Sulphate-free and nonionic surfactant-free cleansing composition

US11969495B2 · kind B2 · utility

Assignee

• Conopco, Inc. · US

Inventors

• Annie Jaye GALPIN · Mancot, GB
• Robert MACHEN · Brimstage, GB
• Smita Puntambekar · Brimstage, GB
• Robert George Riley · West Richland, US
• Pierre Starck · Brimstage, GB

Key dates

• Filing date: May 7, 2019
• Grant date: Apr 30, 2024
• Expiry date: Jun 7, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/596
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

1. A sulphate free cleansing composition for hair and scalp comprising, in an aqueous continuous phase: a total amount of anionic surfactant, amphoteric surfactant and zwitterionic surfactant consisting of: (i) from 3 wt % to 13 wt %, by weight of the total composition at 100% activity, of an alpha olefin sulfonate anionic surfactant of general formula (I): R1—CH═CH—CH2—SO3−M+ (I) in which R1 is selected from linear or branched alkyl groups having from 11 to 13 carbon atoms and mixtures thereof; and M is a solubilizing cation; (ii) from 1 to 6%, by weight of an amphoteric or zwitterionic surfactant, selected from an alkyl betaine of general formula (II) R2—N+(CH3)2—CH2—COO−M+ (II) wherein R2=C12 (Lauryl) or Coco derived; an alkyl hydroxy sultaine of general formula (III), R3—N+(CH3)2—CH2—CH(OH)—CH2—SO3−M+ (III) wherein R3=C12 (Lauryl) or Coco derived; an alkyl aminopropyl hydroxy sultaine of general formula (IV), R4—CO—NH—(CH2)3—N+(CH3)2—CH2—CH(OH)—CH2—SO3−M+ (IV) wherein R4=C12 (Lauryl) or Coco derived; an alkyl amphoacetate of general formula (V), R5—CO—NH—(CH2)2—N(CH2—CH2—OH)(CH2—COO−M+) (V) wherein R5=C12 (Lauryl) or Coco derived; and mixtures thereof; (iii) from 0.05 to 0.9 wt…