Patents by Inventor Meng-Jiao Wang
Meng-Jiao Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6211279Abstract: Elastomeric compositions are described and include at least one elastomer and an aggregate having a carbon phase and a silicon-containing species phase. The aggregate exhibits one or more specific characteristics. Methods of improving the rolling resistance of an elastomeric composition are also described and include introducing the aggregate into an elastomeric composition.Type: GrantFiled: August 16, 1999Date of Patent: April 3, 2001Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang
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Patent number: 6197274Abstract: Silica coated carbon blacks are disclosed and can be prepared by coating a fine dispersion of carbon black, such as a carbon black having an attached organic group(s). Compositions and articles of manufacture, including elastomeric compositions, containing such carbon black are also disclosed.Type: GrantFiled: September 25, 1997Date of Patent: March 6, 2001Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, James A. Belmont, Steven R. Reznek
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Patent number: 6172154Abstract: Novel elastomeric compositions are disclosed, incorporating silicon-treated carbon black and pre-vulcanization modifier selected from non-silane polysulfidic organo-compounds. The silicon-treated carbon black particulate filler differs chemically and in its performance characteristics from simple mixtures of silica and carbon black fillers. The pre-vulcanization modifier is effective to substantially increase bound rubber content in the product of a non-productive thermomechanical working of a base composition incorporating the silicon-treated carbon black particulate filler and SBR or other such unsaturated elastomer. The thermal working takes place at a maximum temperature sufficient to vulcanize the unsaturated elastomer if it were in the presence of a suitable vulcanization system.Type: GrantFiled: May 3, 1996Date of Patent: January 9, 2001Assignee: Cabot CorporationInventors: Trevor Alan Brown, Meng-Jiao Wang
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Patent number: 6150453Abstract: Disclosed are elastomeric compounds including an elastomer and an aggregate comprising a carbon phase and a metal-containing species phase, optionally including a coupling agent. Also disclosed is an aggregate comprising a carbon phase and a metal-containing species phase. A variety of elastomers and formulations employing such elastomers are contemplated and disclosed. Elastomeric compounds incorporating an elastomer and the aggregate are also disclosed. Also disclosed are methods for preparing elastomers compounded with the aggregate, and methods of improving various properties of elastomeric compounds, such as abrasion resistance, hysteresis, wet skid resistance, and/or wet traction.Type: GrantFiled: March 27, 1998Date of Patent: November 21, 2000Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Yakov Evgenjevich Kutsovsky
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Patent number: 6057387Abstract: A method of making an aggregate comprising at least a carbon phase and a silicon-containing species phase is disclosed. The method involves introducing a first feedstock into a first stage of a multi-stage reactor, and introducing a second feedstock into the reactor at a location downstream of the first stage. The first and second feedstock comprise a carbon black-yielding feedstock, and at least one feedstock also comprises a silicon-containing compound. The reactor is operated at a sufficient temperature to decompose the silicon-containing compound and to pyrolize the carbon black-yielding feedstock. An additional method is disclosed which involves making an aggregate comprising a carbon phase and a silicon-containing species phase using multi-stage reactor having at least the stages for introducing a feedstock, wherein at least one of the feedstocks comprises a carbon black-yielding feedstock and wherein at least one of the feedstock comprises a silicon-containing compound.Type: GrantFiled: April 17, 1998Date of Patent: May 2, 2000Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang
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Patent number: 6028137Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance in the absence of a coupling agent, lower hysteresis at high temperature and comparable or increased hysteresis at low temperature compared to an elastomer containing an untreated carbon black. A variety of elastomers and formulations employing such elastomers are contemplated and disclosed. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: August 14, 1997Date of Patent: February 22, 2000Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis, James A. Belmont
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Patent number: 6017980Abstract: Disclosed are elastomeric compounds including an elastomer and an aggregate comprising a carbon phase and a metal-containing species phase, optionally including a coupling agent. Also disclosed is an aggregate comprising a carbon phase and a metal-containing species phase. A variety of elastomers and formulations employing such elastomers are contemplated and disclosed. Elastomeric compounds incorporating an elastomer and the aggregate are also disclosed. Also disclosed are methods for preparing elastomers compounded with the aggregate.Type: GrantFiled: March 27, 1997Date of Patent: January 25, 2000Assignee: Cabot CorporationInventors: Meng-Jiao Wang, Khaled Mahmud
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Patent number: 6008272Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared to an elastomer containing an untreated carbon black. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: May 12, 1998Date of Patent: December 28, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis
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Patent number: 5977213Abstract: A silicon-treated carbon black pre-coupled with a coupling agent is disclosed. Compositions and articles of manufacture, including elastomeric compositions, containing such a pre-coupled silicon-treated carbon black as well as methods of making the same are also disclosed.Type: GrantFiled: May 2, 1997Date of Patent: November 2, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang
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Patent number: 5948835Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysteresis at high temperature and comparable or increased hysteresis at low temperature compared to an elastomer containing an untreated carbon black. A variety of elastomers and formulations employing such elastomers are contemplated and disclosed. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed is method for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: June 18, 1997Date of Patent: September 7, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis
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Patent number: 5919841Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared to an elastomer containing an untreated carbon black. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: June 17, 1997Date of Patent: July 6, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis
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Patent number: 5916956Abstract: 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.Type: GrantFiled: January 16, 1997Date of Patent: June 29, 1999Assignee: Cabot CorporationInventors: Meng-Jiao Wang, Trevor Alan Brown, Ralph E. Dickinson
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Patent number: 5916934Abstract: Disclosed are elastomeric compounds including an elastomer, a silica coated carbon black, and optionally including a coupling agent. Elastomeric compounds incorporating an elastomer and an oxidized, partially coated carbon black are also disclosed. Also disclosed are silica coated carbon black/elastomeric formulations using a variety of elastomers useful in a variety of product applications.Type: GrantFiled: February 25, 1997Date of Patent: June 29, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Steven R. Reznek, James A. Belmont
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Patent number: 5904762Abstract: A method of making an aggregate comprising at least a carbon phase and a silicon-containing species phase is disclosed. The method involves introducing a first feedstock into a first stage of a multi-stage reactor, and introducing a second feedstock into the reactor at a location downstream of the first stage. The first and second feedstock comprise a carbon black-yielding feedstock, and at least one feedstock also comprises a silicon-containing compound. The reactor is operated at a sufficient temperature to decompose the silicon-containing compound and to pyrolize the carbon black-yielding feedstock. An additional method is disclosed which involves making an aggregate comprising a carbon phase and a silicon-containing species phase using multi-stage reactor having at least three stages for introducing a feedstock, wherein at least one of the feedstocks comprises a carbon black-yielding feedstock and wherein at least one of the feedstock comprises a silicon-containing compound.Type: GrantFiled: April 18, 1997Date of Patent: May 18, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang
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Patent number: 5877238Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared to an elastomer containing an untreated carbon black. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed is method for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: May 22, 1995Date of Patent: March 2, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis
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Patent number: 5869550Abstract: A method of improving traction in an elastomer is disclosed. The method includes the step of adding an effective amount of an aggregate comprising a carbon phase and a silicon-containing species phase to an elastomer. Also disclosed is a method of improving the dynamic compliance of an elastomer which includes the step of adding an effective amount of an aggregate comprising a carbon phase and a silicon-containing species phase to the elastomer. The elastomer is preferably used in tires and results in improved traction, for instance, improved skid resistance on ice and snow.Type: GrantFiled: April 9, 1997Date of Patent: February 9, 1999Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang
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Patent number: 5830930Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared to an elastomer containing an untreated carbon black. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: May 22, 1995Date of Patent: November 3, 1998Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis