The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1993
Filed:
May. 01, 1992
Applicant:
Inventors:
Assignee:
Mitsubishi Petrochemical Company Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526127 ; 526160 ; 526161 ; 526170 ; 526172 ; 5263482 ; 502108 ;
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: