Vinyl ester resins prepared from urethane modified epoxy resin c

Details Vinyl ester resins prepared from urethane modified epoxy resin c Vinyl ester resins prepared from urethane modified epoxy resin c

1987-11-16

1988-11-22

Welsh, Maurice J.

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

Synthetic resins

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

525455, 525528, 528 73, 528 79, 528301, 528302, 528288, C08F 2602

Patent

active

047866934

ABSTRACT:
Urethane oligomer modified epoxy resin compositions are prepared by copolymerization of (A) an epoxy resin and (B) a urethane oligomer containing at least one oxyalkylene group and both polymerizable ethylenic unsaturation and isocyanate (isothiocyanate) groups in the presence of a suitable amount of a suitable catalyst for oxazolidinone (thiazolidinone) formation.
These modified epoxy resin compositions can be cured with conventional epoxy curing agents and they can be used to prepare vinyl ester resins.

REFERENCES:
patent: 3525779 (1970-08-01), Hawkins
patent: 3634327 (1972-01-01), Hawkins
patent: 3636133 (1972-01-01), Hawkins
patent: 3676397 (1972-07-01), Clarke
patent: 3687897 (1972-08-01), Clarke
patent: 3767624 (1973-10-01), Clarke
patent: 3789053 (1974-01-01), Clarke
patent: 3876618 (1975-04-01), Clarke
patent: 4486582 (1984-12-01), Hefner, Jr.
patent: 4742146 (1988-05-01), Hefner, Jr.

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