Method of making a granular, cold water dispersible coating composition
US4816298A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Nov 27, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2866
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of making a cold water dispersible granular composition comprising a plasticizer and thermally moldable polymer, for example hydroxypropyl methylcellulose, hydroxypropyl cellulose, carboxymethylcellulose, or hydroxy ethylcellulose. The method comprises, extruding the composition at elevated temperatures to form an extruded material and grinding the extruded material to form a granular product. The granules are very dispersible in cold water and when added to cold water, the solution can be used in coating operations, such as to coat pharmaceuticals, foods and food supplements to protect, color, harden, make foods more palatable or mask the taste of solid dosage forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.