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:
Nov. 29, 1983
Filed:
Mar. 24, 1982
Applicant:
Inventors:
Satoshi Numata, Yokohama, JP;
Kiyoshi Nakatani, Tokyo, JP;
Noboro Yamazaki, Nagoya, JP;
Teruo Yuasa, Nagoya, JP;
Assignee:
Mitsui Toatsu Chemicals Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568734 ;
Abstract
Indene compounds of the formula ##STR1## wherein X represents a hydrogen atom, a halogen atom, a hydroxyl group or a methyl group, and y is 0 or an integer of 1 to 3, are produced by either heat-decomposing indene compounds of the formula ##STR2## wherein X and y are as defined, in the presence of an acid or alkaline catalyst; or heat-decomposing isopropenyl phenols of the formula ##STR3## wherein X and y are as defined, or oligomers or polymers thereof in the presence of an acid catalyst. 5-Hydroxy-1,1,3-trimethyl-2-indene corresponding to formula (III) is a novel compound.