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:
Dec. 16, 1997
Filed:
Apr. 26, 1995
Applicant:
Inventors:
Harry R Allcock, State College, PA (US);
Christopher T Morrissey, State College, PA (US);
Ian Manners, Oakville, CA;
Charles H Honeyman, University of Toronto, CA;
Assignees:
The Penn State Research Foundation, University Park, PA (US);
University of Toronto, Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528399 ; 528167 ; 528168 ; 528169 ; 528223 ; 528224 ; 528225 ; 528228 ; 528287 ; 525538 ;
Abstract
A process for the preparation of polyphosphazenes is provided that includes the cationic solution polymerization reaction of a phosphoranimine, using a main group or transition metal halide, or other appropriate halide salt, including a linear phosphazene salt of any chain length, or a preformed nonphosphazene polymer containing a main or transition metal chloride, as an initiator.