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:
Oct. 15, 1996
Filed:
May. 05, 1995
Applicant:
Inventors:
Paul K Hanna, East Windsor, NJ (US);
Andrzej M Piotrowski, Peekskill, NY (US);
Bert J Lommerts, Dieren, NL;
Steven R Leijenaar, Arnhem, NL;
Gerrit Hoentjen, Westervoort, NL;
Assignee:
Akzo Nobel NV, Arnhem, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08F / ;
U.S. Cl.
CPC ...
528392 ; 528271 ; 528480 ; 528490 ; 528495 ;
Abstract
Copolymers comprising carbon monoxide and ethylene contain at least one type of ketal structure and possess enhanced thermal stability so as to be useful in the melt processing of fibers. These novel copolymers, as well as known polyketones with ketal structures, can be formed by treating a copolymer of carbon monoxide and at least one olefin with a mixture of acid, such as a sulfonic acid, which acts as a catalyst or catalyst/reagent, and alcohol, such as a lower alkanol.