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
1988-06-15
1997-01-14
Lovering, Richard 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...
4273855, 524483, 526160, 526285, C08F 3804, C08F 444, C08K 501, C08L 4900
Patent
active
055940587
ABSTRACT:
A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon--carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.
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Backlund Stephen J.
Olsen Robert E.
Reese Harlan F.
Aerojet - General Corporation
Lovering Richard D.
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