Aqueous viscoelastic surfactant solutions for hair and skin cleaning
US5965502A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/596
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Aqueous, viscoelastic surfactant solutions for the cleaning of hair and skin which contain: PA1 (A) from 4 to 25% by weight of an anionic surfactant; PA1 (B) from 0 to 10% by weight of a betainic surfactant; PA1 (C) from 0 to 20% by weight of a nonionic surfactant; PA1 (D) from 0 to 6% by weight of an electrolyte; PA1 (E) from 0 to 5% by weight of a water-soluble polymer; and PA1 (F) from 0 to 5% by weight of a further constituent; in which the sum of the amounts of (A), (B), and (C) is at least 10% by weight and the sum of the amounts of (C), (D), and (E) is between 2 and 20% by weight, in each case based on the total weight of the aqueous solution, and having a shear modulus, G.sub.0, between 50 and 500 Pa at temperatures between 20 and 40.degree. C. and a pH of from 4 to 8, and in which the conditions for the identity of the storage modulus, G', and the loss modulus, G", are in the angular frequency range between 0.1 and 60 rad.multidot.s.sup.-1, exhibit optimum flow behavior for the intended applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.