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. 12, 2006
Filed:
Dec. 24, 2003
Stephen T. Wellinghoff, San Antonio, TX (US);
Douglas P. Hanson, San Antonio, TX (US);
Stephen T. Wellinghoff, San Antonio, TX (US);
Douglas P. Hanson, San Antonio, TX (US);
Southwest Research Institute, San Antonio, TX (US);
Abstract
A method for making platform molecules comprising: reacting 4-alkoxy benzoyl chloride with R-hydroquinone under first conditions effective to produce bis 1,4[4-alkoxy-benzoyloxy]-R-phenylene comprising bis terminal alkoxy groups wherein Ris a bulky organic group; and, subjecting the bis 1,4[4-alkoxy-benzoyloxy]-R-phenylene to second conditions effective to selectively cleave the bis terminal alkoxy groups to produce a solution comprising complexes comprising diphenolic platform molecules comprising bis terminal hydroxyl groups, the second conditions also being effective to precipitate the complexes out of the solution.