METHOD OF PROCESSING BETAINES AND AMPHOTERIC SURFACTANTS
摘要
Described is a method of producing betaines and amphoteric surfactants with a reduced dichloroacetic acid content by adjusting the pH of the surfactants to the range 11 to 14 by the addition of alkali hydroxides and subsequently subjecting them to heat treatment, optionally under increased pressure. The products produced under these conditions are stable to hydrolysis and easy to bleach. Furthermore, the addition of preservatives to protect the surfactants from microbial attack is unnecessary.
申请公布号
WO9420452(A1)
申请公布日期
1994.09.15
申请号
WO1994EP00621
申请日期
1994.03.03
申请人
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN;UPHUES, GUENTER;PLOOG, UWE;JESCHKE, RAINER;SCHICK, RENATE