Polymeric antioxidants
US4138389A · kind A · utility
8Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1974 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Jul 25, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L21/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vulcanizable compositions contain in admixture a synthetic high molecular weight polymer and a compatible low molecular weight polymer containing a multiplicity of antioxidant functional groups chemically bound to the polymer. Vulcanizates derived from these compositions have improved aging characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.