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
1985-12-05
1987-03-03
Lilling, Herbert J.
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...
524495, 524496, 525236, 525237, 526335, 526340, C08K 304, C08L 900, C08L 4700, C08F13600
Patent
active
046476148
ABSTRACT:
Disclosed is a diene elastomer composition especially suitable as tread rubber of tires which has low rolling resistance and high wet grip in combination. This elastomer composition contains a rubber material comprising an elastomeric polymer component of a butadiene polymer and/or a styrene-butadiene copolymer and a rubbery component. The elastomeric polymer is produced by using an organolithium compound as a polymerization initiator, and has a long chain end concentration (LCEC) of 1.5 or less as defined by the following formula: ##EQU1## wherein .alpha.: total number of terminal groups in long chain molecules per polymer,
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Imai Akio
Takao Hiroyoshi
Yoshida Nobuyuki
Lilling Herbert J.
Sumitomo Chemical Company Limited
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