	US 12,109,288 B2
	Sulfate-free surfactant system
Edward T. Borish, Greenville, SC (US); and Stephanie Anderson, Greenville, SC (US)
Assigned to Ethox Chemicals, LLC, Greenville, SC (US)
Filed by Ethox Chemicals, LLC, Greenville, SC (US)
Filed on Sep. 21, 2022, as Appl. No. 17/949,833.
Application 17/949,833 is a division of application No. 17/072,318, filed on Oct. 16, 2020, granted, now 11,491,094.
Claims priority of provisional application 62/923,227, filed on Oct. 18, 2019.
Prior Publication US 2023/0053407 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/37 (2006.01); A61K 8/03 (2006.01); A61K 8/34 (2006.01); A61K 8/41 (2006.01)

CPC A61K 8/375 (2013.01) [A61K 8/03 (2013.01); A61K 8/345 (2013.01); A61K 8/41 (2013.01); A61K 2800/10 (2013.01); A61K 2800/30 (2013.01); A61K 2800/48 (2013.01); A61K 2800/596 (2013.01)]

31 Claims

1. A method of forming a sulfate-free surfactant system comprising:

forming an organic phase comprising:

forming a glyceride by reacting a mixture of acids with glycerin wherein said mixture of acids comprises 1.1 to 2.1 moles of acid per mole of said glycerin; and

mixing said glyceride with a surfactant selected from group consisting of a cationic surfactant, an anionic surfactant, a nonionic surfactant and an amphoteric surfactant or mixtures thereof wherein said mixture of acids comprises:

at least 0.275 to no more than 0.990 moles of a first acid comprising a branched acid with 16-20 aliphatic carbons;

at least 0.250 to no more than 0.810 moles of a second acid comprising an alkyl acid with 9-11 carbons; and

at least 0.250 to no more than 0.810 moles of a third acid comprising an alkyl acid with 7-9 carbons wherein said third acid has a lower molecular weight than said second acid.