds whic

1986-10-03

1987-12-29

Nielsen, Earl

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

Synthetic resins

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

525523, 528 96, 548232, C08G 5914, C08G 5962, C07D26338

Patent

active

047162040

ABSTRACT:
2-(3H)-benzoxazolone and certain other benzo-N-heterocycles, as such or as their adduction products with epoxides, may be employed as organo-soluble, latent phenolic curing agents for epoxy resins. The phenolic hydroxyls are provided by rearrangement of the adduction products. Excellent shelf lives, pot lives, gel times and physical properties result.

REFERENCES:
patent: 3415901 (1968-12-01), Schramm et al.
patent: 3676397 (1972-07-01), Clarke
patent: 3687897 (1972-08-01), Clarke
patent: 3789053 (1974-01-01), Clarke
patent: 4341693 (1982-07-01), Buxbaum
patent: 4380781 (1982-09-01), Rasshofer et al.

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