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:
Feb. 05, 1991
Filed:
May. 11, 1989
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Abstract
An industrially meritorious process for preparing aromatic polyhydric alcohol is disclosed. The process can give an extremely high conversion rate of raw material, i.e., aromatic carboxylic acid ester, and an extremely high selectivity to the objective compound. The process comprises catalytic hydrocracking of an aromatic carboxylic acid ester in which an improvement resides in the fact that an ester represented by the general formula Ar(COOR).sub.m, (CH.sub.2 OH).sub.n, (wherein Ar means an aromatic group, R is independently selected from normal and branched alkyl groups having at least 6 carbon atoms, m' means an integer of at least 1, n' means zero or a positive integer and m'+n' satisifies the relationship m'+n'.gtoreq.2) is used as raw material. An aromatic polyhydric alcohol is a very useful material, especially as a raw material for the preparation of polymeric substances having high heat resistance.