Diaphragm
US4491621A · kind A · utility
4Cited by
2References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 19, 1982 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Nov 19, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31924
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An oil resistant diaphragm having a liquid contacting surface made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This diaphragm is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.