Phenol modified polymerization catalyst and polymerization proce

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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252429B, 252431R, 252431P, 526114, 526121, 526129, 526352, C08F 402, C08F 1002

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active

040656128

ABSTRACT:
An improved chromate ester catalyst useful for preparing, at relatively low temperatures, ethylene polymers which have a relatively lower molecular weight and which are more stable against oxidation is prepared by treating a silica supported chromate ester first with a phenol compound and then with a strong reducing agent.

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patent: 3493554 (1970-02-01), Rekers
patent: 3535297 (1970-10-01), Carrick et al.
patent: 3642749 (1972-02-01), Johnson et al.

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