Oil-in-water emulsions with increased viscosity under shear stress
US4798682A · kind A · utility
94Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1986 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Jun 6, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Oil-in-water emulsions show improved viscosity behavior, more especially an increased viscosity under shear stress, when the continuous aqueous phase contains a combinations of hydrocolloids comprising: (a) at least one water-soluble nonionic cellulose ether; and (b) a cross-linked acrylic acid polymer or copolymer having a weight average molecular weight of from 1,000,000 to 5,000,000; in the form of a water-soluble salt in a quantitative ratio a:b of from 9:1 to 1:9. Cosmetic O/W-creams according to the invention show more "body" when applied to and spread over the skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.