Curing agent which is suitable for EPDM-type rubbers
US8063155B2 · kind B2 · utility
0Cited by
4References
5Claims
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Inventor
Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Sep 22, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2481/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a sulphur donor curing agent comprising a combination of between 10 and 90 wt % of a mixture of polysulphides of poly(alkyl phenol) and between 90 and 10 wt. % a compound of the formula R′NHCONHR″ were R′ and R″ are the same or different and are hydrogen oa an alkyl or aryl radical having 1 to 20 carbon atoms and methods of curing an EPDM-type rubber elastomer with the composition which presents no risk of the formation of nitrosamines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.