Polymeric compositions and composites prepared from spiroorthoca

Details Polymeric compositions and composites prepared from spiroorthoca Polymeric compositions and composites prepared from spiroorthoca

1996-09-16

2000-02-08

Wilson, Donald R.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528116, 528418, 525524, C08L 6300, C08L 6900

Patent

active

060229403

ABSTRACT:
Copolymer compositions are provided, including those which undergo less than .+-.1.0% bulk polymerization shrinkage and are useful as strain-free composites, high-strength adhesives, and precision castings. The copolymer compositions are formed from the cationic initiated polymerization of alicyclic spiroorthocarbonate monomers and epoxy resin monomers or comonomers. A preferred spiroorthocarbonate monomer is 2,3,8,9-di(tetramethylene)-1,5,7,11-tetraoxaspiro-[5,5]undecane. A preferred epoxy resin is a three component epoxy comonomer mixture of (i) diglycidyl ether of bisphenol A, (ii) 3,4-epoxycyclohexanemethyl-3,4-epoxycyclohexane carboxylate, and (iii) vinyl cyclohexene dioxide, preferably in a ratio of 5:4:1 by weight.

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