Particles
US6927195B2 · kind B2 · utility
3Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Feb 25, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/505
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Particles suitable for inclusion in a dry product or article, typically a laundry powder, comprise a core of swellable material, e.g. an organic polymer, containing perfume absorbed therein, the core being coated with water-soluble encapsulating material impervious to the perfume. The coating of the particles acts to prevent premature evaporation or dissipation from the particles of the loaded perfume until the coating is dissolved on contact with water in use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.