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. 01, 2003
Filed:
Mar. 23, 1995
Applicant:
Inventor:
Joseph M. Kelley, Westfield, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/00 ;
U.S. Cl.
CPC ...
C08F 2/00 ;
Abstract
Atactic, amorphous, and tacky poly-alpha-olefins containing 100%-65% propylene and optionally up to about 35% ethylene are prepared by polymerizing the monomer(s) at 180-450° F. and at a pressure sufficient to substantially maintain the monomer(s) in the liquid phase. The polymerization is carried out in the presence of catalyst system consisting of (a) a transition metal halide selected from the group consisting of (i) a titanium trihalide and an aluminum alkyl, (ii) a titanium halide on a comminuted magnesium halide support, and (iii) a titanium halide sandwich compound and (b) aluminum alkyl as a co-catalyst.