Mixed hydrocarbyloxide treated catalyst activated at different t

Details Mixed hydrocarbyloxide treated catalyst activated at different t Mixed hydrocarbyloxide treated catalyst activated at different t

1976-02-25

1977-05-24

Holler, Alan

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526350, C08F 424, C08F 452, C08F 1000

Patent

active

040257070

ABSTRACT:
Ethylene homopolymers and copolymers are made in a particle form process over a mixed catalyst comprising several portions of the same or different supported chromium components and metal promoted variations thereof in which each portion is activated at a different temperature, thereafter combined, and the composite, or each activated portion before being combined, is post treated with a hydrocarbyl aluminum hydrocarbyloxide. Broad molecular weight polymers are produced having excellent die swell characteristics and acceptable environmental stress cracking resistance and flow properties; this is achieved and while at the same time realizing high productivities.

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patent: 3956257 (1976-05-01), Hogan
patent: 3959178 (1976-05-01), Hogan

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