Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1983-01-24
1984-06-12
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524347, 525113, 525114, 525117, 528322, C08L 3904
Patent
active
044542836
ABSTRACT:
A novel bis-imide matrix resin system comprising 50 to 95 percent by weight of ethylenically unsaturated bis-imides, preferably a low melting mixture of a major portion of maleimides of aromatic amines such as toluene diamine and methylene dianiline with a minor portion of maleimide of an aliphatic amine such as trimethyl hexamethylene diamine and 5 percent to 35 percent by weight of a diunsaturated low-temperature cross-linking agent such as divinyl benzene which gels the bis-imide at low temperatures. This reduces stress between the matrix resin and the surface of the reinforcing fiber, thus reducing the tendency to form microcracks. Room temperature stability is improved by the presence of 0.5 to 5 percent of an oxidation inhibitor such as hydroquinone. The resin is useful as a matrix resin for high performance, graphite fiber reinforced composites.
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Beckely Don A.
Street Sidney W.
Anderson Harold D.
Hitco
Jacobs Marvin E.
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