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:
Mar. 03, 1992
Filed:
Jul. 03, 1990
Harry R Allcock, State College, PA (US);
Ian Manners, State College, PA (US);
Gerhard Renner, State College, PA (US);
Oskar Nuyken, Munich, DE;
The Pennsylvania Research Corporation, University Park, PA (US);
Abstract
The synthesis of a new class of macromolecules, the polycarbophosphazenes, is reported. When heated at 120.degree. C., the cyclocarbophosphazene N.sub.3 P.sub.2 CCl.sub.5 undergoes ring-opening polymerization to afford the high polymeric polycarbophosphazene [N.sub.3 P.sub.2 CCl.sub.5 ].sub.n. The latter functions as a reactive macromolecular intermediate and undergoes halogen replacement with sodium phenoxide or aniline to afford the hydrolytically stable derivatives [N.sub.3 P.sub.2 C(OPh).sub.5 ].sub.n and [N.sub.3 P.sub.2 C(NHPh).sub.5 ].sub.n.