Production of detergent granulates
US6274544A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1998 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jun 15, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D11/0088
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A granular detergent product is made by spraying a liquid binder to contact a particulate solid starting material in a low shear granulator such as a fluidised bed apparatus. The d.sub.3,2 average droplet diameter is not greater than ten times the d.sub.3,2 average particle diameter of that fraction of the solid starting material which has a d.sub.3,2 particle diameter of from 20 .mu.m to 200 .mu.m provided that if more than 90% by weight of the solid starting material has a d.sub.3,2 average particle diameter less than 20 .mu.m then the d.sub.3,2 average particle diameter of the total solid starting materials shall be taken to be 20 .mu.m. If more than 90% by weight of the solid starting material has a d.sub.3,2 average particle diameter greater than 200 .mu.m then the d.sub.3,2 average particle diameter of the total starting solid material shall be taken to be 200 .mu.m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.