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:
Jul. 21, 1992
Filed:
Oct. 22, 1990
Applicant:
Inventors:
Roger de Jaeger, Chereng, FR;
Ghislaine D'Halluin, Hulluch, FR;
Guy Pagniez, Poey de l'Escar, FR;
Philippe Potin, Billere, FR;
Assignee:
Atochem, Puteaux, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C01B / ;
U.S. Cl.
CPC ...
528168 ; 423300 ; 525538 ;
Abstract
The polycondensation disrupting effects of the impurities in an impure N-dichlorophosphoryltrichlorophosphazene, P.sub.2 NOCl.sub.5, or oligomer thereof, are avoided by polycondensing such impure P.sub.2 NOCl.sub.5 into a high molecular weight uncrosslinked poly(dichlorophosphazene) in the presence of an effective impurity-inhibiting, polymerization-controlling amount of phosphorous pentachloride, PCl.sub.5.