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. 09, 1990
Filed:
Dec. 04, 1987
Applicant:
Inventors:
Leonard E Gerlowski, Katy, TX (US);
John R Kastelic, Katy, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264234 ; 264235 ; 264237 ; 26433115 ; 264345 ; 264346 ; 264348 ;
Abstract
A process for preparing a melt processed polymer material having improved oxygen, water or carbon dioxide barrier properties wherein a quantity of a linear alternating polymer of carbon monoxide and at least one ethlenically unsaturated hydrocarbon is melt processed to form a film, heated to a temperature ranging from about 2.degree. C. to about 40.degree. C. above the melting point of the polymer, and cooling the heated melt processed film at a moderate rate between about 6.degree. C. and about 10.degree. C. per minute.