Bislactone curing agents for epoxy resins and polymers obtained

Details Bislactone curing agents for epoxy resins and polymers obtained Bislactone curing agents for epoxy resins and polymers obtained

1990-03-29

1991-10-15

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 93, 528354, 549344, C08G 5916, C08G 5942

Patent

active

050575902

ABSTRACT:
Bislactone curing agents are used to cure and copolymerize with epoxy-based esins. Preferably, the copolymerization is performed using a tertiary amine catalyst. During cure, the bislactone ring opens and expands. The use of bislactones as curing agents for epoxy-based resins avoids the shrinkage and accompanying stresses which occur when epoxy-based resins are cured conventionally. The novel bislactone cured epoxy-based polymers according the present invention are less prone to failure than are conventional epoxy-based polymers. In a further embodiment, the epoxy is copolymerized with a novel bislactone monomer having at least one trifluoromethyl group. The resulting fluorinated copolymer has a reduced surface energy.

REFERENCES:
patent: 3294743 (1966-12-01), Mack
patent: 4379138 (1983-04-01), Pitt et al.
patent: 4492789 (1985-01-01), Nakashima et al.
patent: 4507460 (1985-03-01), Kikuchi et al.
patent: 4943610 (1990-07-01), Sayles

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