Method for production of cystamine and alkylene oxide adduct thereof, additive for aqueous lubricant, and aqueous lubricant

摘要

Cystamine is produced by a method which comprises reacting a 2,2-dialkyl thiazolidine represented by the general formula (1): <IMAGE> (1) wherein R1 and R2 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.