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:
Jun. 28, 1994
Filed:
Dec. 28, 1992
Janice E Sanders, Bound Brook, NJ (US);
George N Foster, Bloomsbury, NJ (US);
Edgar C Baker, Bridgewater, NJ (US);
Robert J Bernier, Flemington, NJ (US);
Union Carbide Chemicals & Plastics Technology Corporation, Danbury, CT (US);
Abstract
A finishing process for a polymer containing an active catalyst residue. Starting polymer has a crystallinity of less than 10 percent by weight and is maintained in an essentially oxygen free reaction zone at a temperature less than polymer sticking temperature. The polymer is stabilized and acids neutralized by adding 2, 6-di-tert-butyl-4-alkyl phenol and/or alkyl -3-(3-5 -di-tert-butyl-4-hydroxy phenyl)- propionate and zinc oxide, hydrotalcite, or a zeolite. Resulting polymer is then treated with catalyst deactivators including water, and then mixed with photo-oxidative stabilizers.