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:
Jan. 22, 1980
Filed:
May. 01, 1978
Applicant:
Inventors:
Nicholas M Karayannis, Naperville, IL (US);
Habet M Khelghatian, Naperville, IL (US);
John S Skryantz, Naperville, IL (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
260 / ; 260 / ;
Abstract
Partial esters of polyhydroxy compounds and combinations thereof with organophosphorus compounds have been found to be effective stabilizers for polyolefins made in processes wherein such polymers are not subjected to extensive removal of process produced impurities during or subsequent to the polymerization process. Combinations of polypropylene produced in a solventless polymerization process and such partial esters are particularly suitable and show substantially improved stability in the presence of additional stabilizing compounds.