Clear antiperspirants and deodorants made with siloxane-based polyamides
US6451295B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 3, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/898
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Clear antiperspirant and/or deodorant compositions, especially clear sticks having good structural integrity, can be formed by incorporating at least 8% by weight based on the total weight of the composition of a selected siliconized polyamide into a product formulated with at least one silicone material and at least one non-silicone emollient. The siliconized polyamides have the silicone portion in the acid side of the polyamide and are selected so that: (a) the degree of polymerization in the silicone portion is in the range of 12-18; (b) the average molecular weight of the siliconized polyamide is at least 50,000 daltons with at least 95% of the polyamide having a molecular weight greater than 10,000 as measured by size exclusion chromatography; and (c) the polydispersity is less than 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.