Abstract: Disclosed herein are methods of preparing composites from solid elastomer(s) and wet filler(s), as well as products, including composites, vulcanizates, and articles therefrom. The wet filler can have a liquid content of at least 15%. A resulting composite comprises the filler dispersed in the elastomer at a loading of at least 20 phr with a filler yield loss of no more than 10%, wherein the composite has a liquid content of no more than 10% by weight based on total weight of said composite.

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

Abstract: Novel methods of making elastomer compositions irclude the use of certain modifying agents and mechanical working prior to incorporation of a vulcanization system in a first or other early stage of a multi-stage process particulate filler, such as carbon black, and sulfur cross-linking agent are substantially dispersed into sulfur crosslinkable hydrocarbon elastomer. The particulate filler and sulfur crosslinking agent can be pre-mixed together as a pre-blend prior to being added to the elastomer. A substantially unvulcanized, processable elastomer is produced by the multi-stage process, involving further mechanical working of the initial masterbatch. A curative additive comprising accelerator, and optionally additional sulfur crosslinking agent, can be added and dispersed in the elastomer to produce a vulcanizable composition.

Abstract: In a multi-stage process for producing a substantially unvulcanized elastomer composition, a masterbatch is produced by thermomechanical working in a first or other early stage of the multi-stage process. The masterbatch comprises sulfur crosslinkable hydrocarbon elastomer in which is substantially dispersed, particulate fillers, for example carbon black or silicon-treated carbon black, modified carbon black and/or silica and sulfur crosslinking agent effective to crosslink the hydrocarbon elastomer and selected from sulfur donors and sulfur. The filler and sulfur crosslinking agent can be mixed together as a pre-blend prior to being added to the elastomer. The substantially unvulcanized elastomer is then produced in one or more later stages of the multi-stage process, involving further theromechanical working of the masterbatch. A curative additive comprising accelerator, and optionally additional sulfur crosslinking agent, is added and dispersed in the elastomer in the last stage of the multistage process.