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. 17, 1981
Filed:
Jan. 02, 1980
Applicant:
Inventors:
Noriaki Yoshimura, Kurashiki, JP;
Masuhiko Tamura, Kurashiki, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C09F / ;
U.S. Cl.
CPC ...
260404 ; 568618 ; 568619 ; 564123 ; 564183 ; 564184 ; 564186 ; 564189 ; 564190 ; 564192 ; 564204 ; 564207 ; 564208 ; 564215 ; 564218 ; 564223 ; 564374 ; 564383 ; 564391 ; 564392 ; 564443 ; 564453 ; 564463 ; 564505 ;
Abstract
Polyoxyalkylene compounds having at least four oxyalkylene units and one or two terminal hydroxyl groups are etherified by reacting same with organic primary chlorides or bromides in the presence of an aqueous, at least 30% by weight solution of sodium or potassium hydroxide to produce the corresponding etherified polyoxyalkylene derivatives. The molar ratio of the organohalide to the hydroxyl group(s) of the polyoxyalkylene compound is at least 1.2, and the molar ratio of the alkali metal hydroxide to such hydroxyl group(s) is at least 1.