Patents Represented by Attorney Dean F. Vance
  • Patent number: 7332542
    Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: February 19, 2008
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Robert C. Bening, Dale L. Handlin, Jr., Larry L. Sterna, Carl L. Willis
  • Patent number: 7267855
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: September 11, 2007
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Dale Lee Handlin, Jr., Carl Lesley Willis, Margaret Ann Burns Clawson, Hendrik de Groot, Keith Edward Eiden
  • Patent number: 7262248
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono vinyl aromatics and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: August 28, 2007
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Kathryn J. Wright, Sharman K. McGilbert
  • Patent number: 7169848
    Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: January 30, 2007
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Robert C. Bening, Dale L. Handlin, Jr., Larry L. Sterna, Carl L. Willis
  • Patent number: 7141621
    Abstract: The present invention relates to gels prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be combined with tackifying resins, oils and other components to form the gels of the present invention.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: November 28, 2006
    Assignee: Kraton Polymers U.S. LLC
    Inventors: David J. St. Clair, Dale Lee Handlin, Jr., Carl L. Willis
  • Patent number: 7012118
    Abstract: The present invention relates to a photopolymerizable composition, which comprises: (a) a block copolymer component comprising an unhydrogenated styrene diene block copolymer and a hydrogenated controlled distribution styrene diene block copolymer (b) one or more photopolymerizable ethylenically unsaturated low molecular weight compounds, (c) one or more polymerization initiators, and optionally (d) from 0 to 40% by weight, based on the total photopolymerizable compositions, of one or more auxiliaries. The invention also includes flexographic printing plates derived from said photopolymerizable compositions, and flexographic printing relief forms prepared from said plates.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: March 14, 2006
    Assignee: KRATON Polymers U.S. LLC
    Inventors: David Romme Hansen, David John St. Clair, Donn Anthony Dubois, Dale Lee Handlin, Jr., Carl Lesley Willis
  • Patent number: 7009000
    Abstract: Disclosed is an improvement to a process for preparing coupled styrenic block copolymers wherein adding from about 0.01 to about 1.5 equivalents of a metal alkyl compound per equivalent of living polymer chain ends to the cement, during or after polymerization, improves coupling efficiencies. The resultant radial styrenic block copolymers have reduced amounts of 5+ arm oligomers which can be very desirable is certain applications, such as the modification of bitumen.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: March 7, 2006
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Robert Bening, Harvey Atwood, Marinus Pieter van Dijk, Adriana Maria Petronella Ros, Barry Moore, Carl Willis, Nikolaas Jan van Dijk
  • Patent number: 6987142
    Abstract: The present invention relates to adhesives and sealants prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be combined with tackifying resins, oils and other components to form the adhesives and sealants of the present invention.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: January 17, 2006
    Assignee: KRATON Polymers U.S. LLC
    Inventors: David J. St. Clair, Dale Lee Handlin, Jr., Carl L. Willis
  • Patent number: 5602193
    Abstract: A stable aqueous emulsions of epoxy resins are provided using an epoxy-functional polyether having the formula: ##STR1## wherein Q is A or B, R.sup.1 is independently a divalent hydrocarbon group, R.sup.2 is a divalent aliphatic group optionally containing ether or ester groups or together with R.sup.3 or R.sup.4 form a spiro ring optionally containing heteroatoms, and R.sup.3 and R.sup.4 are independently hydrogen or R.sup.3 or R.sup.4 together with R.sup.2 form a spiro ring optionally containing heteroatoms such as oxygen, X and Y are independently hydrogen, methyl or ethyl group with the provision that if X is methyl or ethyl, Y is hydrogen or if Y is methyl or ethyl, X is hydrogen and n+m+o is a positive real number from about 15 to 450, and where Q is B, n+o is a real number in an amount effective to provide emulsifying property.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: February 11, 1997
    Assignee: Shell Oil Company
    Inventor: Charles J. Stark
  • Patent number: 5015695
    Abstract: Novel heat-curable elastomeric polymers are produced which comprise an elastomeric base polymer modified by the presence on the elastomeric base polymer molecule of at least one pendant carboxylic acid ester group wherein the ester moiety contains certain types of reactive unsaturation. In a preferred embodiment, the base polymer is a selectively hydrogenated block copolymer of the poly(vinylaromatic compound)/polyalkadiene type, and the ester moiety is propargyl.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: May 14, 1991
    Assignee: Shell Oil Company
    Inventor: Pui K. Wong
  • Patent number: 5001221
    Abstract: In the process for the production of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, the liquid portion of the product mixture is suitable for recycle as the catalyst composition mixture in subsequent polymerizations when the linear alternating polymer produced has a limiting viscosity number, measured in m-cresol at 60.degree. C., of from about 0.5 dl/g to about 2.5 dl/g and a melting point of at least 225.degree. C.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: March 19, 1991
    Assignee: Shell Oil Company
    Inventor: Johannes A. M. Van Broekhoven
  • Patent number: 4988770
    Abstract: Novel heat-curable elastomeric polymers are produced which comprise an elastomeric base polymer modified by the presence on the elastomeric base polymer molecule of at least one pendant carboxylic acid ester group wherein the ester moiety is alkyl arylcyclobutene. In a preferred embodiment, the base polymer is a selectively hydrogenated block copolymer of the poly(vinylaromatic compound)/polyalkadiene type, and the ester moiety is methylbenzocyclobutene.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: January 29, 1991
    Assignee: Shell Oil Company
    Inventor: Pui K. Wong
  • Patent number: 4978719
    Abstract: Novel heat-curable elastomeric polymers comprise an elastomeric base polymer modified by the presence on the elastomeric base polymer molecule of at least one pendant carboxylic acid ester group wherein the ester moiety contains certain types of reactive unsaturation. In a preferred embodiment, the base polymer is a selectively hydrogenated block copolymer of the poly(vinylaromatic compound)polyalkadiene type, and the ester moiety is propargyl.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: December 18, 1990
    Assignee: Shell Oil Company
    Inventor: P. K. Wong
  • Patent number: 4978721
    Abstract: Novel heat-curable elastomeric polymers comprise an elastomeric base polymer modified by the presence on the elastomeric base polymer molecule of at least one pendant carboxylic acid ester group wherein the ester moiety is alkyl arylcyclobutene. In a preferred embodiment, the base polymer is a selectively hydrogenated block copolymer of the poly-(vinylaromatic compound)/polyalkadiene type, and the ester moiety is methylbenzocyclobutene.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: December 18, 1990
    Assignee: Shell Oil Company
    Inventor: Pui-Kwan Wong
  • Patent number: 4970294
    Abstract: A process for polymerizing carbon monoxide and at least one C.sub.3 -C.sub.10 .alpha.-olefin in the presence of a catalyst comprising palladium, a non-noble transition metal salt of an acid with a pKa of less than 2, and a bisphosphine compound, in the presence of a diluent comprising at least 5 volume percent of an aliphatic primary alcohol, and at least 75 volume percent of at least one of a aliphatic tertiary mono-alcohol or an aromatic hydrocarbon, forming a copolymer.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: November 13, 1990
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Richard L. Wife
  • Patent number: 4968754
    Abstract: Functionalized, selectively hydrogenated block copolymers are produced by reacting a maleic acid compound with a selectively hydrogenated block copolymer of monoalkenyl aromatic compound and conjugated alkadiene having within the aromatic portion monomer units containing a benzocyclobutene moiety.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: November 6, 1990
    Assignee: Shell Oil Company
    Inventor: Pui K. Wong
  • Patent number: 4965341
    Abstract: A process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon employs a novel catalyst composition form from a palladium compound, the anion of certain string acids and a bidentate ligand of sulfur. The copolymer of carbon monoxide and a styrene monomer by such process is regioregular but not stereoregular.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: October 23, 1990
    Assignee: Shell Oil Company
    Inventors: Johannes A. Van Doorn, Eit Drent
  • Patent number: 4960865
    Abstract: The present invention relates to an improved process for working up a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon by washing the polymer with hot water.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: October 2, 1990
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Zaida Diaz, William W. C. Hart
  • Patent number: 4960857
    Abstract: Linear alternating copolymers of carbon monoxide and an unsaturated bicyclic carboxylic acid compound are produced in the presence of a catalyst composition formed from a palladium compound, an anion of certain strong acids and a bidentate ligand of nitrogen. When the bidentate ligand is a bidentate ligand of phosphorus and an ethylenically unsaturated hydrocarbon is also present, a mixture of polymers is produced which includes the linear alternating copolymer.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: October 2, 1990
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Patent number: 4960747
    Abstract: Diphosphines having at least one heterocyclic substituent that includes at least one oxygen, sulphur, or nitrogen atom in a five or six membered ring are useful components in palladium catalyst compositions which have been used to polymerize carbon monoxide and olefinically unsaturated compounds. Remaining substituents, if any, are carbocyclic hydrocarbon groups such as phenyls which are preferably substituted with polar groups in a ring position ortho to the phosphorus. The phosphorus atoms in the diphosphine are connected by a bridging group that contains at least one carbon atom.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: October 2, 1990
    Assignee: Shell Oil Company
    Inventors: Johannes A. Van Doorn, Richard L. Wife, Petrus H. M. Budzelaar