Orthocarbonates

Details Orthocarbonates Orthocarbonates

1988-06-07

1989-08-08

Nielsen, Earl

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

Synthetic resins

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

528 96, 528104, 528110, 528116, 549334, C08G 5940, C07D49310

Patent

active

048553670

ABSTRACT:
Orthocarbonates of the formula I ##STR1## in which R is C.sub.1 -C.sub.4 alkyl, x is zero, 1 or 2, and A is a trivalent radical derived from an aliphatic triol by omitting the hydroxyl groups, the hydroxyl groups of the triol being bonded to different carbon atoms, are suitable as cocomponents in the curing of epoxy resins in that they limit the reduction in volume occurring during curing of epoxy resins. In addition, the cured resins are distinguished by increased flexural strength and impact strength.

REFERENCES:
patent: 3773790 (1973-11-01), Yoshimura et al.
patent: 3845046 (1974-10-01), Fauran et al.
patent: 4183862 (1980-01-01), Steiner
patent: 4368314 (1983-01-01), Endo et al.
patent: 4387215 (1983-06-01), Bailey
ACS Polymeric Materials Science and Engineering, vol. 54, p. 23.

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