Title:
PREPARATION OF RANDOM COPOLYMER
Document Type and Number:
Japanese Patent JPS5457586
Kind Code:
A
Abstract:
PURPOSE: To prepare economically a highly random copolymer by polymerizing a conjugated diolefin and a vinyl substituted aromatic hydrocarbon in the presence of a lithium secondary amide polymerization initiator and a specific randomizer.
CONSTITUTION: A rondom copolymer useful as rubbers for tire treads, etc. is prepared by polymerizing a conjugated diolefin, e.g. butadiene, etc., and a vinyl- substituted aromatic hydrocarbon, e.g. styrene, etc., in the presence of a lithium secondary amide as a polymerization initiator and an ortho-dialkoxybenzene, e.g. veratrol, etc., as a randomizer
Inventors:
CHIBA TAKASHI
KITSUNAI TOMOYUKI
MITSUTA YUTAKA
KITSUNAI TOMOYUKI
MITSUTA YUTAKA
Application Number:
JP12430877A
Publication Date:
May 09, 1979
Filing Date:
October 17, 1977
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK
International Classes:
C08F4/00; C08F4/06; C08F4/08; C08F212/06; C08F236/00; C08F236/04; C08F236/10; (IPC1-7): C08F4/08; C08F212/06; C08F236/04