Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1979-08-22
1981-06-02
Hamrock, William F.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
260 336UA, 525217, 525250, 525271, 525314, 526340, 526335, 526284, 526346, 5263402, 526337, 525534, 525502, 525 92, 525152, 525132, C08F 448
Patent
active
042712823
ABSTRACT:
A process for producing carbo-chain homopolymers, block- and random copolymers of conjugated dienes and vinylaromatic monomers comprising polymerization of dienes, vinyl- or di-vinylaromatic monomers or copolymerization thereof in a medium of a hydrocarbon solvent at a temperature ranging from -30.degree. to +150.degree. C. in the presence of an organolithium catalyst of the formula R(Li).sub.x, wherein R is a hydrocarbon radical or a diene polymer, x is an integer of from 1 to 4, and a modifying additive which is a compound comprising a product of interaction between a phenolamine resin and an alkali metal and having the general formula: ##STR1## wherein n is an integer of from 1 to 10;
REFERENCES:
patent: 3294768 (1966-12-01), Wofford
patent: 3496154 (1970-02-01), Wofford
patent: 3718637 (1973-02-01), Hal asa
patent: 3759919 (1973-09-01), Dillenschneider
patent: 3954700 (1976-05-01), Farham
Judin Viktor P.
Kashkina Nadezhda K.
Korbanova Zinaida N.
Kosovtsev Vladimir V.
Kovtunenko Leonid V.
Adams Bruce L.
Burns Robert E.
Hamrock William F.
Lobato Emmanuel J.
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