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:
Apr. 16, 2019
Filed:
Nov. 10, 2016
Sabic Global Technologies B.v., Bergen op Zoom, NL;
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Abstract
A phenylene ether oligomer is prepared by a process that includes partially converting 2,6-dimethylphenol to 3,3',5,5′-tetramethyl-4,4′-dihydroxybiphenyl and/or 3,3′,5,5′-tetramethyldiphenoquinone, converting the residual 2,6 dimethylphenol to poly(2,6-dimethyl-1,4-phenylene ether) and any 3,3′,5,5′-tetramethyl-4,4′-dihydroxybiphenyl to 3,3′,5,5′-tetramethyldiphenoquinone, and reacting the poly(2,6-dimethyl-1,4-phenylene ether) and 3,3′,5,5′-tetramethyldiphenoquinone to form the phenylene ether oligomer. The preparation can be conducted without isolation of intermediates.