Process for preparing granular sorbic acid
US4055618A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Sep 15, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C57/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing granular sorbic acid by adding water and/or a lower alkyl alcohol to powdery sorbic acid, kneading the resulting mixture under specific conditions to give a uniformly wetted powder, supplying the wetted powder to a screw type extruding machine, extruding the wetted powder through a perforated-cylinder die under specific conditions to give a vermicelli-like extrudate, and drying the extrudate. The obtained granules have sufficient rigidity and can be easily powdered by a mechanical action. When starch is added together with water and/or a lower alkyl alcohol, more rigid granules, but able to be easily powdered by a mechanical action such as agitation, are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.