US 11,904,035 B2
Lamellar liquid cleansers comprising acyl isethionate and methyl acyl taurate surfactant mixtures
Douglas John Hiban, Shelton, CT (US); Jamie Lynn Miller, North Haven, CT (US); and Tirucherai Varahan Vasudevan, Bethany, CT (US)
Assigned to Conopco, Inc., Englewood Cliffs, NJ (US)
Appl. No. 17/611,700
Filed by Conopco, Inc., Englewood Cliffs, NJ (US)
PCT Filed May 4, 2020, PCT No. PCT/EP2020/062329
§ 371(c)(1), (2) Date Nov. 16, 2021,
PCT Pub. No. WO2020/233972, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 19175537 (EP), filed on May 21, 2019.
Prior Publication US 2022/0192934 A1, Jun. 23, 2022
Int. Cl. A61K 8/00 (2006.01); A61K 8/02 (2006.01); A61K 8/34 (2006.01); A61K 8/36 (2006.01); A61K 8/365 (2006.01); A61K 8/44 (2006.01); A61K 8/46 (2006.01); A61Q 5/02 (2006.01); A61Q 19/10 (2006.01)
CPC A61K 8/0295 (2013.01) [A61K 8/345 (2013.01); A61K 8/361 (2013.01); A61K 8/365 (2013.01); A61K 8/442 (2013.01); A61K 8/466 (2013.01); A61Q 5/02 (2013.01); A61Q 19/10 (2013.01); A61K 2800/596 (2013.01)] 19 Claims
 
1. A liquid lamellar composition comprising:
1) 0.1 to 10% by weight of acyl isethionate comprising sodium lauroyl isethionate;
2) 0.1% to 10% by weight of a methyl acyl taurate comprising sodium methyl lauroyl taurate, sodium methyl cocoyl taurate or a mixture thereof;
3) 0.1 to 20% by weight structurant comprising caprylic acid, lauric acid, myristic acid or a mixture thereof;
4) 0.1 to 10% by weight of a zwitterionic surfactant comprising cocamidopropyl betaine; and
5) 0.0 to 8.0% by weight nonionic surfactant, wherein the zwitterionic surfactant comprises cocamidopropyl betaine, with the proviso that surfactant is at a sum of less than 20% by weight and the composition does not simultaneously comprise 0.0% by weight zwitterionic surfactant and 0.9% by weight nonionic surfactant, and further wherein the weight ratio of methyl acyl taurate to acyl isethionate surfactant is between 1.1:1 to 1:1.15, the composition has 0 to 15% by weight glycerol, a pH from 6 to 7.3, less than 0.2% by weight sulfate-based surfactant, a preservative and a structurant comprising caprylic acid, lauric acid, myristic acid or a mixture thereof.