Powdered abrasive cleansers with encapsulated perfume
US4961871A · kind A · utility
19Cited by
14References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1989 |
| Grant date | Oct 9, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Powdered, abrasive, hard surface cleansers containing micro-encapsulated perfume wherein the capsules are essentially water-insoluble, but can become perfume permeable during use by the combined action of water and abrasive. The preferred capsules are formed from gelatin and a polyanionic material by coacervation techniques and then are cross-linked to provide controlled water insolubility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.