US 12,329,837 B2
Aqueous surfactant compositions and soap bars
Zhao Ting Liu, Shanghai (CN); Yang Zhang, Shanghai (CN); Ming Hao Gu, Shanghai (CN); and Claudia Brunn, Düsseldorf-Holthausen (DE)
Assigned to BASF SE, Ludwigshafen (DE)
Appl. No. 17/604,861
Filed by BASF SE, Ludwigshafen (DE)
PCT Filed Apr. 27, 2020, PCT No. PCT/EP2020/061606
§ 371(c)(1), (2) Date Oct. 19, 2021,
PCT Pub. No. WO2020/225005, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. PCT/CN2019/085840 (WO), filed on May 7, 2019; and application No. 19178906 (EP), filed on Jun. 7, 2019.
Prior Publication US 2022/0257486 A1, Aug. 18, 2022
Int. Cl. A61K 8/00 (2006.01); A61K 8/02 (2006.01); A61K 8/46 (2006.01); A61K 8/73 (2006.01); A61Q 5/02 (2006.01); C11D 1/28 (2006.01); C11D 3/22 (2006.01); C11D 17/00 (2006.01)
CPC A61K 8/466 (2013.01) [A61K 8/0216 (2013.01); A61K 8/732 (2013.01); A61K 8/738 (2013.01); A61Q 5/02 (2013.01); C11D 1/28 (2013.01); C11D 3/222 (2013.01); C11D 17/0065 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A surfactant composition comprising
one or more alpha-sulfo fatty acid disalt (A) of the general formula (I),
R1CH(SO3M1)COOM2   (I)
in which the radical R1 is a linear or branched alkyl or alkenyl radical with 6 to 16 carbon atoms and the radicals M1 and M2, independently of one another, are selected from the group consisting of H, Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine,
one or more dextrin (B) of the general formula (II),

OG Complex Work Unit Chemistry
in which n is an integer between 3 and 200, where the following provisos apply:
if the surfactant composition comprises one or more ester sulfonate (E) of the general formula (V),
R2CH(SO3M7)COOR3   (V)
in which the radical R2 is a linear or branched alkyl or alkenyl radical with 6 to 18 carbon atoms and the radical R3 is a linear or branched alkyl or alkenyl radical with 1 to 20 carbon atoms, where the radical R3 can be an alkenyl radical or be branched only above 3 carbon atoms, and the radical M7 is selected from the group consisting of Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine, it is the case that the compound (A), based on the sum of the compounds (A) and (E), must be present to more than 50% by weight;
wherein the surfactant composition is a solid; and
wherein the one or more dextrin (B) is present in an amount of 1 to 6 percent by weight based on the weight of the composition.