Catalyst composition polymerization of isoolefins and multiolefi

Details Catalyst composition polymerization of isoolefins and multiolefi Catalyst composition polymerization of isoolefins and multiolefi

1979-02-01

1981-05-26

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429R, 252431R, C08F 452

Patent

active

042699550

ABSTRACT:
The present invention relates to improved catalyst compositions used in the formation of substantially gel-free copolymers and terpolymers of isobutylene and one or more dienes having an Mn of about less than 500,000, a mole % unsaturation of about 8 to about 45, and a polydispersity value of about 3 to about 30, wherein the mixture of isobutylene and diene monomers and a cosolvent are contacted with the catalyst composition at polymerization conditions (-50.degree. to -100.degree. C.) wherein the improvement includes the hydrocarbon soluble catalyst composition being formed from the reaction product of a material of the formula:

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patent: 3835097 (1974-09-01), Scandiglin et al.
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patent: 3965078 (1976-06-01), Priola et al.
patent: 4029866 (1977-06-01), Kennedy
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patent: 4039733 (1977-08-01), Kuda et al.
patent: 4081590 (1978-03-01), Kennedy
patent: 4151113 (1979-04-01), Thaler
patent: 4154916 (1979-05-01), Wagensommer et al.
patent: 4171414 (1979-10-01), Wagensommer et al.

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