Polysulfide treatment of carbon black filler and elastomeric compositions with polysulfide treated carbon black
US9005359B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | May 23, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/3018
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A chemically treated carbon black product is provided, which includes a pellet having an agglomerated mass of carbon black aggregates densified in a generally spheroidal form. The carbon black aggregates have polysulfide adsorbed on surfaces thereof. The polysulfide is thereby distributed throughout the pellet. Elastomeric compositions containing the chemically treated carbon black are also provided, and exhibit a reduction in hysteresis and equivalent or better abrasion resistance. A method for manufacturing the treated carbon black product is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.