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. 19, 2002
Filed:
Aug. 23, 2000
Harry R. Allcock, State College, PA (US);
Walter R. Laredo, Somerville, NJ (US);
The Penn State Research Foundation, University Park, PA (US);
Abstract
A polymer composition comprising a polynorbonene backbone and pendant cyclotriphosphazene groups has been developed. The pendant cyclotriphosphazene group can have various substituents such as C1-C10 alkyl, C1-C10 haloalkyl, C3-C6 cycloalkyl, phenyl, substituted phenyl, aryl, —(CH CH OCH CH ) OCH in which n is a positive integer, aminoalkyl, alkoxyalkyl, phenoxyalkyl, aryloxyalkyl and amidoalkyl. The polynorbonene backbone can have substituents such as H, CH , X which is a halo group, and C2-C6 alkyl, C3-C6 cycloalkyl, C2-C6 alkoxy, phenoxy, and aryloxy. In a preferred embodiment, the pendant triphosphazene group can have either —CH CF , phenyl, 4-ethylcarboxylatophenyl, —CH CH , or —CH CH OCH CH OCH while the polynorbonene backbone can have H and low alkyl groups. The polyphosphazene compositions can be prepared readily via ring-opening-metathesis-polymerization of an olefin having norbornene structure with pendant cyclotriphosphazene groups. The polyphosphazene compositions disclosed are useful as elastomers, optical materials, electrically conductive materials, biomedical materials, compatibilizing agents, surfactants, additives for coatings, and as flame retardants.