Rubber layer structure
US6071582A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A rubber layer structure provided with a first rubber layer having a first liquid facing surface for contact with a liquid surface and a second rubber layer in contact with a second surface of the first rubber layer. The first rubber layer is formed of a peroxide vulcanization first rubber compound which mainly comprises EPDM, contains sulfur powder as a co-crosslinking agent and does not contain a zinc compound. The second rubber layer is formed of a sulfur vulcanization second rubber compound which mainly comprises EPDM and contains a zinc compound. The first rubber layer and the second rubber layer are adhered together by vulcanization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.