Process for producing a propylene random copolymer

Details Process for producing a propylene random copolymer Process for producing a propylene random copolymer

1992-05-01

1993-07-06

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526161, 526170, 526172, 5263482, 502108, C08F 206, C08F 442

Patent

active

052255018

ABSTRACT:
A process for producing a propylene random copolymer comprising the repeating units (I)-(III) in quantities of 70-99.9 molar % of (I), 0-15 molar % and 0.1-30 molar %, respectively, which comprises contacting monomers which afford the following repeating units: ##STR1## m denotes 0 or an integer of 2-10, R.sub..alpha., R.sub..beta. and R.sub..gamma. independently represent a hydrogen atom or a hydrocarbyl group having 1-5 carbon atoms, at least one of R.sub..beta. and R.sub..gamma. being the hydrocarbyl group, and n denotes an integer of 1-5, with a polymerization catalyst to copolymerize, the polymerization catalyst comprising:

REFERENCES:
patent: 4874880 (1989-10-01), Miya et al.
patent: 4931417 (1990-06-01), Miya et al.

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