Patents by Inventor Xiangyun Wei
Xiangyun Wei 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: 11692048Abstract: A gel composition is herein disclosed. According to one embodiment, the composition comprises a (i) a styrenic block copolymer, (ii) an oil; and (iii) optional additives; wherein the styrenic block copolymer has a structure ABi or iAB, wherein A is a monoalkenyl arene block, B is a conjugated diene block, and i is an isoprene attachment. The isoprene attachment i is substantially unsaturated and the conjugated diene block B is substantially saturated. The gel composition before curing exhibits thixotropic behavior, with a viscosity ranging from about 5000 mPa·s to about 30000 mPa·s. at 25° C. and a shear rate of 20 s?1.Type: GrantFiled: September 9, 2020Date of Patent: July 4, 2023Assignee: KRATON CORPORATIONInventors: Catherine A. L. Maris, Erin B. Murphy, Robert C. Bening, Xiangyun Wei, Xavier D. Muyldermans
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Patent number: 11420416Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.Type: GrantFiled: June 20, 2014Date of Patent: August 23, 2022Assignee: Celgard, LLCInventors: Xiangyun Wei, Charles Haire
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Patent number: 11279813Abstract: A plasticized PVC composition free of phthalate and having low color is disclosed. The composition comprises a morpholide plasticizer prepared from a fatty acid selected from a tall oil fatty acid, a tall oil fatty acid monomer derived therefrom, and mixtures thereof. The fatty acid has a total carbon footprint of <95% of the total carbon footprint of a fatty acid obtained from a vegetable oil. The morpholide is prepared from the reaction of a tall oil fatty acid with morpholine in the presence of a catalyst.Type: GrantFiled: July 18, 2019Date of Patent: March 22, 2022Assignee: KRATON POLYMERS LLCInventors: Xiangyun Wei, Jason Tian, H. Jerrold Miller, Jos H. M. Lange
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Publication number: 20210355342Abstract: The disclosure relates to bio-secure equipment for protecting surfaces prone to exposure to microbes. The bio-secure equipment is for the protection of surfaces, with a coating layer comprising a sulfonated polymer, having a sufficient degree of sulfonation to kill in less than 120 minutes at least 90% of microbes in contact with the surfaces, and for extended protection of the surfaces for at least a month. The coating material is particularly suitable to provide bio-secure protection for applications including but not limited to protective facemasks, surgical instruments and supplies, garments, surfaces frequently used by members of the public that may have contagious diseases, etc., to decrease the transmission of microbes.Type: ApplicationFiled: April 19, 2021Publication date: November 18, 2021Applicant: KRATON POLYMERS LLCInventors: Vijay Mhetar, Richard Blackwell, Marc Charendoff, Marc Hein, Bert Krutzer, Roger Tocchetto, Xiangyun Wei, Carl L. Willis, Richard J. Spontak, Bharadwaja Peddinti
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Publication number: 20210162706Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.Type: ApplicationFiled: February 8, 2021Publication date: June 3, 2021Inventors: Xiangyun Wei, Charles Haire
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Patent number: 10927234Abstract: A plasticized PVC composition free of phthalate is disclosed. The composition comprises a tertiary diamide plasticizer prepared from biorenewable feedstock such as fatty acid selected from tall oil fatty acids, tall oil fatty acid monomers, fatty acids derived from tall oil fatty acid, and mixtures thereof. The tertiary diamide plasticizer is a reaction product of a reactant mixture comprising the fatty acid and one or more monocyclic diamines.Type: GrantFiled: January 17, 2019Date of Patent: February 23, 2021Assignee: Kraton Polymers U.S. LLCInventors: Xiangyun Wei, Jos H. M. Lange
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Patent number: 10913237Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.Type: GrantFiled: June 6, 2014Date of Patent: February 9, 2021Assignee: Celgard, LLCInventors: Xiangyun Wei, Charles Haire
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Publication number: 20200399408Abstract: A gel composition is herein disclosed. According to one embodiment, the composition comprises a (i) a styrenic block copolymer, (ii) an oil; and (iii) optional additives; wherein the styrenic block copolymer has a structure ABi or iAB, wherein A is a monoalkenyl arene block, B is a conjugated diene block, and i is an isoprene attachment. The isoprene attachment i is substantially unsaturated and the conjugated diene block B is substantially saturated. The gel composition before curing exhibits thixotropic behavior, with a viscosity ranging from about 5000 mPa.s to about 30000 mPa.s. at 25° C. and a shear rate of 20 s?1.Type: ApplicationFiled: September 9, 2020Publication date: December 24, 2020Applicant: KRATON POLYMERS U.S. LLCInventors: Catherine A.L. Maris, Erin B. Murphy, Robert C. Bening, Xiangyun Wei, Xavier D. Muyldermans
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Publication number: 20200040160Abstract: A plasticized PVC composition free of phthalate and having low color is disclosed. The composition comprises a morpholide plasticizer prepared from a fatty acid selected from a tall oil fatty acid, a tall oil fatty acid monomer derived therefrom, and mixtures thereof. The fatty acid has a total carbon footprint of <95% of the total carbon footprint of a fatty acid obtained from a vegetable oil. The morpholide is prepared from the reaction of a tall oil fatty acid with morpholine in the presence of a catalyst.Type: ApplicationFiled: July 18, 2019Publication date: February 6, 2020Applicant: KRATON POLYMERS LLCInventors: Xiangyun Wei, Jason Tian, H. Jerrold Miller, Jos H. M. Lange
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Publication number: 20190218367Abstract: A plasticized PVC composition free of phthalate is disclosed. The composition comprises a tertiary diamide plasticizer prepared from biorenewable feedstock such as fatty acid selected from tall oil fatty acids, tall oil fatty acid monomers, fatty acids derived from tall oil fatty acid, and mixtures thereof. The tertiary diamide plasticizer is a reaction product of a reactant mixture comprising the fatty acid and one or more monocyclic diamines.Type: ApplicationFiled: January 17, 2019Publication date: July 18, 2019Applicant: KRATON POLYMERS LLCInventors: Xiangyun Wei, Jos H. M. Lange
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Publication number: 20180258277Abstract: A gel composition is herein disclosed. According to one embodiment, the composition comprises a (i) a styrenic block copolymer, (ii) an oil; and (iii) optional additives; wherein the styrenic block copolymer comprises: a diblock polymer having a monoalkenyl arene block, designated A, a conjugated diene block, designated B, an isoprene attachment, designated i, and wherein the styrenic block copolymer can have structure ABi or iAB; the isoprene attachment i is substantially unsaturated and the conjugated diene block B is substantially saturated. The gel composition before curing exhibits thixotropic behavior, and the gel composition after curing is either solid or has a viscosity at 25° C. at a shear rate of 20 s?1 of at least 30000 mPa·s.Type: ApplicationFiled: March 9, 2018Publication date: September 13, 2018Applicant: KRATON POLYMERS U.S. LLCInventors: Catherine A.L. Maris, Erin B. Murphy, Robert C. Bening, Xiangyun Wei, Xavier D. Muyldermans
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Publication number: 20140374257Abstract: The present disclosure provides a method for melt processing a sulfonated block copolymer in which the sulfonic acid or sulfonate functional groups are partially or completely neutralized by an amine, and to articles obtained by the method. Moreover, the shaped articles which are obtained by molding a composition comprising the neutralized sulfonated block copolymer may can be converted into shaped articles which comprise the sulfonated block copolymer(s) employed in the preparation of the amine neutralized block copolymer(s). The present disclosure further provides a sulfonated block copolymer comprising which is modified by an amine of formula (Ia) wherein Het together with the nitrogen to which it is bonded represents an optionally substituted 5- or 6-membered hetero cycle.Type: ApplicationFiled: September 10, 2014Publication date: December 25, 2014Inventor: Xiangyun WEI
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Publication number: 20140302374Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.Type: ApplicationFiled: June 20, 2014Publication date: October 9, 2014Inventors: Xiangyun Wei, Charles Haire
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Publication number: 20140287322Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.Type: ApplicationFiled: June 6, 2014Publication date: September 25, 2014Inventors: Xiangyun Wei, Charles Haire
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Patent number: 8795565Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction including a simultaneous controlled machine direction relax.Type: GrantFiled: February 13, 2007Date of Patent: August 5, 2014Assignee: Celgard LLCInventors: Xiangyun Wei, Charles Haire
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Patent number: 8486556Abstract: A multi-layer microporous battery separator which comprises: a high molecular weight polypropylene layer having a melt flow index of ?1.2 measured at layer; a polyethylene layer; and a high molecular weight polypropylene layer having a melt flow index of ?1.2 measured at layer. The resulting microporous battery separator which is formed by a dry stretch process produces the microporous battery separator which has a porosity of ?37% while maintaining a gurley from 13-25 seconds and a thickness of ?25 microns.Type: GrantFiled: April 7, 2010Date of Patent: July 16, 2013Assignee: Celgard LLCInventors: Ronald W. Call, Lie Shi, Zhengming Zhang, Shizuo Ogura, Xiangyun Wei, Premanand Ramadass
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Publication number: 20130101767Abstract: The present disclosure provides a method for melt processing a sulfonated block copolymer in which the sulfonic acid or sulfonate functional groups are partially or completely neutralized by an amine, and to articles obtained by the method. Moreover, the shaped articles which are obtained by molding a composition comprising the neutralized sulfonated block copolymer may can be converted into shaped articles which comprise the sulfonated block copolymer(s) employed in the preparation of the amine neutralized block copolymer(s). The present disclosure further provides a sulfonated block copolymer comprising which is modified by an amine of formula (Ia) wherein Het together with the nitrogen to which it is bonded represents an optionally substituted 5- or 6-membered hetero cycle.Type: ApplicationFiled: October 25, 2011Publication date: April 25, 2013Applicant: KRATON POLYMERS U.S. LLCInventor: Xiangyun Wei
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Publication number: 20100209758Abstract: A multi-layer microporous battery separator which comprises: a high molecular weight polypropylene layer having a melt flow index of ?1.2 measured at layer; a polyethylene layer; and a high molecular weight polypropylene layer having a melt flow index of ?1.2 measured at layer. The resulting microporous battery separator which is formed by a dry stretch process produces the microporous battery separator which has a porosity of ?37% while maintaining a gurley from 13-25 seconds and a thickness of ?25 microns.Type: ApplicationFiled: April 7, 2010Publication date: August 19, 2010Inventors: Ronald W. Call, Lie Shi, Zhengming Zhang, Shizuo Ogura, Xiangyun Wei, Premanand Ramadass
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Publication number: 20070238017Abstract: A multi-layer microporous battery separator which comprises: a high molecular weight polypropylene layer having a melt flow index of ?1.2 measured at layer; a polyethylene layer; and a high molecular weight polypropylene layer having a melt flow index of ?1.2 measured at layer. The resulting microporous battery separator which is formed by a dry stretch process produces the microporous battery separator which has a porosity of ?37% while maintaining a gurley from 13-25 seconds and a thickness of ?25 microns.Type: ApplicationFiled: April 7, 2006Publication date: October 11, 2007Inventors: Ronald Call, Lie Shi, Zhengming Zhang, Shizuo Ogura, Xiangyun Wei, Premanand Ramadass
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Publication number: 20070196638Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction including a simultaneous controlled machine direction relax.Type: ApplicationFiled: February 13, 2007Publication date: August 23, 2007Inventors: Xiangyun Wei, Charles Haire