Patents by Inventor Wenbin Liang

Wenbin Liang 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: 7737215
    Abstract: 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: Grant
    Filed: September 20, 2006
    Date of Patent: June 15, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Andy C. Chang, Stephen M. Hoenig, Yunwa W. Cheung, Daniel G. Moldovan, Wenbin Liang, Charles F. Diehl
  • Patent number: 7714071
    Abstract: Polymer blends comprises 1) at least one ethylene/?-olefin interpolymer and 2) at least one polyolefin, or at least one styrenic block copolymer, or a combination thereof. Such polyolefins include, but are not limited to, high melt strength high density polyethylene and high melt strength polypropylene. The ethylene/?-olefin interpolymers are random block copolymers comprising at least a hard block and at least a soft block. The polyolefins can be homopolymers or interpolymers. The resulting polymer blends can be used to make flexible molded articles.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: May 11, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Stephen M. Hoenig, Yunwa W. Cheung, Daniel G. Moldovan, Wenbin Liang, Chuiwah A. Cheung, Ray A. Lewis, John Newton
  • Publication number: 20100062209
    Abstract: An aqueous dispersion including (A) at least one base polymer selected from the group consisting of an ethylene-based co-polymer and a propylene-based co-polymer; (B) at least one polymeric stabilizing agent; and at least one filler; wherein the polymeric stabilizing agent is different from the at least one base polymer and is compatible with the at least one base polymer and the at least one filler, and wherein the dispersion has filler in the range of greater than 0 to about 600 parts per hundred parts of a combined amount of the at least one base polymer and the polymeric stabilizing agent is disclosed.
    Type: Application
    Filed: November 18, 2009
    Publication date: March 11, 2010
    Applicant: Dow Global Technologies Inc.
    Inventors: Ronald Wevers, James G. Kennedy, Aaron M. Bujnowski, Brad M. Moncla, Wenbin Liang
  • Patent number: 7645521
    Abstract: An aqueous dispersion including (A) at least one base polymer selected from the group consisting of an ethylene-based co-polymer and a propylene-based co-polymer; (B) at least one polymeric stabilizing agent; and at least one filler; wherein the polymeric stabilizing agent is different from the at least one base polymer and is compatible with the at least one base polymer and the at least one filler, and wherein the dispersion has filler in the range of greater than 0 to about 600 parts per hundred parts of a combined amount of the at least one base polymer and the polymeric stabilizing agent is disclosed.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: January 12, 2010
    Assignee: Dow Global Technologies, Inc.
    Inventors: Ronald Wevers, James G. Kennedy, Aaron M. Bujnowski, Brad M. Moncla, Wenbin Liang
  • Publication number: 20090324914
    Abstract: The present invention relates to film layers and compositions having improved hot tack properties. The compositions 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: Application
    Filed: July 24, 2009
    Publication date: December 31, 2009
    Applicant: Dow Global Technologies Inc.
    Inventors: Wenbin Liang, Yunwa W. Cheung, John W. Garnett, IV
  • Publication number: 20090253321
    Abstract: The present invention provides an article formed by impregnating a fibrous structure with a compound, the compound including an aqueous dispersion, the dispersion having (a) at least one polymer selected from the group consisting of an ethylene-based thermoplastic polymer, a propylene-based thermoplastic polymer, and mixtures thereof; (b) at least one polymeric stabilizing agent; and (c) water; and removing at least a portion of the water from the impregnated fibrous structure. The present invention also provides a method of forming a stiffened textile. The method may include the steps of: forming a compound, the compound including an aqueous dispersion having (a) at least one polymer selected from the group consisting of an ethylene-based thermoplastic polymer, a propylene-based thermoplastic polymer, and mixtures thereof, (b) at least one polymeric stabilizing agent, and (c) water; impregnating a textile with the compound; and removing at least a portion of the water from the impregnated textile.
    Type: Application
    Filed: December 4, 2006
    Publication date: October 8, 2009
    Inventors: Ronald Wevers, James G. Kennedy, Aaron M. Bujnowski, Brad M. Moncla, Miguel A. Prieto Goubert, Wenbin Liang
  • Patent number: 7582716
    Abstract: The present invention relates to film layers and compositions having improved hot tack properties. The compositions 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: Grant
    Filed: March 15, 2006
    Date of Patent: September 1, 2009
    Assignee: Dow Global Technologies Inc.
    Inventors: Wenbin Liang, Yunwa W. Cheung, John W. Garnett, IV
  • Publication number: 20090186985
    Abstract: The present invention relates to olefinic compositions comprising a functionalized branched olefin copolymer containing functionalized sidechains derived from olefin and at least one chain end nucleophilic heteroatom containing functional group with at least one protic hydrogen, optionally with one or more copolymerizable monomers, the copolymer characterized by having A) a Tg<?10° C. as measured by DSC; B) a Ta>100° C.; C) an elongation at break of greater than or equal to 500 percent; D) a Tensile Strength of greater than or equal to 1,500 psi (10,300 kPa) at 25° C.; E) a TMA temperature>80° C., and F) an elastic recovery of greater than or equal to 50 percent.
    Type: Application
    Filed: January 21, 2005
    Publication date: July 23, 2009
    Inventors: Roger L. Kuhlman, Timothy T. Wenzel, Yunwa W. Cheung, Phillip D. Hustad, Edmund M. Carnahan, John R. Briggs, Brian A. Jazdzewski, Wenbin Liang, Roji Mori, Kouichi Kizu, Nobuo Kawahara, Shingo Matuso, Shinichi Kojoh, Norio Kashiwa
  • Publication number: 20080295985
    Abstract: In one embodiment, the present invention provides a method of forming a cellulose article having a specific volume of less than 3 cc/gm. The method includes the step of incorporating cellulose fibers with a compound, wherein the compound includes an aqueous dispersion. The aqueous dispersion may have at least one polymer selected from the group consisting of an ethylene-based thermoplastic polymer, a propylene-based thermoplastic polymer, and mixtures thereof; at least one polymeric stabilizing agent; and water. In certain embodiments, a combined amount of the at least one polymer and the at least one stabilizing agent comprises about 25 to about 74 volume percent of the aqueous dispersion.
    Type: Application
    Filed: December 4, 2006
    Publication date: December 4, 2008
    Inventors: Brad M. Moncla, Ronald Wevers, Wenbin Liang
  • Publication number: 20080292833
    Abstract: An aqueous dispersion including (A) at least one base polymer selected from the group consisting of an ethylene-based co-polymer and a propylene-based co-polymer; (B) at least one polymeric stabilizing agent; and at least one filler; wherein the polymeric stabilizing agent is different from the at least one base polymer and is compatible with the at least one base polymer and the at least one filler, and wherein the dispersion has filler in the range of greater than 0 to about 600 parts per hundred parts of a combined amount of the at least one base polymer and the polymeric stabilizing agent is disclosed.
    Type: Application
    Filed: December 4, 2006
    Publication date: November 27, 2008
    Inventors: Ronald Wevers, James G. Kennedy, Aaron M. Bujnowski, Brad M. Moncla, Wenbin Liang
  • Publication number: 20080177242
    Abstract: 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: Application
    Filed: January 14, 2008
    Publication date: July 24, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Andy C. Chang, Stephen M. Hoenig, Yunwa W. Cheung, Daniel G. Moldovan, Wenbin Liang, Charles F. Diehl
  • Publication number: 20080146110
    Abstract: The present invention relates to nonwoven webs or fabrics. In particular, the present invention relates to nonwoven webs having superior abrasion resistance and excellent softness characteristics. The nonwoven materials comprise monocomponent fibers having a surface comprising a polyethylene, said nonwoven material having a fuzz/abrasion of less than 0.7 mg/cm3. The present invention is also related to fibers having a diameter in a range of from 0.1 to 50 denier, said fibers comprising a polymer blend, wherein the polymer blend comprises: from 40 weight percent to 80 weight percent (by weight of the polymer blend) of a first polymer which is a homogeneous ethylene/?-olefin interpolymer having: a melt index of from about 1 to about 1000 grams/10 minutes, and a density of from 0.870 to 0.
    Type: Application
    Filed: April 8, 2005
    Publication date: June 19, 2008
    Inventors: Rajen M. Patel, Gert Claasen, Wenbin Liang, Karin Katzer, Kenneth B. Stewart, Thomas Allgeuer, Jesus Nieto
  • Publication number: 20070292705
    Abstract: An aqueous dispersions including (A) at least one ethylene-based polyolefin forming a dispersed polymer phase; (B) at least one dispersing agent; and (C) water; wherein the dispersion has a pH of less than 12; and wherein the dispersed polymer phase has a volume average particle size of less than about 5 microns. In other aspects, an article or a substrate including a coating, wherein the coating was obtained from an aqueous dispersion comprising (A) at least one of an ethylene-based polyolefin and a propylene-based polyolefin; (B) at least one dispersing agent; and (C) water; wherein the dispersion had a pH of less than 12.
    Type: Application
    Filed: May 10, 2007
    Publication date: December 20, 2007
    Applicant: DOW GLOBAL TECHNOLOGIES INC.
    Inventors: Brad Moncla, Matthew Kalinowski, David Speth, Charles Diehl, Dale Schmidt, Kevin Maak, Wenbin Liang, Gary Strandburg
  • Publication number: 20070172685
    Abstract: Film layers made from formulated polymer compositions are disclosed. Film layers made from such formulated compositions have surprisingly good (for example, low) water vapor transmission rates and are particularly useful for packaging dry goods such as cereal. The polymer compositions preferably have at least one homogeneous ethylene homopolymer and at least one heterogeneously branched ethylene polymer. The homogeneous ethylene homopolymer has a molecular weight much higher than that of the heterogeneously branched ethylene polymer, although the density of each is preferably higher than about 0.95 g/cm3.
    Type: Application
    Filed: March 18, 2005
    Publication date: July 26, 2007
    Inventors: Mridula Kapur, Wenbin Liang, David Evsersdyk, Kenneth Laverdure, David Gillespie
  • Publication number: 20070155900
    Abstract: 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: Application
    Filed: January 12, 2007
    Publication date: July 5, 2007
    Applicant: Dow Global Technologies Inc.
    Inventors: Andy Chang, Stephen Hoenig, Yunwa Cheung, Daniel Moldovan, Wenbin Liang, Charles Diehl
  • Publication number: 20070149626
    Abstract: The present invention is a crosslinkable, expandable polymeric composition comprising a free-radical crosslinkable polymer, a free-radical inducing species, a crosslinking-profile modifier, and a blowing agent. Preferably, the free-radical inducing species is a low temperature free-radical inducing species.
    Type: Application
    Filed: December 24, 2004
    Publication date: June 28, 2007
    Applicant: DOW GLOBAL TECHNOLOGIES, INC.
    Inventors: Yunwa Cheung, Stephen Hahn, Wenbin Liang, Miguel Prieto Goubert, Shaofu Wu
  • Publication number: 20070082191
    Abstract: Stretch films which exhibit good puncture and impact resistance while also exhibiting resistance to defect propagation are desired. The films of the present invention have an ultimate stretch of at least 200 percent, a dart impact strength of at least about 700 gms/mil and a catastrophic failure stretch of at least 95 percent of the elongation to break value (CF of 5 or less). The films preferably comprise at least 3 layers and preferably comprise at least 50 percent by weight of polyethylene polymers.
    Type: Application
    Filed: November 29, 2004
    Publication date: April 12, 2007
    Inventors: Wenbin Liang, David Ramsey, Staci DeKunder, Kalyan Sehanobish, Jesus Nieto, John Presa, Shaun Pirtle
  • Publication number: 20070078222
    Abstract: 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: Application
    Filed: September 20, 2006
    Publication date: April 5, 2007
    Applicant: Dow Global Technologies Inc.
    Inventors: Andy Chang, Stephen Hoenig, Yunwa Cheung, Daniel Moldovan, Wenbin Liang, Charles Diehl
  • Publication number: 20060211819
    Abstract: Polymer blends comprises 1) at least one ethylene/?-olefin interpolymer and 2) at least one polyolefin, or at least one styrenic block copolymer, or a combination thereof. Such polyolefins include, but are not limited to, high melt strength high density polyethylene and high melt strength polypropylene. The ethylene/?-olefin interpolymers are random block copolymers comprising at least a hard block and at least a soft block. The polyolefins can be homopolymers or interpolymers. The resulting polymer blends can be used to make flexible molded articles.
    Type: Application
    Filed: March 15, 2006
    Publication date: September 21, 2006
    Applicant: Dow Global Technologies Inc.
    Inventors: Stephen Hoenig, Yunwa Cheung, Daniel Moldovan, Wenbin Liang, Chuiwah Cheung, Ray Lewis, John Newton
  • Publication number: 20060199887
    Abstract: A filled polymer composition comprises (i) an ethylene/?-olefin interpolymer, and (ii) a filler. The ethylene/?-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. The filled polymer compositions provided herein, in certain embodiments, have relatively higher heat resistance and improved noise, vibration and harshness properties and can be used in automotive floorings, roofings, wire and cable coating applications.
    Type: Application
    Filed: March 15, 2006
    Publication date: September 7, 2006
    Applicant: Dow Global Technologies Inc.
    Inventors: Wenbin Liang, Yunwa Cheung, Charles Diehl, Kyle Kummer