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:
May. 09, 2000
Filed:
Feb. 25, 1998
William Franklin Burgoyne, Jr, Allentown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
This invention is a novel combination of crosslinking groups, which grafted to the backbone of thermally stable polymers, can be thermally induced to crosslink the polymers, affording a thermoset polymer system. This invention is particularly suited for high Tg polymers where the desired temperature for crosslinking reaction (cure) is in the range of 200-450.degree. C. This invention utilizes a graft technique to attach various diarylhydroxymethyl and 9-(9-hydroxyfluorenyl) groups to poly(arylene ether) polymer backbone. Upon thermal treatment of the modified (grafted) polymer at temperatures of 200-450.degree. C., crosslinking reactions take place, resulting in a thermoset polymer with increased Tg and elastic modulus above the Tg.