Combined seals, compositions, and methods of making the same
US11377514B2 · kind B2 · utility
1Cited by
83References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Feb 25, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/062
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A combined sealing member is provided that includes a composition comprising two or more polyolefin elastomers selected from the group consisting of a dense, a micro-dense and a dynamic silane-crosslinked polyolefin elastomer having a respective density of less than 0.90 g/cm3, less than 0.70 g/cm3, and less than 0.60 g/cm3. The combined sealing member exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.