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:
Nov. 13, 2001
Filed:
May. 20, 1996
Applicant:
Inventors:
Noëlle Berger, Ecully, FR;
Pierre Jay, Saint Didier aux Monts d'Or, FR;
Assignee:
Atofina, Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/01 ; C08K 5/10 ; C08K 5/11 ; C08K 5/12 ;
U.S. Cl.
CPC ...
C08K 5/01 ; C08K 5/10 ; C08K 5/11 ; C08K 5/12 ;
Abstract
The invention relates to a crosslinkable impregnating dielectric composition comprising a polydiene polyol, a polyisocyanate and a chemically inert liquid filler, (an insulating liquid) characterized in that a sufficient amount of the said liquid filler is used in order to maintain a viscosity of less than 50 mPa s at the impregnation temperature for a period at least equal to 1 day and in order to obtain a tans at 20° C. and at 50 Hz, after complete crosslinking, of less than 0.02. The invention also relates to a process for preparing the said composition.