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:
May. 08, 1990
Filed:
Jun. 08, 1988
Applicant:
Inventors:
Nobutoshi Komori, Chiba, JP;
Hirokazu Nakazima, Chiba, JP;
Assignee:
Chisso Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524339 ; 524351 ; 524352 ; 524571 ; 524574 ; 524580 ; 524581 ; 524583 ; 5253317 ; 5253338 ; 525370 ;
Abstract
A process for producing a modified propylene polymer composition is disclosed, which comprises melt-kneading a propylene polymer having a considerable titanium or vanadium content as a catalyst residue and having incorporated therein a phenolic antioxidant in the presence of a radical generator in combination with a specific amount of a zinc salt of a carboxylic acid. The resulting modified propylene polymer composition exhibits freedom from coloring as well as improved moldability.