Microcapsules in the nanometric range and a method for their production
US4021364A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1973 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Dec 4, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention is concerned with novel synthetic capsules which are colloid soluble in water or suspendible or colloid soluble in hydrophobic media and consist of compatible polymeric material, more especially of acrylamide and N,N'-methylene-bis-acrylamide gel or of acrylic acid and acrylic acid methyl ester gel, which are submicroscopic and mainly micellar in size, and which contain biologically or pharmacodynamically active material, more especially proteins, antigens, pharmacologically or therapeutically active substances or pesticides, fertilizers, dyes, color forming agents, adhesives and catalysts or other technically active substances in an incorporated and/or adsorbed form, together with the method for their production and their application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.