公开(公告)号：US20250027009A1

公开(公告)日：2025-01-23

申请号：US18714323

申请日：2022-11-22

Applicant: BASF SE

Inventor： Ben Chuan Zhu ,  Fang Qin Lin ,  Yan Xiao ,  Shou Dao Zhang ,  Claudia Brunn ,  Detlev Stanislowski

IPC: C11C1/00 ,  A61K8/46 ,  A61Q19/00

Abstract: The present invention is related to a method for purifying crude α-sulfo fatty acid salt obtained by the reaction of fatty acid and sulfur oxides, comprising the following steps: a) diluting the crude α-sulfo fatty acid in a solvent and adjusting the ph from 2 to 4; b) heating up the slurry of a-sulfo fatty acid salt obtained in the step a) until being fully solubilized: c) cooling down the solution of α-sulfo fatty acid salt obtained in the step b) to room temperature gradually to obtain the crystals; d) filtering the crystal obtained in the step c) to remove the motherinsing the filter cake at least twice with acid aqueous solution to obtain the purified α-sulfo fatty acid salt.

公开(公告)号：US20240307282A1

公开(公告)日：2024-09-19

申请号：US18575898

申请日：2022-07-05

Applicant: BASF SE

Inventor： Ben Chuan Zhu ,  Fang Qin Lin ,  Ting Ting Hu ,  Ke Wang ,  Ye Fan Wu ,  Sen Yang ,  Wei Song Qu ,  Yi Zhou Zheng

IPC: A61K8/42 ,  A61K8/44 ,  A61Q19/10

CPC classification number: A61K8/42 ,  A61K8/442 ,  A61Q19/10 ,  A61K2800/436 ,  A61K2800/48

Abstract: It relates to a thickening agent comprising an amidoamine of formula (I)and a N-acylamino acid salt of formula (II), which are as defined in the description. It also relates to sulfate-free personal care cleansing compositions containing the thickening agent.