Process for polymerization of isoolefins and multiolefins

Details Process for polymerization of isoolefins and multiolefins Process for polymerization of isoolefins and multiolefins

1977-08-25

1979-05-15

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252431R, 526308, 526339, C08F 452, C08F 3606, C08F 3608

Patent

active

041549163

ABSTRACT:
The present invention relates to an improved solution process for 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 a catalyst at polymerization conditions (-50.degree. -to 100.degree. C.) wherein the improvement includes a hydrocarbon soluble catalyst being formed from the reaction product of a material of the formula:

REFERENCES:
patent: 3349065 (1967-10-01), Kennedy
patent: 3560458 (1971-02-01), Kennedy et al.
patent: 3835079 (1974-09-01), Scardiglia et al.
patent: 3850895 (1974-11-01), Priola et al.
patent: 3965078 (1976-06-01), Priola et al.
patent: 4029866 (1977-06-01), Kennedy
patent: 4038474 (1977-07-01), Kudo et al.
patent: 4039733 (1977-08-01), Kudo et al.
patent: 4081590 (1978-03-01), Kennedy

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