Patents Assigned to Kraton Polymers U.S. LLC
  • Patent number: 9951160
    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: Grant
    Filed: May 14, 2015
    Date of Patent: April 24, 2018
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Adriaan Albert van der Huizen, Frank Wijnand de Wit
  • Patent number: 9944776
    Abstract: In order to provide a rubber composition having high transparency, toughness and heat-resisting property, the present invention can provide a composition comprising a neodymium-catalyzed isoprene rubber (IR) component; and a rubber polymer (RB) component selected from the group consisting of BR, 1,2-polybutadiene rubber, and SBR, wherein the amount of IR is from about 5 to 95 mass parts with the proviso that the total amount of IR and RB is 100 mass parts, wherein the composition is substantially free of silica, wherein the composition has haze of less than about 20%, and wherein the composition has Type A Durometer hardness (0 sec) of about 30 or more.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: April 17, 2018
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Fumio Naito, Yoshikatsu Nakazawa, Norio Masuko, Arwin van der Waal
  • Patent number: 9938401
    Abstract: The present invention relates to advanced flame/fire retardant compositions for fabric, upholstery, carpet, barrier, automotive, building construction, communication, and consumer electronics applications. The flame retardant composition comprises: about 5-25 wt. % hydrogenated styrenic block copolymer, about 6-40 wt. % polyolefin, about 50-80 wt. % inorganic flame retardant, about 0-5 wt. % coating, about 0-5 wt. % functionalized styrenic block copolymer, about 0-7 wt. % agri-derived heat resistant liquid, about 0.05-1.0 wt. % antioxidant, and about 0-7 wt. % optional additives such as metal deactivator, colorant, filler, and/or lubricants, wherein said composition totals 100 wt. %. An article made from the flame retardant composition, such as film, fiber, cable, and wire insulation meets various European and U.S. standards. The flame retardant compositions possess a good balance of tensile strength, elongation, flame resistance, and processability that has previously been unobtainable.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: April 10, 2018
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Jan de Boer, Xavier Muyldermans, Hiroshi Kato, Norio Masuko
  • Patent number: 9932463
    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: Grant
    Filed: March 29, 2016
    Date of Patent: April 3, 2018
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Arie Willem Van Der Waal, Joris Smit
  • Publication number: 20180016413
    Abstract: Compositions comprising (i) a hydrogenated styrenic block copolymer, (ii) an oil, and (iii) optional additives are described herein. Compositions include but are not limited to cable fillings. The styrenic block copolymer having peak molecular weight of from about 125 to about 300 kg/mol, an oil and optional additives are described herein. The block copolymer includes a B block having vinyl content of from about 35% to about 49% and an S block having a polystyrene content of from about 28% to about 40%. The compositions may form a gel having a thixotropic ratio at 25° C. of from about 5 to about 10 and further characterized by specific low, middle and high shear rate viscosities at 25° C. and shear rates of 6 s?1, 50 s?1 and 200 s?1 of from 10,000 cps to 750,000 cps, 1,000 cps to 100,000 cps and 1,000 cps to 6,000 cps, respectively; a drop point from 100° C. to 250° C.; and a cone penetration at 25° C. of from 300 dmm to 685 dmm.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 18, 2018
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Robert BENING, Ruidong DING, Huixian YANG, Catherine MARIS
  • Patent number: 9862819
    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: Grant
    Filed: June 7, 2016
    Date of Patent: January 9, 2018
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Kathryn J. Wright
  • Patent number: 9861941
    Abstract: Described herein are modified sulfonated block copolymers which comprise at least two polymer end blocks A and at least one polymer interior block B, wherein each A block contains essentially no sulfonic acid or sulfonate functional groups and each B block comprises sulfonation susceptible monomer units and, based on the number of the sulfonation susceptible monomer units, from about 10 to about 100 mol % of a functional group of formula (I) —SO2—NR1R2??(I) or of a salt thereof, methods of making them as well as methods of using them, e.g., as membrane materials for electrically or osmotically driven applications.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: January 9, 2018
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Carl L. Willis
  • Publication number: 20180002474
    Abstract: Provided herein are improved performance high vinyl block copolymer compositions. The compositions may include a block copolymer and a polyolefin. The block copolymer may have a microstructure characterized by a vinyl content of equal to or greater than about 60%. The block copolymer may be a styrenic block copolymer. The polyolefin may include a polypropylene. Additional additives may be optionally added to the composition depending on the end-use application. The compositions may find utility in the preparation of various articles such as medical products including sterilized tubing, bags, and the like, films and injection molded articles.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Yonghua ZHOU, Ruidong DING, Liqiang MA
  • Patent number: 9840574
    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: Grant
    Filed: May 14, 2015
    Date of Patent: December 12, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Adriaan Albert van der Huizen
  • Patent number: 9840600
    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: Grant
    Filed: March 29, 2016
    Date of Patent: December 12, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Fumio Naito, Yoshikatsu Nakazawa
  • Patent number: 9834625
    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: Grant
    Filed: August 14, 2015
    Date of Patent: December 5, 2017
    Assignee: KRATON POLYMERS U.S. LLC
    Inventors: Adrie A. Van Der Huizen, Carl L. Willis
  • Publication number: 20170320288
    Abstract: Methods for forming a TPE-skinned composite include forming a skin layer having at least one surface and having a thermoplastic elastomer and an adhesive promoting agent; providing a foam layer; and forming the foam layer onto the said surface of the skin layer to form the TPE-skinned composite. Optional additives such as an organo-silane compound may be added to further improve the adhesion between the skin layer and the foam. The present disclosure also provides a TPE-skinned composite including a skin layer having a thermoplastic elastomer present in an amount of greater than 90 wt. %; and an adhesive promoting agent present in an amount of from 0.5 wt. % to 10 wt. % based upon the total weight of the skin layer.
    Type: Application
    Filed: May 9, 2017
    Publication date: November 9, 2017
    Applicants: KRATON POLYMERS U.S. LLC, INTERNATIONAL AUTOMOTIVE COMPONENTS GROUP NORTH AM ERICA, INC.
    Inventors: Rose A. RYNTZ, William J. TANSEY, Matt STARLING, Giachiano BEDOGNE, Freddy VERVOORT
  • Patent number: 9790360
    Abstract: The present invention is an asphalt rejuvenator made from a specific styrenic block copolymer, bio-based oil or a bio-based oil blend, and an antioxidant system. The bio-based oil or a bio-based oil blend has a flash point of >230° C., and the asphalt rejuvenator has a maximum viscosity of <2000 cP at 180° C. when measured at 6.8/seconds shear rate. An alternate embodiment of the present invention is a pavement composition of RAP and/or RAS, asphalt rejuvenator, and virgin asphalt with and without a crosslinker. Lastly, the invention includes a method of making an asphalt rejuvenator composition referred to above, and blending it with RAP and fresh asphalt. An emulsion is also described and claimed comprising asphalt rejuvenator, water and an emulsifier.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: October 17, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Sebastian Puchalski, Robert Q. Kluttz, Christopher M. Lubbers
  • Publication number: 20170275392
    Abstract: Selectively hydrogenated block copolymers having semi-crystalline blocks hard blocks and copolymer soft blocks having a combination of excellent physical properties and solvent resistance have been discovered. The block copolymer comprises at least one A block of hydrogenated, polymerized 1,3-butadiene and at least one B block which is a random copolymer or a controlled distribution copolymer of conjugated diene and mono vinyl aromatic monomers in which the conjugated diene monomer units are selectively hydrogenated. Polar functionalized block embodiments of the block copolymers are also disclosed. Compositions comprising the block copolymer and articles made from the block copolymer have also been discovered. A method is disclosed which provides highly isotropic, high strength melt cast films of block copolymers.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 28, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: John E. Flood, Carl L. WILLIS, Robert C. Bening, Hendrik De Groot, Xavier D.D.J. Muyldermans, David T. Williamson, Dale L. Handlin, Jr., Robert Dossett
  • Patent number: 9771473
    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: July 12, 2013
    Date of Patent: September 26, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Kathryn Wright, Hiroshi Kato
  • Patent number: 9757901
    Abstract: The present invention comprises a laser sintering powder composition comprising: greater than 30 to 90 wt. % of a hydrogenated styrene-butadiene/styrene-styrene (S(EB/S)S) block copolymer or a hydrogenated styrene-butadiene-styrene (SEBS) block copolymer, or a mixture thereof; 10 to less than 70 wt. % of a C3 to C8 polyolefin, or a mixture of two or more polyolefins, 0 to 20 wt. % mineral oil, 0.2 to 1 wt. % of one or more antioxidants, 0 to 5 wt. % colorant, 0 to 20 wt. % surface modifying agent, wherein the total of the above ingredients is 100 wt. %, and optionally 0 to 5 parts by weight of a powder flow agent, based on 100 weight parts of the laser sintering powder composition. The composition has a melt flow rate of at least 20 grams/10 min. at 190° C./2.16 kg mass. The invention also comprises laser sintered articles and methods for making the same.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: September 12, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Marcus Greger, Freddy Vervoort
  • Patent number: 9758648
    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: Grant
    Filed: March 29, 2016
    Date of Patent: September 12, 2017
    Assignee: KRATON POLYMERS U.S. LLC
    Inventor: Arie Willem Van Der Waal
  • Patent number: 9758649
    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 molding 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: Grant
    Filed: March 29, 2016
    Date of Patent: September 12, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Arie Willem Van Der Waal, Marcus Juergen Greger
  • Patent number: 9752068
    Abstract: The present invention provides methods and systems for a hot melt pressure sensitive adhesive and thermoset that comprises from about 5 to about 50 wt. % of a block copolymer, from about 0 to about 75 wt. % of a tackifying resin, from about 0 to about 45 wt. % of an oil, and from about 0 to about 3 wt. % of an antioxidant.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: September 5, 2017
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Jason Drew Gillen
  • Publication number: 20170190898
    Abstract: The present invention is an asphalt rejuvenator made from a specific styrenic block copolymer, bio-based oil or a bio-based oil blend, and an antioxidant system. The bio-based oil or a bio-based oil blend has a flash point of >230 ° C., and the asphalt rejuvenator has a maximum viscosity of <2000 cP at 180° C. when measured at 6.8/seconds shear rate. An alternate embodiment of the present invention is a pavement composition of RAP and/or RAS, asphalt rejuvenator, and virgin asphalt with and without a crosslinker. Lastly, the invention includes a method of making an asphalt rejuvenator composition referred to above, and blending it with RAP and fresh asphalt. An emulsion is also described and claimed comprising asphalt rejuvenator, water and an emulsifier.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: SEBASTIAN PUCHALSKI, ROBERT Q. KLUTTZ, CHRISTOPHER M. LUBBERS