Dried rehydratable film containing agarose or gelose and process for preparing same
US4048377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Jan 12, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Dried agarose or gelose-containing films which are rehydratable into aqueous gel films are disclosed. The dried films are prepared by first forming, on a support, an aqueous gel film containing at most 5% by weight of agarose or gelose and a water-soluble linear polymer or copolymer of acrylamide or methacrylamide. The viscosity of such polymer and copolymer in a 5% aqueous solution at 22.degree. C is about 17000 centipoises or less and preferably about 6000 centipoises or less. The aqueous gel film is then dried according to known techniques, with the linear polymer or copolymer of acrylamide or methacrylamide being included in the dried film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.