Patents by Inventor Yunwa W. Cheung
Yunwa W. Cheung 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: 9352537Abstract: Compositions suitable for film comprise at least one ethylene/?-olefin interpolymer, wherein the ethylene/?-olefin interpolymer may have, for example, a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm>?2002.9+4538.5(d)?2422.2(d)2.Type: GrantFiled: January 16, 2014Date of Patent: May 31, 2016Assignee: Dow Global Technologies LLCInventors: David W. Fuchs, Pradeep Jain, Mehmet Demirors, Pak-Meng Cham, Yunwa W. Cheung
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Patent number: 8912282Abstract: Polymer blends comprise at least one ethylene/?-olefin interpolymer and one or more oil. The oil can be an aromatic oil, napththenic oil, paraffinic oil or a combination thereof. The ethylene/?-olefin interpolymers are random block copolymers comprising at least a hard block and at least a soft block. The resulting blends can be used to make flexible molded articles.Type: GrantFiled: July 21, 2010Date of Patent: December 16, 2014Assignee: Dow Global Technologies LLCInventors: Mahalia Soediono, Patricia Ansems Bancroft, Caroline Woelfle, Stephen M. Hoenig, Yunwa W. Cheung
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Patent number: 8816006Abstract: Compositions suitable for film comprise at least one ethylene/?-olefin interpolymer, wherein the ethylene/?-olefin interpolymer may have, for example, a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm>?2002.9+4538.5(d)?2422.2(d)2.Type: GrantFiled: March 15, 2006Date of Patent: August 26, 2014Assignee: Dow Global Technologies LLCInventors: David W. Fuchs, Pradeep Jain, Mehmet Demirors, Pak-Meng Cham, Yunwa W. Cheung
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Publication number: 20140141228Abstract: Compositions suitable for film comprise at least one ethylene/?-olefin interpolymer, wherein the ethylene/?-olefin interpolymer may have, for example, a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm>?2002.9+4538.5(d)?2422.2(d)2.Type: ApplicationFiled: January 16, 2014Publication date: May 22, 2014Applicant: Dow Global Technologies LLCInventors: David W. Fuchs, Pradeep Jain, Mehmet Demirors, Pak-Meng Cham, Yunwa W. Cheung
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Patent number: 8721827Abstract: This invention relates to methods of forming an elastic, breathable film/nonwoven layer laminate. In particular, the invention pertains to elastic polymer compositions that can be more easily processed on cast film lines, extrusion lamination or coating lines. The compositions of the present invention preferably comprise an elastomeric polyolefin resin and a high pressure low density type resin.Type: GrantFiled: August 21, 2012Date of Patent: May 13, 2014Assignee: Dow Global Technologies LLCInventors: Andy C. Chang, Stephen M. Hoenig, Yunwa W. Cheung, Daniel G. Moldovan, Wenbin Liang, Charles F. Diehl
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Patent number: 8609779Abstract: The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.Type: GrantFiled: November 21, 2012Date of Patent: December 17, 2013Assignee: Dow Global Technologies LLCInventors: William J. Harris, John D. Weaver, Brian W. Walther, Stephen F. Hahn, Yunwa W. Cheung, Pankaj Gupta, Thoi H. Ho, Kenneth N. Reichek, Selim Yalvac, Teresa P. Karjala, Benjamin R. Rozenblat, Cynthia L. Rickey
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Publication number: 20130048204Abstract: This invention relates to methods of forming an elastic, breathable film/nonwoven layer laminate. In particular, the invention pertains to elastic polymer compositions that can be more easily processed on cast film lines, extrusion lamination or coating lines. The compositions of the present invention preferably comprise an elastomeric polyolefin resin and a high pressure low density type resin.Type: ApplicationFiled: August 21, 2012Publication date: February 28, 2013Applicant: Dow Global Technologies LLCInventors: Andy C. Chang, Stephen M. Hoenig, Yunwa W. Cheung, Daniel G. Moldovan, Wenbin Liang, Charles F. Diehl
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Patent number: 8362184Abstract: Embodiments of the invention provide a class of mesophase separated butene/?-olefin block interpolymers with controlled block sequences. The butene/?-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block butene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (‘TREF’), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the butene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.Type: GrantFiled: January 30, 2009Date of Patent: January 29, 2013Assignee: DOW Global Technologies, LLCInventors: Gary R. Marchand, Yunwa W. Cheung, Benjamin C. Poon, Jeffrey D. Weinhold, Kim L. Walton, Pankaj Gupta, Colin Li Pi Shan, Phillip D. Hustad, Roger L. Kuhlman, Edmund M. Carnahan, Eddy I. Garcia-Meitin, Patricia L. Roberts
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Patent number: 8318864Abstract: The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.Type: GrantFiled: February 21, 2011Date of Patent: November 27, 2012Assignee: Dow Global Technologies LLCInventors: William J. Harris, John D. Weaver, Brian W. Walther, Stephen F. Hahn, Yunwa W. Cheung, Pankaj Gupta, Thoi H. Ho, Kenneth N. Reichek, Selim Yalvac, Teresa P. Karjala, Benjamin R. Rozenblat, Cynthia L. Rickey
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Patent number: 8293859Abstract: Embodiments of the invention provide a class of butene/?-olefin block interpolymers. The butene/?-olefin inter-polymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block butene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (‘TREF’), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the butene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.Type: GrantFiled: January 30, 2009Date of Patent: October 23, 2012Assignee: Dow Global Technologies, LLCInventors: Gary R. Marchand, Yunwa W. Cheung, Benjamin C. Poon, Jeffrey D. Weinhold, Kim L. Walton, Pankaj Gupta, Colin Li Pi Shan, Phillip D. Hustad, Roger L. Kuhlman, Edmund M. Carnahan, Eddy I. Garcia-Meitin, Patricia L. Roberts
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Patent number: 8273068Abstract: This invention relates to polyolefin compositions. In particular, the invention pertains to elastic polymer compositions that can be more easily processed on cast film lines, extrusion lamination or coating lines. The compositions of the present invention preferably comprise an elastomeric polyolefin resin and a high pressure low density type resin.Type: GrantFiled: January 14, 2008Date of Patent: September 25, 2012Assignee: Dow Global Technologies LLCInventors: Andy C. Chang, Stephen M. Hoenig, Yunwa W. Cheung, Daniel G. Moldovan, Wenbin Liang, Charles F. Diehl
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Patent number: 8211982Abstract: The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.Type: GrantFiled: February 21, 2011Date of Patent: July 3, 2012Assignee: Dow Global Technologies LLCInventors: William J. Harris, John D. Weaver, Brian W. Walther, Stephen F. Hahn, Yunwa W. Cheung, Pankaj Gupta, Thoi H. Ho, Kenneth N. Reichek, Selim Yalvac, Teresa P. Karjala, Benjamin R. Rozenblat, Cynthia L. Rickey
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Patent number: 8124709Abstract: Embodiments of the invention provide a class of mesophase separated ethylene/?-olefin block interpolymers with controlled block sequences. The ethylene/?-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block ethylene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (‘TREF’), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.Type: GrantFiled: January 30, 2009Date of Patent: February 28, 2012Assignee: Dow Global Technologies LLCInventors: Gary R. Marchand, Yunwa W. Cheung, Benjamin C. Poon, Jeffrey D. Weinhold, Kim L. Walton, Pankaj Gupta, Colin Lipishan, Phillip D. Hustad, Roger L. Kuhlman, Edmund M. Carnahan, Eddy I. Garcia-Meitin, Patricia L. Roberts
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Patent number: 8106139Abstract: Embodiments of the invention provide a class of mesophase separated propylene/?-olefin block interpolymers with controlled block sequences. The propylene/?-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block propylene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (“TREF”), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the propylene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.Type: GrantFiled: January 30, 2009Date of Patent: January 31, 2012Assignee: Dow Global Technologies LLCInventors: Gary R. Marchand, Yunwa W. Cheung, Benjamin C. Poon, Jeffrey D. Weinhold, Kim L. Walton, Pankaj Gupta, Colin Li Pi Shan, Phillip D. Hustad, Roger L. Kuhlman, Edmund M. Carnahan, Eddy I. Garcia-Meitin, Patricia L. Roberts
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Patent number: 8084537Abstract: Disclosed herein are polymer blends comprising at least one ethylene/?-olefin interpolymer and two different poly-olefins which can be homopolymers. The ethylene/?-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/?-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.Type: GrantFiled: March 15, 2006Date of Patent: December 27, 2011Assignee: Dow Global Technologies LLCInventors: Kim L. Walton, Morgan M. Hughes, Yunwa W. Cheung
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Patent number: 8067319Abstract: A fiber is obtainable from or comprises an ethylene/?-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481?1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.Type: GrantFiled: July 19, 2010Date of Patent: November 29, 2011Assignee: Dow Global Technologies LLCInventors: Benjamin C. Poon, Yunwa W. Cheung, Shih-Yaw Lai, Ashish Sen, Hongyu Chen, Yuen-Yuen D. Chiu, Rajen M. Patel, Andy C. Chang, Antonios K. Doufas, Hong Peng
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Patent number: 7989543Abstract: An adhesive composition comprises: (i) at least one ethylene/?-olefin interpolymer, (ii) at least one tackifÊer; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/?-olefin interpolymer has a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm?858.91?1825.3(d)+1112.8(d)2. The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.Type: GrantFiled: March 15, 2006Date of Patent: August 2, 2011Assignee: Dow Global Technologies LLCInventors: Teresa P. Karjala, Selim Yalvac, Charles F. Diehl, Yunwa W. Cheung, Cynthia L. Rickey
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Publication number: 20110152437Abstract: The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.Type: ApplicationFiled: February 21, 2011Publication date: June 23, 2011Inventors: William J. Harris, John D. Weaver, Brian W. Walther, Stephen F. Hahn, Yunwa W. Cheung, Pankaj Gupta, Thoi H. Ho, Kenneth N. Reichek, Selim Yalvac, Teresa P. Karjala, Benjamin R. Rozenblat, Cynthia L. Rickey
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Publication number: 20110144240Abstract: The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.Type: ApplicationFiled: February 21, 2011Publication date: June 16, 2011Inventors: William J. Harris, John D. Weaver, Brian W. Walther, Stephen F. Hahn, Yunwa W. Cheung, Pankaj Gupta, Thoi H. Ho, Kenneth N. Reichek, Selim Yalvac, Teresa P. Karjala, Benjamin R. Rozenblat, Cynthia L. Rickey
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Patent number: 7947367Abstract: A fiber is obtainable from or comprises an ethylene/?-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and (1) cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481?1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.Type: GrantFiled: March 15, 2006Date of Patent: May 24, 2011Assignee: Dow Global Technologies LLCInventors: Benjamin C. Poon, Yunwa W. Cheung, Shih-Yaw Lai, Ashish Sen, Hongyu Chen, Yuen-Yuen D. Chiu, Rajen M. Patel, Andy C. Chang, Antonios K. Doufas, Hong Peng