Urethane-modified epoxy vinyl ester resin

Details Urethane-modified epoxy vinyl ester resin Urethane-modified epoxy vinyl ester resin

1996-08-09

1998-05-26

Sellers, Robert E.

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

Synthetic resins

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

428288, 428290, 523457, 523466, 523467, 525111, 525502, C08K 322, C08K 714, C08L 6310

Patent

active

057566003

ABSTRACT:
A composition useful as a sheet or bulk molding compound comprises a urethane-modified vinyl ester resin (A), or acid-addition vinyl ester resn (A') obtained by reacting the hydroxyl groups in (A) with a polybasic acid anhydride (B), and a double bond(s)-containing monomer (C), wherein (A) is prepared by reacting a vinyl ester resin (F) derived from the reaction of an epoxy resin (D) and an unsaturated monobasic acid (E), with a polyisocyanate (H) and, optionally, a hydroxyl group(s)-containing (meth)acrylate (G) in an isocyanate:hydroxyl groups equivalent ratio of from 0.01-1.2:1.

REFERENCES:
patent: 4293659 (1981-10-01), Svoboda
patent: 5304586 (1994-04-01), Hammesfahr et al.
patent: 5495029 (1996-02-01), Steinmann et al.
"SCRIMP Stars at SPI", Reinforced Plastics, vol. 4, pp. 62-68, Apr. 1996.

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