Polybutadiene graft copolymers as coupling agents for carbon black and silica dispersion in rubber compounds
US10472449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Coupling agents useful for preparing vulcanized composition with filers such as silica and carbon black are provided. The coupling agents include fluorine substituted styrene compounds and styrene compounds containing a hydrocarbyloxysilane functional group. The coupling agents may be grafted onto polydiene polymers or added into a vulcanizable composition as an oligomer. The use of one or both of fluorine substituted styrene compounds and styrene compounds containing a hydrocarbyloxysilane functional group may improve the strength, rolling resistance, and/or cure rate of a vulcanized polymer compared to a vulcanized polymer without a coupling agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.