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:
Sep. 14, 1993
Filed:
May. 16, 1991
Richard L Brandon, Chillicothe, OH (US);
Alexander R Pokora, Pickerington, OH (US);
The Mead Corporation, Dayton, OH (US);
Abstract
The present invention is directed to a fiber having improved chemical, thermal and structural stability, comprising an inner core material such as polyacrylonitrile of a first surface tension and an outer clad such as a cyanate ester of a polyphenol of a second surface tension lower than the first surface tension such that the outer layer material adheringly surrounds the inner core material and is crosslinkable therewith, and where, in a preferred embodiment, the polyacrylonitrile and the cyanate ester crosslink to form triazine; and a method and compound for the same; a novel crosslinked phenolic resin is also described.