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:
Sep. 15, 1992
Filed:
Aug. 27, 1991
Applicant:
Inventors:
Yoshio Mori, Gifu, JP;
Makoto Watanabe, Tokai, JP;
Kishiro Azuma, Tokai, JP;
Shiro Kojima, Yokohama, JP;
Assignee:
Toagosei Chemical Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526220 ; 526217 ; 526312 ; 526320 ; 526321 ; 526326 ; 5263297 ; 526245 ;
Abstract
A process for producing a macromolecular monomer, which comprises anionic polymerization of a (meth)acrylic acid ester monomer by using, as a polymerization initiator, a compound represented by the following general formula [I]: ##STR1## wherein M.sup.+ is a quaternary ammonium ion; .phi.is a phenylene group; R.sub.1 and R.sub.2 are each an electron withdrawing group stabilizing the carbanion C.sup.-, or one of them is said electron withdrawing group and the other is an alkyl group of 1-6 carbon atoms or a phenyl group; and n is an integer of 0-6.