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

1985-08-09

1986-12-23

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528117, 528118, 528220, 528367, 528369, 548159, 548160, 548165, 548229, C08G 5902

Patent

active

046313311

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: 3789053 (1974-01-01), Clarke
patent: 4341693 (1982-07-01), Buxbaum
patent: 4350781 (1982-09-01), Rasshofer et al.

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