Absorbent materials
US4657881A · kind A · utility
42Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Feb 10, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/4825
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Absorbent material comprising clay mineral particles, the particles comprising compacted masses of relatively smaller particles is found to have high absorbency which may be further increased by the use of additives such as silicates, pyrophosphates, swelling clays, polysaccharides or polyvinyl pyrrolidone. Preferred are smectites, attapulgite or sepiolite preferably in the form of particles in below 1.4 mm, preferably below 710 microns in the size range compacted into larger particles in the 710 micron to 4 mm size range. The absorbent particles are suitable for use as pet litter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.