Patents Assigned to Kraton Polymers U.S. LLC
  • Patent number: 9657213
    Abstract: The invention relates to a curable sealant composition broadly comprising a resealable, swellable, reactive sealant and free radical initiator; said resealable, swellable reactive sealant comprises monofunctional monomer(s), multifunctional monomer(s), reactive polymer such as unsaturated styrenic block copolymer, swellable additive, and optional components. The monofunctional monomer is a vinyl ester derivative of versatic acid with C9-C12 carbon atoms, or monoacrylate, monomethacrylate, monoacrylamide, or monomethacrylamide. The multifunctional monomer are di-, tri-, tetra-, and/or penta-functional monomers with vinyl, acrylate, methacrylate, acrylamide, or methacrylamide functionality, such as tricyclodecane dimethanol diacrylate, trimethylolpropane trimethacrylate, 1,3-butylene glycol dimethacrylate or a mixture thereof. The reactive unsaturated polymer is a styrenic block copolymer such as SBS, SIS, S-I/B-S, I-SEBS-I, and mixtures of two or more of these.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 23, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Erin B. Murphy, Duc V. Nguyen, Robert C. Bening
  • Publication number: 20170121577
    Abstract: An adhesive composition comprising: one or more block copolymers and one or more tackifying resins, wherein said one or more block copolymers comprise (i) one or more blocks of polymerized alkenyl arene monomer (A block), (ii) one or more blocks of polymerized conjugated diene monomer (B block), and optionally at least one low molecular weight (compared to B block) block of polymerized conjugated diene (C block), where the A, B, and C blocks can vary independent of each other with regard to composition and molecular weight.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: DONN DUBOIS
  • Patent number: 9637660
    Abstract: The invention relates to unique applications for the novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene/styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g/10 min at 230° C. under 2.16 kg mass according to ASTM D1238. These block copolymers are novel and have the highest melt flow rate of any styrenic block copolymer also possessing high strength and elasticity. It has applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 2, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Kathryn Janelle Wright, Troy E. Wiegand
  • Publication number: 20170114172
    Abstract: A process is provided for preparing a branched conjugated diene polymer with a molecular weight distribution Mw/Mn of at least 1.1, by anionic polymerization, comprising the following reaction steps: a) polymerizing a mixture of monomers comprising at least one conjugated diene and optionally one or more monoalkenyl arene compounds in the presence of an anionic initiator to form a living polymer; b) terminating the polymerization; and c) optionally functionalizing and/or hydrogenating the polymer so produced, wherein the mixture of monomers comprises an alpha,omega-bis(vinylphenyl)alkane as comonomer. The invention further relates to the polymer so obtained, a latex prepared therefrom, the latex, and articles made from the latex.
    Type: Application
    Filed: May 14, 2015
    Publication date: April 27, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: Adriaan Albert van der HUIZEN
  • Publication number: 20170114161
    Abstract: A process is provided for preparing a coupled polymer by anionic polymerization wherein the coupled polymer is a conjugated diene polymer comprising the following reaction steps: a) polymerizing a monomer or a mixture of monomers comprising at least one conjugated diene optionally one or more monoalkenyl arene compounds in the presence of an anionic initiator to form a living polymer arm or mixture of arms with an average apparent molecular weight greater than 2000; b) reacting the living polymer arm or arms with a polyalkenyl coupling agent; c) terminating the polymerization if any living polymers remain after step b); and d) optionally functionalizing and/or hydrogenating the coupled polymer so produced, wherein the polyalkenyl coupling agent is an alpha,omega-bis(vinylphenyl)alkane. Also provided is the polymer so prepared and its use in concentrates, aqueous emulsions and products made from aqueous emulsions.
    Type: Application
    Filed: May 14, 2015
    Publication date: April 27, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Adriaan Albert van der HUIZEN, Frank Wijnand de WIT
  • Publication number: 20170107332
    Abstract: Disclosed herein is a functionalized block copolymer comprising (a) at least one end block D comprising on average at least one amino- or phosphino-functionalized polymer unit of formula (I) and one or more additional blocks selected from the group consisting of (b) one or more A blocks substantially free of amino- or phosphino-functional groups and having a number average molecular weight of from about 1,000 to about 60,000, and has a high service temperature, and (c) one or more B blocks, wherein each block B is essentially non-functionalized, has a number average molecular weight of from about 1,000 to about 1,000,000, and has a glass transition temperature of at most about 20° C.
    Type: Application
    Filed: October 14, 2016
    Publication date: April 20, 2017
    Applicant: KRATON POLYMER U.S. LLC
    Inventors: ADRIE A. VAN DER HUIZEN, CARL L. WILLIS, MARIANNE STOL, XAVIER D. MUYLDERMANS
  • Publication number: 20170073513
    Abstract: This disclosure relates to a block copolymer composition comprising a tetra-branched block copolymer (IV) having a true number average molecular weight of 40,000 to 120,000 represented by the general formula (A-B)4X; a tri-branched block copolymer (III) having a true number average molecular weight of from 30,000 to 90,000 represented by the general formula (A-B)3X; di-branched block copolymer (II) having a true number average molecular weight of from 20,000 to 60,000 represented by the general formula (A-B)2X; and a linear diblock copolymer (I) having a true number average molecular weight of from 10,000 to 30,000 represented by the general formula A-B; where A represents a polymer block of a mono alkenyl arene; B represents a polymer block of a conjugated diene, wherein the B has a true number average molecular weight ranging from 7,000 to 20,000 g/mol; and X represents the residue of an alkoxy silane coupling agent.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 16, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: John E. FLOOD, Kathryn J. WRIGHT, Xavier D. MUYLDERMANS, Mike HENIFF, Carl L. WILLIS, Yonghua ZHOU, Aaron BROTHERS
  • Publication number: 20170066920
    Abstract: A composition comprising (i) a controlled distribution styrenic block copolymer and (ii) a thermoplastic copolyester wherein the composition has a Shore A hardness of from about 50 to about 90 and a melt flow rate of from about 15 g/10 min. to about 50 g/10 min. as determined in accordance with ASTM D 1238.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 9, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: MARCUS GREGER
  • Publication number: 20170044291
    Abstract: A coupling agent having at least two alkenylbenzene groups each covalently bonded with a nitrogen of an amine compound. The coupling agent can have the structure I: wherein Z is an amine; R1-R10 are each, independent of one another, H, an organic functional group or a terminal alkene, wherein at least one terminal alkene is on each benzene ring; m is an integer from 1 to 8.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 16, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Adrie A. VAN DER HUIZEN, Carl L. WILLIS
  • Publication number: 20170022328
    Abstract: The present invention provides an aqueous emulsion and a process for preparing an aqueous emulsion of a midblock sulfonated styrenic block copolymer comprising at least two non-sulfonated polymer end-blocks A and at least one 5 sulfonated block B comprising the steps of providing a cement of a midblock sulfonated styrenic block copolymer in a non-polar solvent wherein the non-polar solvent is a hydrocarbon compound comprising from 5 to 12 carbon atoms with a boiling point of less than 100 degree Celsius or mixture of such compounds, mixing the cement with a co-solvent to form a mixture, emulsifying the mixture optionally in the 10 presence of an emulsifier with water to produce an emulsion, and removing the hydrocarbon solvent and optionally the co-solvent from the emulsion to produce the aqueous emulsion. The resulting emulsion of the midblock sulfonated styrenic block copolymer has relatively small particle diameters.
    Type: Application
    Filed: April 1, 2015
    Publication date: January 26, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Bert KRUTZER, Coen DE OUDE
  • Publication number: 20170022329
    Abstract: The present invention concerns aqueous emulsions and a process for preparing aqueous emulsions of a midblock sulfonated styrenic block copolymer comprising at least two non-sulfonated polymer end-blocks A and at least one sulfonated block B, comprising the steps of providing a cement of a midblock sulfonated styrenic block copolymer in the apolar solvent, mixing the cement with a co-solvent to form a mixture, emulsifying the mixture in the absence of a surfactant with water to produce an emulsion, and removing the hydrocarbon solvent and any optional co-solvent from the emulsion to produce the aqueous emulsion. The resulting emulsion of the midblock sulfonated styrenic block copolymer has relatively small particle diameters.
    Type: Application
    Filed: April 1, 2015
    Publication date: January 26, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Bert KRUTZER, Coen DE OUDE
  • Publication number: 20160362545
    Abstract: Provided herein is a composition containing a hydrogenated blend of a semi-crystalline, selectively hydrogenated block copolymer, a selectively diblock copolymers lacking semi-crystalline blocks, and a low polarity fluid for cable filling applications. The block copolymer comprises blocks of semi-crystalline hydrogenated polybutadiene, blocks of poly(mono alkenyl arenes), and blocks of hydrogenated, non-crystalline conjugated dienes. The diblock copolymer comprises blocks of poly(mono alkenyl arenes) and blocks of non-crystalline poly(conjugated diene(s)). The compositions can be converted to non-flowable gels and find application as fillers for cables such as fiber optic cables.
    Type: Application
    Filed: June 7, 2016
    Publication date: December 15, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Robert C. BENING, Erin MURPHY, Carl L. WILLIS
  • Publication number: 20160362593
    Abstract: Provided herein is a dispersion composition comprising a blend of a semi-crystalline, selectively hydrogenated block copolymer and a low polarity fluid for oilfield applications. The block copolymer comprises blocks of semi-crystalline hydrogenated polybutadiene, blocks of poly(mono alkenyl arenes), and blocks of hydrogenated, non-crystalline conjugated dienes. The dispersions can be converted to thixotropic fluids or cohesive gels and find application as insulating packer fluids, fluid loss pills, drilling fluids and completion fluids.
    Type: Application
    Filed: June 7, 2016
    Publication date: December 15, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Robert C. BENING, Erin MURPHY, Carl L. WILLIS
  • Publication number: 20160362544
    Abstract: A composition is disclosed, comprising a block copolymer, at least one homopolymer or copolymer of butene, and at least one olefin homopolymer or copolymer, wherein said block copolymer has hydrogenated low-vinyl polybutadiene end blocks with a specific gravity>0.85 g/cc, and a controlled distribution midblock of polyalkenyl arene/hydrogenated diene. Although the block copolymer has a preferred linear structure as a triblock copolymer, it may also be branched or radial coupled copolymer that has at least 2 arms or more. The composition is useful for rotational molding, slush molding, injection molding, extrusion or compression molding, or thermoforming or calendering for making articles that are resistant to chemicals such as diesel fuel, for the automotive market, for example. The MFR of the block copolymer is 1 to about 50 g/10 min. at 230° C., with a wt. of 2.16 kg.
    Type: Application
    Filed: June 7, 2016
    Publication date: December 15, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: Kathryn J. Wright
  • Publication number: 20160333128
    Abstract: A process is provided for preparing a branched conjugated diene polymer with a molecular weight distribution Mw/Mn of at least 1.1, by anionic polymerization, comprising the following reaction steps: a) polymerizing a mixture of monomers comprising at least one conjugated diene and optionally one or more monoalkenyl arene compounds in the presence of an anionic initiator to form a living polymer; b) terminating the polymerization; and c) optionally functionalizing and/or hydrogenating the polymer so produced, wherein the mixture of monomers comprises an alpha,omega-bis(vinylphenyl)alkane as comonomer. The invention further relates to the polymer so obtained, a latex prepared therefrom, the latex, and articles made from the latex.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 17, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: Adriaan Albert van der HUIZEN
  • Publication number: 20160333122
    Abstract: A process is provided for preparing a coupled polymer by anionic polymerization wherein the coupled polymer is a conjugated diene polymer comprising the following reaction steps: a) polymerizing a monomer or a mixture of monomers comprising at least one conjugated diene optionally one or more monoalkenyl arene compounds in the presence of an anionic initiator to form a living polymer arm or mixture of arms with an average apparent molecular weight greater than 2000; b) reacting the living polymer arm or arms with a polyalkenyl coupling agent; c) terminating the polymerization if any living polymers remain after step b); and d) optionally functionalizing and/or hydrogenating the coupled polymer so produced, wherein the polyalkenyl coupling agent is an alpha,omega-bis(vinylphenyl)alkane. Also provided is the polymer so prepared and its use in concentrates, aqueous emulsions and products made from aqueous emulsions.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 17, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Adriaan Albert van der HUIZEN, Frank Wijnand de WIT
  • Publication number: 20160289400
    Abstract: The present invention provides a process for forming an article from a diene rubber, comprising: providing a raw diene rubber substance comprising 1,2-polybutadiene rubber component; adding to the raw diene rubber substance a peroxide as a vulcanizing agent; softening the raw diene rubber at a first temperature of not more than 200° C.; vulcanizing the diene rubber at a second temperature of not more than 200° C., with contacting the diene rubber to an ambient atmosphere; and forming from the vulcanized diene rubber an article.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: FUMIO NAITO, YOSHIKATSU NAKAZAWA
  • Publication number: 20160289429
    Abstract: The present disclosure provides a solid curable transparent rubber composition containing one or more synthetic isoprene polymer, one or more transparent polymer, one or more curing agent, additives that do not influence transparency and one or more polyalkenamers. The solid curable transparent rubber composition, once cured, has a haze of less than 30% and a total light transmission of more than 80%. The disclosure further provides a cured transparent rubber composition made thereof, and a manufacturing process for the cured composition. The present disclosure also provides an article including the rubber composition, in particular shoes with transparent soles.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: Arie Willem VAN DER WAAL
  • Publication number: 20160289432
    Abstract: The present disclosure relates to a curable transparent rubber composition containing one or more synthetic isoprene polymers, a styrenic block copolymer, a curing agent, and additives that do not influence transparency of the final composition. Once cured, the curable transparent rubber composition has a haze of less than 30% and a total light transmission of more than 80%. The disclosure further relates to a cured transparent rubber composition made thereof, and a manufacturing process for the cured composition. The present disclosure also relates to an article including the rubber composition, in particular for tubes, medical stoppers, catheters, dental dams and other medical applications and artificial nipples.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Arie Willem VAN DER WAAL, Joris SMIT
  • Publication number: 20160289430
    Abstract: The present disclosure provides a process for preparing a cured transparent rubber composition containing a synthetic isoprene polymer(s), a transparent polymer(s), a curing agent and additives. The process includes mixing the components at a temperature ranging from 50 to 130° C., curing the compound with peroxide and allowing the compound to mature. The maturated compound is fed to an injection moulding machine. The cured transparent rubber composition prepared using the methods described herein has a haze of less than 30% and a total light transmission of more than 80%. The disclosure further provides an article including the cured transparent rubber composition, in particular for medical applications and artificial nipples.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Arie Willem VAN DER WAAL, Marcus Juergen GREGER