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, 1994
Filed:
Jun. 25, 1993
Applicant:
Inventors:
Jun Okamoto, Yokohama, JP;
Yujiro Goto, Kawasaki, JP;
Masao Kitano, Kamakura, JP;
Seiichi Suzuki, Yokohama, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 475 ; 252 493 ; 564487 ; 564501 ;
Abstract
Cystamine is produced by a method which comprises reacting a 2,2-dialkyl thiazolidine represented by the general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 independently are alkyl groups of 1 to 5 carbon atoms, with a peroxide in the presence of water. An alkylene oxide adduct of cystamine is produced by a method which comprises reacting the reaction mixture obtained as described above further with an alkylene oxide. These cystamine and alkylene oxide adduct of cystamine are useful as an additive for an aqueous lubricant.