Granular compositions
US6670311B1 · kind B1 · utility
17Cited by
5References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | May 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249995
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A granular composition, especially for incorporation in washing powder formulations, comprises at least 40% by weight of an amorphous silica and typically at least 30% by weight of a functional ingredient such as a perfume, the amorphous silica having a surface area of at least 550 m2/g, a pore volume from about 1.0 to about 2.5 ml/g and a particle size of no more than 50 microns, the granules of said composition having a particle size from about 200 to about 2000 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.