High molecular weight high unsaturation C4-C10 isoolefin conjuga

Details High molecular weight high unsaturation C4-C10 isoolefin conjuga High molecular weight high unsaturation C4-C10 isoolefin conjuga

1977-04-14

1979-02-13

Levin, Stanford M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 318DR, 260 318M, 260 336AQ, 260 4247, 260888, 260889, 526337, 526339, C08F21012

Patent

active

041396952

ABSTRACT:
Substantially gel-free high unsaturation copolymers of isobutylene and methylcyclopentadiene and high unsaturation terpolymers of isobutylene cyclopentadiene and methylcyclopentadiene and terpolymers of isobutylene, isoprene and methylcyclopentadiene having a number average molecular weight of at least about 120,000 and a mole percent of unsaturation of at least 5% and the process for preparing said polymers which comprises carrying out the polymerization in a homogeneous phase, introducing to the system either an aluminum halide in a soluble form or a hydrocarbylaluminum dihalide and carrying the reaction out at a temperature of less than about -100.degree. C.

REFERENCES:
patent: 2521359 (1950-09-01), Garber
patent: 3080337 (1963-03-01), Minckler et al.
patent: 3808177 (1974-04-01), Thaler et al.
patent: 3928297 (1975-12-01), Thaler et al.

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