Production of polyanhydride epoxide prepolymer compositions

Details Production of polyanhydride epoxide prepolymer compositions Production of polyanhydride epoxide prepolymer compositions

1975-10-06

1977-07-05

Lieberman, Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 172, 260 174CL, 260 18PF, 260 37EP, 260 47EA, 260 59EP, 260 75EP, 526272, 526 15, C08L 6300

Patent

active

040340147

ABSTRACT:
Polyanhydrides are produced by a novel bulk polymerization procedure from maleic monomers and alkyl styrenes. The polyanhydrides, of low molecular weight and containing maleic monomer to alkyl styrene in a ratio greater than 1 to 1, are particularly useful as hardeners for epoxy resin-containing compositions and give rise to epoxy compositions which result in cured products exhibiting high heat distortion temperatures and excellent electrical and shelf life properties.

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patent: 2864808 (1958-12-01), Harris
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patent: 3271476 (1966-09-01), Widmer et al.
patent: 3380972 (1968-04-01), Le Blanc
patent: 3453246 (1969-07-01), Heilman
patent: 3558570 (1971-01-01), Rinno et al.
patent: 3755264 (1973-08-01), Testa
patent: 3766109 (1973-10-01), Pratt

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