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US 2013/0158164 A1Published application
Elastomer composite with silica-containing filler and methods to produce same
AssigneeCabot Corporation
InventorsMichael D. Morris, Anand Prakash, Frederick H. Rumpf
Life of this patent
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Abstract
An elastomer composite with silica-containing filler is described, along with methods to make the same. The advantages achieved with the elastomer composite and methods are further described.
Claims46
A method of producing an elastomer composite, comprising:
- feeding a continuous flow of a first fluid comprising elastomer latex to a mixing zone of a coagulum reactor;
- feeding a continuous flow of a second fluid comprising particulate silica-containing filler under pressure to the mixing zone of the coagulum reactor to form a mixture with the elastomer latex, the feeding of the second fluid against the first fluid within the coagulum reactor being sufficiently energetic to coagulate at least a portion of the elastomer latex as the elastomer latex is mixed with the particulate silica-containing filler in the coagulum reactor;
- and further comprising introducing at least one coupling agent and introducing at least one further additive, such that the particulate silica-containing filler contacts the coupling agent prior to the silica-containing filler contacting the further additive, and wherein the coupling agent is introduced in the mixing zone or after the mixture exits the mixing zone.
A method of producing an elastomer composite, comprising:
- feeding a continuous flow of a first fluid comprising elastomer latex to a coagulum reactor;
- feeding a continuous flow of a second fluid comprising particulate filler selected from silicon-treated carbon black, silica coated carbon black, or a mixture of both under pressure to the coagulum reactor to form a mixture with the elastomer latex, the feeding of the second fluid against the first fluid within the coagulum reactor being sufficiently energetic to coagulate at least a portion of the elastomer latex as the elastomer latex is mixed with the particulate silica-containing filler in the coagulum reactor;
- and further comprising introducing at least one coupling agent and introducing at least one further additive, such that the particulate filler contacts the coupling agent prior to the particulate filler contacting the further additive.
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A method of producing an elastomer composite, comprising:
- feeding a continuous flow of first fluid comprising elastomer latex to a coagulum reactor;
- feeding a continuous flow of a second fluid comprising particulate silica-containing filler under pressure to the coagulum reactor to form a mixture with the elastomer latex, the feeding of the second fluid against the first fluid within the coagulum reactor being sufficiently energetic to coagulate at least a portion of the elastomer latex as the elastomer latex is mixed with the particulate silica-containing filler in the coagulum reactor;
- and further comprising introducing at least one coupling agent and introducing at least one further additive in the method, wherein the coupling agent and the further additive are introduced at about the same time and wherein the elastomer latex is introduced as a single stage addition or a multi-stage addition.
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33-58. (canceled)
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62-64. (canceled)
Dependencies are inferred from the claim text.