	US 11,872,296 B2
	Preservation compositions
Stuart Campbell-Lee, Wirral (GB); Rupak Mitra, Bangalore (IN); Thomas Richard Pointon, Warrington (GB); and Ian Peter Stott, Wirral (GB)
Assigned to CONOPCO, INC., Englewood Cliffs, NJ (US)
Appl. No. 17/056,592
Filed by Conopco, Inc., Englewood Cliffs, NJ (US)
PCT Filed May 20, 2019, PCT No. PCT/EP2019/062983 § 371(c)(1), (2) Date Nov. 18, 2020, PCT Pub. No. WO2019/233757, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 18175793 (EP), filed on Jun. 4, 2018.
Prior Publication US 2021/0205194 A1, Jul. 8, 2021
Int. Cl. A61K 8/362 (2006.01); A61K 8/34 (2006.01); A61Q 5/00 (2006.01)

CPC A61K 8/362 (2013.01) [A61K 8/347 (2013.01); A61Q 5/00 (2013.01); A61K 2800/524 (2013.01); A61K 2800/74 (2013.01)]

11 Claims

1. A hair-treatment composition comprising an antimicrobial preservation system and one or more surfactants; wherein the antimicrobial preservation system comprises:

i. itaconic acid or salt thereof and

ii. an aromatic alcohol selected from the group consisting of ethylvanillin, eugenol, thymol, and mixtures thereof;

wherein a weight ratio of compound i) to compound ii) is from 1:10 to 50:1; and

wherein the level of preservation system is from 0.05 to 5 wt % of the total composition;

wherein the one or more surfactants comprises an amphoteric or a zwitterionic surfactant selected from the group consisting of alkyl betaines, alkyl amidopropyl betaines, alkyl sulphobetaines, alkyl glycinates, alkyl carboxyglycinates, alkyl amphopropionates, alkylamphoglycinates, alkyl amidopropyl hydroxysultaines, acyl taurates and acyl glutamates, wherein the alkyl and acyl groups have from 8 to 19 carbon atoms; and

wherein the one or more surfactants are present in the hair-treatment composition in an amount of from 5% to 30% by weight.