Granulation
US4567010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1982 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Aug 24, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C407/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Granules of the magnesium salts of percarboxylic acid carboxylates are obtained by spraying onto agitated feed particles of the salt a small amount of a dilute aqueous solution of a synthetic poly hydroxy-substituted compound, particularly polyvinylalcohol and drying the resultant agglomerate. It is especially suitable to carry out the granulation process in a warm air fluidized bed using feed particles of mainly below 200 microns producing eventually a low bulk density product mainly in the range 200-1000 microns. In a modification of the fluidized bed process, the agglomerating agent used can be a aqueous solution of carboxylated polyvinyl alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.