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US 2012/0059113 A1Published application
Processing of rubber compositions including siliceous fillers
AssigneeBridgestone Corporation
InventorsXiao-Dong Pan, Zengquan Qin, Yuan-Yong Yan, Jessica Kurasch
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Abstract
Vulcanizates with desirable properties can be obtained from compositions incorporating polymers that include hydroxyl group-containing aryl functionalities, silica or other particulate filler(s) that contain or include oxides of silicon and a compound that includes multiple hydroxyl groups. The compound can act to disrupt the interactivity of the functionalities and the particulate filler particles during processing of the composition, thereby facilitating processing of the composition.
Claims15
A process for providing a composition, said process comprising blending
- (1) a polymer comprising ethylenic unsaturation and pendent or terminal functionality that comprises an aryl group comprising at least two OR substituents, wherein R is H or a hydrolyzable group,
- (2) filler particles that comprise oxides of silicon,
- (3) a compound that comprises more than one hydroxyl group, said compound having a melting point of from about 40° to about 165° C., and
- (4) a vulcanizing agent,
- thereby providing said composition, said composition having a compound Mooney viscosity at 130° C. that is less than an identical composition in which said compound is not present.
2 more elements
Dependencies are inferred from the claim text.