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. 01, 1977
Filed:
Dec. 03, 1975
Bobby F Dannels, Grand Island, NY (US);
Alvin F Shepard, Grand Island, NY (US);
Hooker Chemicals & Plastics Corporation, Niagara Falls, NY (US);
Abstract
The present invention relates to polymer compositions and to a process of producing phenolic novolak resins having a high phosphorus content. It is known that phenolic novolak resins may be reacted with P.sub.2 O.sub.5. However, it has now been found that if the novolak has substantially entirely ortho-ortho linkage the amount of phosphorus, suitably in the form of P.sub.2 O.sub.5, P.sub.2 S.sub.5, P.sub.2 O.sub.3 or mixtures thereof, that may be reacted is greatly increased and the polymer produced has enhanced fire-retardant properties. The present polymers have a wide utility in the production of flame-retardant molding compositions and laminates.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile