Patents by Inventor Chon Y. Lin
Chon Y. Lin 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).
-
Patent number: 9365788Abstract: This invention is directed to a two-step process for the preparation of improved poly alpha olefins wherein the first step involves oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst and the second step involves oligomerization of at least a portion of the product from the first step in the presence of an oligomerization catalyst. The dimer product from the first oligomerization is characterized by a tri-substituted vinylene olefin content of at least 25 wt %.Type: GrantFiled: September 12, 2012Date of Patent: June 14, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Craig J. Emett, Mark P. Hagemeister, Bruce A. Harrington, Chon Y. Lin, Phillip T. Matsunaga, Charles J. Ruff, Kevin B. Stavens
-
Publication number: 20130253244Abstract: This invention is directed to a two-step process for the preparation of improved poly alpha olefins wherein the first step involves oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst and the second step involves oligomerization of at least a portion of the product from the first step in the presence of an oligomerization catalyst. The dimer product from the first oligomerization is characterized by a tri-substituted vinylene olefin content of at least 25 wt %.Type: ApplicationFiled: September 12, 2012Publication date: September 26, 2013Inventors: Craig J. Emett, Mark P. Hagemeister, Bruce A. Harrington, Chon Y. Lin, Phillip T. Matsunaga, Charles J. Ruff, Kevin B. Stavens
-
Patent number: 7622523Abstract: The present invention relates to radiation resistant plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.Type: GrantFiled: February 9, 2005Date of Patent: November 24, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Wen Li, Chon Y. Lin, Bryan R. Chapman, Bruce R. Lundmark, David J. Lohse
-
Patent number: 7619038Abstract: This invention relates to homogeneous blends of: 1) from 60 to 99 weight percent of one or more semi-crystalline polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-crystalline polymer comprising propylene and from 0 to 5 weight % alpha-olefin comonomer (based upon the weight of the polymer), said semi-crystalline polymers each having a melting point between 100 and 170° C. and a melt flow rate of 200 dg/min or less; and 2) from 1 to 40 weight % of one or more semi-amorphous polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-amorphous polymer comprising propylene and from 5 to 12 weight % of one or more C2 and or C4 to C10 alpha-olefin comonomers, said semi-amorphous polymers each having: a) 10 to 50 percent crystallinity or less; b) a melt flow rate of 200 dg/min or less; c) a DSC melting point (second melt Tm) of 130° C.Type: GrantFiled: December 9, 2005Date of Patent: November 17, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Aspy K. Mehta, Chia Cheng, Sudhin Datta, Wen Li, Chon Y. Lin, Srivatsan S. Iyer
-
Patent number: 7319077Abstract: This invention relates to a nonwoven article comprising a heterogeneous blend comprising: 1) from 60 to 99 weight percent of one or more semi-crystalline polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-crystalline polymer comprising propylene and from 0 to 5 weight % alpha-olefin comonomer (based upon the weight of the polymer), said semi-crystalline polymers each having a melting point between 100 and 170° C. and a melt flow rate of 2000 dg/min or less; and 2) from 1 to 40 weight % of one or more semi-amorphous polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-amorphous polymer comprising propylene and from 10 to 25 weight % of one or more C2 and or C4 to C10 alpha-olefin comonomers, said semi-amorphous polymers each having: a) heat of fusion of 4 to 70 J/g; b) a Melt Flow Rate of 0.Type: GrantFiled: December 9, 2005Date of Patent: January 15, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Aspy K. Mehta, Chia Yung Cheng, Sudhin Datta, Wen Li, Chon Y. Lin, Srivatsan S. Iyer
-
Patent number: 6784269Abstract: This invention relates to propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from 4.0 to 20.0. The propylene homopolymer composition may be prepared in a multiple stage polymerization process using the same metallocene component in at least two stages. The composition may comprise isotactic homopolymer in one embodiment, and have a hexane extractables of less than 2 wt % in one embodiment. The composition is useful in making films.Type: GrantFiled: June 20, 2002Date of Patent: August 31, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Chon Y. Lin, Michael C. Chen, Aspy K. Mehta, Rajan K. Chudgar
-
Patent number: 6583227Abstract: This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films.Type: GrantFiled: March 6, 2001Date of Patent: June 24, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventors: Aspy K. Mehta, Michael C. Chen, James J. McAlpin, Anthony N. Speca, Kelly Tormaschy, Chon Y. Lin
-
Patent number: 6576306Abstract: This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films.Type: GrantFiled: March 6, 2001Date of Patent: June 10, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventors: Aspy K. Mehta, Michael C. Chen, James J. McAlpin, Anthony N. Speca, Kelly Tormaschy, Chon Y. Lin
-
Publication number: 20030088022Abstract: This invention relates to propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from 4.0 to 20.0. The propylene homopolymer composition may be prepared in a multiple stage polymerization process using the same metallocene component in at least two stages. The composition may comprise isotactic homopolymer in one embodiment, and have a hexane extractables of less than 2 wt % in one embodiment. The composition is useful in making films.Type: ApplicationFiled: June 20, 2002Publication date: May 8, 2003Inventors: Chon Y. Lin, Michael C. Chen, Aspy K. Mehta, Rajan K. Chudgar
-
Publication number: 20010044506Abstract: This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films.Type: ApplicationFiled: March 6, 2001Publication date: November 22, 2001Inventors: Aspy K. Mehta, Michael C. Chen, James J. McAlpin, Anthony N. Speca, Kelly Tormaschy, Chon Y. Lin
-
Publication number: 20010039314Abstract: This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films.Type: ApplicationFiled: March 6, 2001Publication date: November 8, 2001Inventors: Aspy K. Mehta, Michael C. Chen, James J. McAlpin, Anthony N. Speca, Kelly Tormaschy, Chon Y. Lin