Resin modified oil extended rubber
US12043735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2022 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Oct 10, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/322
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
This invention is based upon the unexpected finding that a hydrocarbon traction resin can be dispersed into the oil used in making an oil extended emulsion and solution rubbers to attain improved performance characteristics. For instance, this technique allows for the hydrocarbon traction resin to be incorporated into the rubber at a higher level than would ordinarily be possible using conventional mixing techniques. In tire tread compounds this provides improved wet traction characteristics without compromising cured stiffness (dry traction) and ultimate properties (chip/chunk resistance). This technique can be used to incorporate a resin into virtually any synthetic rubber that can benefit from being oil extended. It is of particular value in making resin modified solution styrene-butadiene rubber (SSBR), emulsion styrene-butadiene rubber (ESBR), high cis-1.4-polybutadiene rubber, and synthetic polyisoprene rubber which are formulated for use in tire tread compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.