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. 14, 1997
Filed:
Oct. 23, 1996
Applicant:
Inventors:
Frans W Tazelaar, Venlo, NL;
Peter R Markies, De Lijndrijver, NL;
Johannes A van den Reek, Eindhoven, NL;
Cornelius JM. van der Stappen, Nijmegen, NL;
Assignee:
Oce-Nederland, B.V., Venlo, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ; C07C / ;
U.S. Cl.
CPC ...
526312 ; 526247 ; 526279 ; 568677 ;
Abstract
The invention relates to a difunctional perfluoropolyether oil, prepared by reacting a perfluoropolyether diol oil having a weight average molecular weight (Mw) of 1500 to 3000 with a chain lengthener selected from the group consisting of diacid chlorides and difunctional diisocyanates, and to perfluoropolyether rubbers prepared from these chain-lengthened oils.