Patents Assigned to Kraton Polymers U.S. LLC
  • Publication number: 20160289420
    Abstract: The present disclosure relates to a solid curable transparent rubber composition containing a styrenic block copolymer having 2 or more poly(vinyl aromatic) blocks, a curing agent and additives. Once cured, the solid 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
  • Patent number: 9458362
    Abstract: The invention relates to a novel block copolymer comprising at least one polymeric monoalkenyl arene block and at least one polymeric myrcene block having a low and stable viscosity and having good adhesive properties when used in an adhesive composition or as a damping material. An adhesive composition is also described, preferably containing an SMS triblock optionally mixed with an SM diblock. The adhesive composition comprises: 1) a block copolymer having at least one polymeric monoalkenyl arene block and at least one polymeric myrcene block; 2) a tackifier; 3) optional plasticizer; and 4) optionally a stabilizer. Compared with adhesive compositions comprising SIS block copolymers, those comprising SMS block copolymers have lower and more stable viscosity.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: October 4, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Martine Dupont, Marianne Stol
  • Publication number: 20160263780
    Abstract: A method for the curing of aqueous latexes comprising block copolymers is disclosed. The block copolymers have the general formula A-B-A or A-B-Y-(B-A)n. The curing is conducted using vulcanization systems that are free of guanidine and thiuram compounds. The cured latexes are useful in the manufacture of elastic films, surgical, examination and electrical insulation gloves, industrial gloves and condoms.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: Wouter DE JONG
  • Patent number: 9429366
    Abstract: A core unit for an energy recovery system for exchanging heat and vapor between two independent intake and exhaust airstreams without intermixing thereof, the core unit having a fibrous microporous support substrate and a sulfonated block copolymer having at least one end block A and at least one interior block B wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate ester functional groups based on the number of monomer units, and wherein the sulfonated block copolymer is laminated on the microporous support substrate.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 30, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Donn Dubois
  • Patent number: 9422422
    Abstract: In order to provide a rubber composition having high transparency and toughness, the present invention can provide a crosslinked rubber composition, being substantially free of silica, comprising a first olefin polymer having refractive index of between 1.500 to 1.525 at 23 degree C.; and a second olefin polymer which is different from the first olefin polymer, wherein the composition has haze of 20% or less on 2 mm thick sheet, measured according to JIS K7136, and wherein the composition has Type A Durometer hardness (0 sec) of 35 or more, measured according to JIS K6253.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: August 23, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Fumio Naito, Yoshikatsu Nakazawa
  • Patent number: 9394414
    Abstract: The present disclosure relates to films such as membranes and coatings and to coated articles. The films comprise a combination of at least one elastomeric styrenic block copolymer which is optionally functionalized with functional groups different from sulfonic acid or sulfonate ester functional groups, and at least one sulfonated block copolymer. Films comprising the optionally functionalized block copolymer(s) and the additional sulfonated block copolymer(s) are elastic and are moisture-vapor permeable, and thus useful as coatings in breathable clothing and footwear, industrial workwear including cleanroom coveralls, in medical applications such as wound dressings and protective clothing, for bed sheets and mattress or seat covers, and other non-apparel applications.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: July 19, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: John Flood, Richard Blackwell, Martin Ehrlich, Todd Schroeder, Jerzy Gumulka
  • Patent number: 9394472
    Abstract: The invention relates to a selectively hydrogenated isoprene-styrene diblock copolymer having a polystyrene content of at least 40 wt. %, which when added to an oil-based mud composition, substantially reduces fluid loss. The polystyrene in the diblock has a true molecular weight greater than 60 kg/mole and the total apparent molecular weight of the diblock copolymer is at least 160 kg/mole. The drilling mud that contains about 0.5 pounds per barrel to about 10 pounds per barrel of a selectively hydrogenated isoprene-styrene diblock copolymer and a weighting agent, resulting in a drilling fluid composition exhibiting good suspension of the weighting agent and improved fluid loss performance.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: July 19, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Erin Murphy, Robert Bening
  • Patent number: 9364825
    Abstract: A functionalized block copolymer polymerized using vinylbenzylamino derivative monomers for use in such applications as anionic exchange membranes.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: June 14, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Carl L. Willis, Adrie A. van der Huizen
  • Patent number: 9365662
    Abstract: Sulfonated block copolymer composition formed by dissolving in an aprotic polar solvent at least one sulfonated block copolymer having at least one end block A and at least one interior block B wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol % sulfonic acid or sulfonate ester functional groups based on the number of sulfonation susceptible monomer units of the B block.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: June 14, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Carl Lesley Willis
  • Patent number: 9359523
    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: August 27, 2014
    Date of Patent: June 7, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Donn Anthony Dubois, John E. Flood
  • Patent number: 9321932
    Abstract: Articles with enhanced tensile strength and comfort are prepared from a latex comprising water and a styrenic block copolymer, wherein the styrenic block copolymer has 2 or more poly(vinyl aromatic) blocks and at least one block of polymerized conjugated diene, wherein the styrenic block copolymer has a weight average molecular weight of 150,000 to 250,000, the poly(vinyl aromatic) blocks have a weight average molecular weight ranging from 9,000 to 15,000, and the content of poly(vinylaromatic) blocks in the styrenic block copolymer ranges from 8 to 15% wt, based on the total styrenic block copolymer, by a process which comprises coating a surface with the latex to obtain a film, wherein the latex comprises a vulcanizing agent. The invention also provides a latex comprising such a styrenic block copolymer and a vulcanizing agent, as well as a styrenic block copolymer that is particularly suitable for use in such a latex.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: April 26, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Wouter De Jong
  • Publication number: 20160108154
    Abstract: This invention relates to an accelerator system comprising a sulphur donor, a carbamate or combination of carbamates as the only accelerator and optionally sulphur and optionally an activator, characterized in that the carbamate is a zinc dihydrocarbyldithiocarbamate, or a combination of zinc dihydrocarbyldithiocarbamates; a composition comprising a synthetic isoprene polymer latex and the accelerator system, and dipped goods made therefrom.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventor: Lambertus Leonardus Marie KRUTZER
  • Publication number: 20160108305
    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: Application
    Filed: October 20, 2014
    Publication date: April 21, 2016
    Applicant: Kraton Polymers U.S. LLC
    Inventors: Erin B. Murphy, Duc V. Nguyen, Robert C. Bening
  • Patent number: 9304231
    Abstract: The present invention is directed to a composition for a gel useful in fiber optic cable which has the normal consistency of a grease but which, if desired, will become a rubbery coherent gel upon heating; a method of making the heat-fusible gel, and a method of making a spliceable fiber optic cable, and a fiber optic cable. In the broadest sense, a heat-fusible oil gel composition for fiber optic cable is disclosed, comprising: from 50 to 80 wt. % of a grease-like gel based on a hydrocarbon oil containing from 2 to 10 wt. % of an S-EB or S-EP diblock polymer, or a mixture of these diblock copolymers, and from 20 to 50 wt. % of a grease-like gel based on a polar oil containing from 5 to 25 wt. % of an S-EB-S or S-EP-S triblock copolymer, or a mixture of these triblock copolymers.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: April 5, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Lydia Salazar
  • Publication number: 20160060437
    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: Application
    Filed: August 24, 2015
    Publication date: March 3, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Fumio NAITO, Yoshikatsu Nakazawa, Norio Masuko, Arwin van der Waal
  • Patent number: 9249335
    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: August 27, 2014
    Date of Patent: February 2, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Troy E. Wiegand, Kathryn Janelle Wright
  • Patent number: 9243163
    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: August 27, 2014
    Date of Patent: January 26, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Lydia Ann Salazar
  • Patent number: 9238770
    Abstract: The present invention relates to a synthetic cement that comprises a low viscosity monofunctional monomer, a dicyclopentadienyl moiety having a pendant free radical reactive species, 1,3-butyleneglycol dimethacrylate, unsaturated styrenic block copolymer, and a peroxide curing agent. Additionally it may include weighting agents depending on the circumstances of the well, as is well known to those skilled in the art. Other additional components such as oil based mud, suspending agents, Portland cement, acrylates and methacrylates, retardant curing additives, and clays may optionally be incorporated into the synthetic cement. The synthetic cement is activated by heat, for example, and can be crafted to set within a certain time frame, for example in 4 hours, so that it pumpable for as long as need be, and then be set to seal the well in the manner desired.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: January 19, 2016
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Erin Murphy
  • Publication number: 20160009907
    Abstract: In order to provide a rubber composition having high transparency and toughness, the present invention can provide a crosslinked rubber composition, being substantially free of silica, comprising a first olefin polymer having refractive index of between 1.500 to 1.525 at 23 degree C.; and a second olefin polymer which is different from the first olefin polymer, wherein the composition has haze of 20% or less on 2 mm thick sheet, measured according to JIS K7136, and wherein the composition has Type A Durometer hardness (0 sec) of 35 or more, measured according to JIS K6253.
    Type: Application
    Filed: January 27, 2014
    Publication date: January 14, 2016
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Fumio NAITO, Yoshikatsu Nakazawa
  • Publication number: 20150375199
    Abstract: A rotary enthalpy exchange wheel having a rotatable wheel with air passageways extending from a front side to a back side for passing air streams therethrough. The wheel has a rigid substrate which is coated or laminated with a desiccant composition having a sulfonated block copolymer. The sulfonated block copolymer has at least one end block A and at least one interior block B, wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate ester functional groups based on the number of monomer units.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Applicant: KRATON POLYMERS U.S. LLC
    Inventors: Kuitian Tan, Steven Huynh