Composite material based on rubbers of the silicone type and of the ethylene-propylene copolymer or terpolymer type
US5346760A · kind A · utility
2Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1992 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Jan 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31924
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composite material comprising at least two elastomer layers, the first layer having a first composition comprising from 40 to 80 percent by weight of silicone rubber, the second layer having a second composition comprising from 50 to 100 percent by weight of rubber of the ethylene-propylene copolymer and/or terpolymer type, wherein the first composition further contains from 20 to 60 percent by weight of rubber of the ethylene-propylene copolymer and/or terpolymer type, and each of the two compositions contains more than 5 percent, and preferably from 5 to 60 percent, by weight of silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.