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:
Aug. 09, 1994
Filed:
Jan. 28, 1993
Applicant:
Inventors:
Fumiaki Oshimi, Yokohama, JP;
Susumu Kubota, Yokohama, JP;
Masami Enomoto, Yokohama, JP;
Yutaka Otsuki, Yokohama, JP;
Assignee:
Nippon Oil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528205 ; 528212 ; 528214 ; 568718 ; 568719 ; 568721 ; 568749 ;
Abstract
A method is provided for producing a phenolic resin represented by the formula (I) ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.2 is a divalent cyclic hydrocarbon residue having 5 to 18 carbon atoms, p is a number of from 0 to 10 and q is a number of 1 or 2. The method involves reacting a phenol with an unsaturated cyclic hydrocarbon compound having two or more carbon-carbon double bonding in the presence of an acid catalyst; and processing a resulting reaction product by a hydrotalcite compound represented by the formula (II)