Rubbers swellable with water and aqueous solutions and the method for producing the same
US5384370A · kind A · utility
3Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1994 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Jan 31, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention concerns rubber-based composite materials swellable with water and associated methods of production. A swellable rubber material according to the present invention comprises a vulcanized non-silicone rubber selected from the group consisting of natural rubber, butadiene-styrene rubber, bromobutyl rubber, and ethylene-propylene rubber; and a hydrogel filler cross-linked by a crosslinking agent, wherein the composite material is vulcanizable at a temperature up to 150.degree. C., is thermoformable, possesses shape memory after thermoforming, and is swellable with water or aqueous solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.