Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-02-21
1991-06-04
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
528138, 528143, 528144, 528153, 528155, 525 68, 525137, 525138, 525139, 428241, 428495, C08G 1402, C08F 6100, D04B 100, B32B 2500
Patent
active
050215221
ABSTRACT:
An improved vulcanizable rubber composition of the type comprising (I) a rubber component selected from natural rubber, synthetic rubber or combinations thereof, and (II) a methylene donor compound which generates formaldehyde upon heating, and (III) a phenolic novolak resin type methylene acceptor compound is disclosed. The improvement comprises having at least ten mole percent of the phenolic groups of the phenolic novolak resin aralkylated with one or more compounds selected from the group consisting of styrene, alpha methyl styrene, beta methyl styrene, p-methyl styrene, alpha chloro styrene and vinyl naphthalenes.
REFERENCES:
patent: 3751331 (1973-08-01), Dane et al.
patent: 4703086 (1987-10-01), Yamamoto et al.
Durairaj Bojayan
Hood Richard T.
Lamars Robert M.
Peterson, Jr. Alex
Indspec Chemical Corporation
Kight III John
Kline Michael J.
Shelborne Kathryne E.
Zeh, Jr. Herbert J.
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