Crosslinkable rubber composition
US5043455A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1990 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Mar 26, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2321/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
It is sometimes desirable to cure rubber compositions utilizing non-sulfur curing agents. The subject invention reveals rubber compositions which can be cured without utilizing sulfur or sulfur containing compounds. The subject invention more specifically discloses a rubber composition which can be crosslinked by heating which is comprised of (1) at least one rubber having pendant blocked isocyanate groups bound thereto; and (2) at least one compound which contains at least 2 Zerewitinoff active hydrogens. This invention also discloses crosslinking of elastomer compounds containing (1) at least one rubber having functionalized groups containing at least one Zerewitinoff active hydrogen and (2) at least one compound which contains at least two blocked isocyanate groups. This invention also discloses self-curing elastomers containing both blocked isocyanate groups and groups containing at least one active Zerewitinoff hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.