Long-acting rubber anti-degradant and rubber composition comprising the same for tires
US10829615B2 · kind B2 · utility
2Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Feb 12, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel and long-acting rubber anti-degradant and rubber composition comprising the same for tires. The anti-degradant comprises at least two compounds, each of which is selected from a compound of Formula I, II, III-a, or III-b: and each of the compounds have different formulae from others, and can't be compounds of formula III-a and III-b at the same time when the anti-degradant consists of only 2 compounds. The anti-degradant is used to provide a rubber composition with improved long-term resistance to thermo-oxidative aging and ozone aging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.