Phosphorus bound porous microspheres
US5521133A · kind A · utility
23Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to microspheres produced by spray drying clay slurries and calcining the product to form attrition resistant microspheres. Phosphoric acid is injected in a neutral to mildly alkaline dispersed high solids kaolin slurry immediately before spray drying to improve properties of the microspheres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.