Patents by Inventor Krishnamachari Gopalan
Krishnamachari Gopalan 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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Publication number: 20230363492Abstract: A shoe midsole composed of a foamed peroxide-crosslinked polyolefin elastomer includes a silane-grafted polyolefin component and an elastomer component. The elastomer component includes ethylene vinyl acetate copolymer and a component selected from the group consisting of polyolefin elastomers, anhydride modified ethylene copolymers, and combinations thereof. The silane-grafted polyolefin component is crosslinked to the elastomer component with C-C bonds. The foamed peroxide-crosslinked polyolefin elastomer includes a plurality of closed cells. Characteristically, the foamed peroxide-crosslinked polyolefin elastomer is substantially free of silane crosslinking as formed and substantially free of water.Type: ApplicationFiled: September 28, 2021Publication date: November 16, 2023Applicant: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari GOPALAN, Vahid SHAAYEGAN
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Publication number: 20230363490Abstract: A shoe midsole composed of a foamed peroxide-crosslinked polyolefin elastomer includes a silane-grafted polyolefin component, an elastomeric component, and additives dispersed in the foamed peroxide-crosslinked polyolefin elastomer. The elastomer component includes one or more elastomeric polymers selected from the group consisting of ethylene vinyl acetate copolymer, polyolefin elastomers, olefin block copolymer, polyoctenamer, anhydride modified ethylene copolymers, ethylene propylene diene terpolymer, and combinations thereof. The silane-grafted polyolefin component and elastomer component are crosslinked with C—C bonds. Advantageously, the foamed peroxide-crosslinked polyolefin elastomer is substantially free of silane crosslinking as formed and substantially free of water. Characteristically, the additives and one or more elastomeric polymers are in sufficient amount that a melting temperature of crystalline regions in the foamed peroxide-crosslinked polyolefin elastomer is greater than 100° C.Type: ApplicationFiled: September 28, 2021Publication date: November 16, 2023Applicant: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari GOPALAN, Vahid SHAAYEGAN
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Patent number: 11684115Abstract: A roofing membrane and a method of making the same is provided. The roofing membrane includes a top layer having a flame retardant and a first silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3; a scrim layer; and a bottom layer having a flame retardant and a second silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3. The top and bottom layers of the roofing membrane both exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).Type: GrantFiled: September 27, 2018Date of Patent: June 27, 2023Assignee: COOPER-STANDARD AUTOMOTIVE INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Publication number: 20230140775Abstract: A thermoplastic vulcanizate (TPV) composition includes a dispersed crosslinked phase having residues of a first polymer that includes a first silane grafted polyolefin or residues thereof. The TPV composition also includes a continuous thermoplastic phase having residues of a second polymer component selected from the group consisting of polypropylene resin, polypropylene copolymers and combinations thereof. Characteristically, the dispersed crosslinked phase is dispersed in the continuous thermoplastic phase.Type: ApplicationFiled: November 3, 2022Publication date: May 4, 2023Inventor: Krishnamachari GOPALAN
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Publication number: 20220389202Abstract: A tread additive composition to be combined with a base composition for tire treads to achieve low rolling resistance includes an elastomeric component, a first additive component, and a second additive component. The elastomeric component includes a first silane-grafted polyolefine elastomer. The first additive component including a polymer carrier, a reinforcing filler, silane-terminated liquid polybutadienes, and one or more process activators. The second additive component including a butadiene rubber, a hydrocarbon resin, sulfur; and one or more accelerators. Advantageously, the tread additive composition can decrease rolling resistance and improve fuel economy when combined with a base tread composition as compared to treads formed from the base tread composition without the tread additive composition.Type: ApplicationFiled: June 7, 2022Publication date: December 8, 2022Inventors: Krishnamachari GOPALAN, Robert LENHART
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Patent number: 11377514Abstract: A combined sealing member is provided that includes a composition comprising two or more polyolefin elastomers selected from the group consisting of a dense, a micro-dense and a dynamic silane-crosslinked polyolefin elastomer having a respective density of less than 0.90 g/cm3, less than 0.70 g/cm3, and less than 0.60 g/cm3. The combined sealing member exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).Type: GrantFiled: February 21, 2020Date of Patent: July 5, 2022Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Publication number: 20220056257Abstract: A footwear article is provided. The footwear article includes a shoe sole. The shoe sole includes a crosslinked foam polyolefin elastomer having a density less than 0.88 g/cm3, the crosslinked foam polyolefin elastomer including: a silane-grafted polyolefin elastomer, a silane-grafted olefin block copolymer, a polyolefin elastomer (POE), an olefin block copolymer (OBC), or a combination thereof; an ethylene vinyl acetate (EVA) copolymer; a crosslinker; a condensation catalyst; and a foaming agent. The shoe sole exhibits a compression set of from about 1.0% to about 50.0%, as measured according to ASTM D 395 (48 hrs @ 50° C.).Type: ApplicationFiled: November 1, 2021Publication date: February 24, 2022Applicant: Cooper-Standard Automotive Inc.Inventor: Krishnamachari Gopalan
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Publication number: 20210388617Abstract: A roofing accessory is disclosed includes an elastomeric layer including non-crosslinked elastomeric material having a composition including: (A) 100 PHR of a base polymer including ethylene propylene diene monomer (EPDM) having a sum of ethylidene norbornene (ENB) content, vinyl norbornene (VNB) content, norbornadiene content, and 1,4 hexadiene content and/or dicyclopentadiene (DCPD) content from about 0 to 9 wt. %, (B) about 50 to 300 PHR of calcium carbonate; and (C) about 50 to 200 PHR of a dewaxed heavy paraffinic process oil(s). The accessory may further include a butyl-based layer adjacent to the elastomeric layer. The accessory may also include a protective layer configured as a liner, the protective layer arranged adjacent to the butyl-based layer such that the butyl-based layer is sandwiched between the first and protective layers. The accessory may have elongation at break of up to about 1800%.Type: ApplicationFiled: June 16, 2021Publication date: December 16, 2021Inventors: Krishnamachari GOPALAN, Robert J. LENHART, Gending JI, Jacob La FOREST
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Publication number: 20210198465Abstract: A roofing membrane includes (A) about 40 to 75 wt. % silane-crosslinked polyolefin elastomer/plastomer component including a blend of at least three different polyolefin elastomers, each having different melt mass-flow rate (MFR), measured at 190° C. under a 2.16 kg load, in a range of about 3.0 to 25.0 g/10 min, (E) about 1 to 20 wt. % functional filler(s) including a polyolefin; (F) UV/heat stabilizer(s); (G) antioxidant(s); and (H) fire retardant(s), wt. % based on the total weight of the roofing membrane.Type: ApplicationFiled: March 16, 2021Publication date: July 1, 2021Applicant: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari GOPALAN, Gending JI, Amber TUPPER, Jacob James LAFOREST, Hwanman PARK
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Patent number: 10895335Abstract: A hose made from a composition including one or more of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; and one or more of fibers, polyamide powder, and ultra high molecular weight polyethylene powder. A hose comprising an outermost layer formed from a composition comprising: (A) at least one of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; and (B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers.Type: GrantFiled: July 25, 2019Date of Patent: January 19, 2021Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Philippe Moureaux
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Patent number: 10779608Abstract: An elastomeric article is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3. The elastomeric article can exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.). The silane-crosslinked polyolefin elastomer can include a first polyolefin having a density less than 0.86 g/cm3, a second polyolefin having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, and a condensation catalyst.Type: GrantFiled: December 8, 2017Date of Patent: September 22, 2020Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Patent number: 10774168Abstract: A silane-grafted polyolefin composition is disclosed and includes a desired reduced specific weight material. The composition finds application in a wide array of uses, and in particular automotive and uses such as windshield wipers, where this composition is used in place of conventional materials such as TPV and EPDM rubber formulations.Type: GrantFiled: March 9, 2019Date of Patent: September 15, 2020Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji
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Patent number: 10774955Abstract: A silane-grafted polyolefin composition is disclosed, and includes a desired reduced specific weight material. The composition finds application in a wide array of uses, and in particular automotive and uses such as hoses, where this composition is used in place of conventional materials such as TPV and EPDM rubber formulations.Type: GrantFiled: June 7, 2018Date of Patent: September 15, 2020Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Gending Ji, Robert J. Lenhart, Eric Nicolino, Pierre Youinou
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Publication number: 20200199349Abstract: A footwear article is provided. The footwear article includes a shoe sole. The shoe sole includes a crosslinked foam polyolefin elastomer having a density less than 0.88 g/cm3, the crosslinked foam polyolefin elastomer including: a silane-grafted polyolefin elastomer, a silane-grafted olefin block copolymer, a polyolefin elastomer (POE), an olefin block copolymer (OBC), or a combination thereof; an ethylene vinyl acetate (EVA) copolymer; a crosslinker; a condensation catalyst; and a foaming agent. The shoe sole exhibits a compression set of from about 1.0% to about 50.0%, as measured according to ASTM D 395 (48 hrs @ 50° C.).Type: ApplicationFiled: September 22, 2019Publication date: June 25, 2020Applicant: Cooper-Standard Automotive Inc.Inventor: Krishnamachari Gopalan
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Publication number: 20200199279Abstract: A combined sealing member is provided that includes a composition comprising two or more polyolefin elastomers selected from the group consisting of a dense, a micro-dense and a dynamic silane-crosslinked polyolefin elastomer having a respective density of less than 0.90 g/cm3, less than 0.70 g/cm3, and less than 0.60 g/cm3. The combined sealing member exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).Type: ApplicationFiled: February 21, 2020Publication date: June 25, 2020Applicant: Cooper-Standard Automotive Inc.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Patent number: 10689471Abstract: A microdense sealing member is provided. The microdense sealing member includes a composition having a foamed silane-crosslinked polyolefin elastomer with a density less than 0.70 g/cm3. The microdense sealing member can exhibit a compression set of from about 5.0% to about 35.0% measured according to ASTM D 395 (22 hrs @ 70° C.). The foamed silane-crosslinked polyolefin elastomer can be produced from a blend including a first polyolefin having a density less than 0.86 g/cm3, a second polyolefin having a crystallinity less than 60° C., a silane crosslinker, a grafting initiator, a condensation catalyst, and a microencapsulated foaming agent.Type: GrantFiled: December 8, 2017Date of Patent: June 23, 2020Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Patent number: 10689470Abstract: A static sealing member is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3. The static sealing member can exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.). The silane-crosslinked polyolefin elastomer can include a first polyolefin having a density less than 0.86 g/cm3, a second polyolefin having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, and a condensation catalyst.Type: GrantFiled: December 8, 2017Date of Patent: June 23, 2020Assignee: COOPER-STANDARD AUTOMOTIVE, INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Patent number: 10570236Abstract: A combined sealing member is provided that includes a composition comprising two or more polyolefin elastomers selected from the group consisting of a dense, a micro-dense and a dynamic silane-crosslinked polyolefin elastomer having a respective density of less than 0.90 g/cm3, less than 0.70 g/cm3, and less than 0.60 g/cm3. The combined sealing member exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).Type: GrantFiled: December 8, 2017Date of Patent: February 25, 2020Assignee: Cooper-Standard Automotive Inc.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
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Publication number: 20190346072Abstract: A hose made from a composition including one or more of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; and one or more of fibers, polyamide powder, and ultra high molecular weight polyethylene powder. A hose comprising an outermost layer formed from a composition comprising: (A) at least one of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; and (B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers.Type: ApplicationFiled: July 25, 2019Publication date: November 14, 2019Applicant: Cooper-Standard Automotive, Inc.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Philippe Moreaux
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Patent number: 10371292Abstract: A hose made from a composition including one or more of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; an one or more of fibers, polyamide powder, and ultra high molecular weight polyethylene powder. A hose comprising an outermost layer formed from a composition comprising: (A) at least one of EPR, EPDM, a silane-grafted polyolefin and a siliconemodified polyolefin; and (B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers.Type: GrantFiled: July 1, 2015Date of Patent: August 6, 2019Assignee: COOPER-STANDARD AUTOMOTIVE INC.Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Philippe Moreaux