Antidandruff composition and method of use
US11376209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2018 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | May 7, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/546
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An aqueous anti-dandruff shampoo composition which comprises: (I) a cleansing surfactant selected from the group consisting of anionic surfactant, zwitterionic or amphoteric surfactant and nonionic surfactant; (II) suspended particles of an anti-dandruff agent, (III) an anti-settling, thickening polymer, wherein the anti-settling, thickening polymer, comprises: (a) 40 to 74.5 wt % of structural units of C1-4 alkyl acrylate; (b) 20 to 50 wt % of structural units of methacrylic acid; (c) 0.2 to <5 wt % of structural units of 2-acrylamido-2-methylpropane sulfonic acid (AMPS); (d) 5 to 25 wt % of structural units of a specialized associated monomer having the following structure wherein R1 is a linear saturated C10-24 alkyl group; wherein R2 is a hydrogen or a methyl group (preferably, wherein R2 is a methyl group); and wherein n is an average of 20 to 28; with the proviso that the structural units of the specialized associated monomer (d) are derived from one of (i) a single specialized associated monomer (preferably, a single specialized associated monomer wherein R1 is selected from the group consisting of a linear saturated C12 alkyl group, a linear saturated C18 alkyl group and a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.