Mixture Contains Two Or More Solid Block Or Block-type Copolymers Patents (Class 525/89)
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Patent number: 8236894Abstract: The present invention relates generally to monovinylarene-conjugated diene block copolymers adapted for shrinkable film applications. In one embodiment, a block copolymer is provided wherein an oriented 2 mil film of the block copolymer oriented at 100° C. or less exhibits less than 10% shrinkage at 70° C., and at least 70% shrinkage at 100° C.Type: GrantFiled: May 24, 2010Date of Patent: August 7, 2012Assignee: Chevron Phillips Chemical Company LPInventors: John M. Brown, Carleton E. Stouffer, John D. Wilkey
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Patent number: 8236417Abstract: A pressure-sensitive adhesive contains an acrylic triblock copolymer (I) at not less than 60% by mass based on the total mass of all solids contained in the pressure-sensitive adhesive, the acrylic triblock copolymer being represented by the formula A1-B-A2 wherein: A1 and A2 are each independently an alkyl methacrylate polymer block having Tg of not less than 100° C. and B is an acryl acrylate polymer block having Tg of not more than ?20° C.; the content of the polymer block B is 50 to 95% by mass; Mw is in the range of 50,000 to 300,000; and the molecular weight distribution is in the range of 1.0 to 1.5. Preferably, the acrylic triblock copolymer (I) is a combination of an acrylic triblock copolymer (Ia) having Mw of 50,000 to less than 100,000 and an acrylic triblock copolymer (Ib) having Mw of 100,000 to 300,000, in a mass ratio (Ia):(Ib) of 45:55 to 75:25.Type: GrantFiled: November 26, 2007Date of Patent: August 7, 2012Assignee: Kuraray Co., Ltd.Inventors: Yoshihiro Morishita, Kenichi Hamada, Tetsuya Kunimune, Kazushige Ishiura
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Patent number: 8227063Abstract: The ink-contacting thermoplastic elastomer composition for an ink jet printer of the present invention contains: a styrene-isoprene-styrene block copolymer (SIS) in which at least part of isoprene blocks are formed of 3,4-polyisoprene; a styrene-ethylene/butylene-styrene block copolymer (SEBS); a polyolefin; and a polybutene.Type: GrantFiled: April 19, 2010Date of Patent: July 24, 2012Assignee: Canon Kabushiki KaishaInventors: Kyosuke Nagaoka, Akihiko Shimomura, Toshihiko Ujita, Takashi Fukushima
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Patent number: 8211978Abstract: A moldability modifier capable of improving molding processability, and a polypropylene resin composition using the same suitable for automobile exterior parts are provided. The invention relates to a moldability modifier comprising propylene block copolymer (A) containing from 80 to 98 wt % of a propylene homopolymer portion (A1) and from 2 to 20 wt % of a propylene/ethylene random copolymer portion (A2), wherein the MFR of (A1) is 300 g/10 min or more, the ethylene content of (A2) is from 10 to 70 wt %, the [?] of (A2) is 6.5 dl/g or more, and the MFR as a whole is 40 g/10 min or more; and propylene block copolymer (B) containing from 20 to 79 wt % of a propylene polymer portion (B1) and from 21 to 80 wt % of a propylene/ethylene random copolymer portion (B2), wherein the MFR of (B1) is 20 g/10 min or more, the ethylene content of (B2) is from 20 to 70 wt %, the [?] of (B2) is from 2.5 to 9.0 dl/g, and the MFR as a whole is from 0.1 to 50 g/10 min; and a polypropylene resin composition using the same.Type: GrantFiled: March 23, 2007Date of Patent: July 3, 2012Assignee: Japan Polypropylene CorporationInventors: Yukihito Zanka, Yuji Ryosho, Ken Shimizu, Masashi Shimouse, Shigeo Mizukami
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Patent number: 8198368Abstract: Cleavable, disulfide-coupled block copolymers as can be used in the preparation of nanoporous thin films, micellar configurations and related structures.Type: GrantFiled: October 17, 2008Date of Patent: June 12, 2012Assignee: University of MassachusettsInventors: Sankaran Thayumanavan, Akamol Klaikherd, Suhrit Ghosh
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Patent number: 8193282Abstract: The present invention relates to a thermoplastic resin composition which excels in impact resistance, dimension stability and rigidity, and also excels in appearance, fluidity and paint film adhesion property, and further which is very useful as manufacturing materials for exterior parts of automobile.Type: GrantFiled: December 8, 2006Date of Patent: June 5, 2012Assignee: DSM IP Assets B.V.Inventors: Masami Suzuki, Morio Tsunoda, Hajime Ohyama, Makoto Nakamura, Kiyoji Takagi
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Publication number: 20120116018Abstract: Provided is a resin composition for ink jet, including at least a component (A) and a component (B), in which the component (A) includes a (b)-(a)-(b) type isobutylene-based triblock copolymer composed of an isobutylene-based polymer block (a) and a styrene-based polymer block (b), and the component (B) includes a cyclic-polyolefin-based polymer. The resin composition for ink jet has water-vapor barrier properties and gas barrier properties comparable to or more than those of crosslinked rubbers having high water-vapor barrier properties and high gas barrier properties, and can be molded by any of press-molding, injection molding, extrusion molding, and the like.Type: ApplicationFiled: October 21, 2011Publication date: May 10, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kyosuke Nagaoka, Akihiko Shimomura, Toshihiko Ujita, Takashi Fukushima, Takushi Matsushita, Hiroyuki Takenaka
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Patent number: 8158722Abstract: Composition comprising at least one copolymer A composed of at least one alkylated styrene, of acrylonitrile, and, if appropriate, of at least one further monomer, at least one block copolymer B which has at least one block forming a hard phase and composed of at least one vinylaromatic monomer and has at least one block forming a soft phase and composed of at least one vinylaromatic monomer and of at least one diene, and at least one further copolymer C, and, if appropriate, one polymer D, where the copolymer C is at least one triblock copolymer composed of a first block composed of at least one vinylaromatic monomer, of a second block composed of at least one diene, and of a third block composed of at least one methyl methacrylate monomer, or comprising at least 50% by weight of methyl methacrylate, and the polymer D is at least one styrene polymer selected from glass-clear and impact-resistant polystyrene.Type: GrantFiled: March 4, 2009Date of Patent: April 17, 2012Assignee: Styrolution GmbHInventors: Konrad Knoll, Koch Jürgen, Piyada Charoensirisomboon
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Publication number: 20120088423Abstract: The present invention provides a composition for a stretchable film, which achieves a high-level balance between a high elastic modulus and a small permanent elongation, which is excellent in adhesive force when laminated with a non-woven fabric or the like, and also has good formability.Type: ApplicationFiled: June 24, 2010Publication date: April 12, 2012Applicant: ZEON CORPORATIONInventors: Ryouji Oda, Sadaharu Hashimoto
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Patent number: 8147958Abstract: A flexible thermoplastic composition comprises a poly(arylene ether), a first block copolymer, a second block copolymer and a flame retardant wherein the second block copolymer comprises a controlled distribution copolymer block. The flexible thermoplastic composition is useful in the manufacture of coated wires.Type: GrantFiled: July 2, 2010Date of Patent: April 3, 2012Assignee: Sabic Innovative Plastics IP B.V.Inventors: Kazunari Kosaka, Xiucuo Li, Weiguang Yao
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Publication number: 20120077400Abstract: 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: ApplicationFiled: September 29, 2010Publication date: March 29, 2012Inventors: John Flood, Richard Blackwell, Martin Ehrlich, Todd Schroeder, Jerzy Gumulka
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Publication number: 20120061287Abstract: A block copolymer or graft copolymer with weight-average molar mass Mw of at least 100 000 g/mol, comprising a) at least one block S composed of from 95 to 100% by weight of vinylaromatic monomers and from 0 to 5% by weight of dienes, and b) at least one copolymer block (S/B)A composed of from 63 to 80% by weight of vinylaromatic monomers and from 20 to 37% by weight of dienes, with glass transition temperature TgA in the range from 5 to 30° C., where the proportion by weight of the entirety of all of the blocks S is in the range from 50 to 70% by weight, based on the block copolymer or graft copolymer, and also mixtures thereof, and their use.Type: ApplicationFiled: December 14, 2009Publication date: March 15, 2012Applicant: BASF SEInventors: Konrad Knoll, Jürgen Koch, Piyada Charoensirisomboon, Daniel Wagner, Geert Verlinden, Roland Weidisch
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Publication number: 20120060997Abstract: A machine direction oriented plastic film. The film includes at least one polypropylene homopolymer, polypropylene random copolymer or polypropylene block copolymer or mixture of two or more thereof and at least one modifier.Type: ApplicationFiled: March 15, 2010Publication date: March 15, 2012Applicant: UPM Raflatac OyInventors: Noel Mitchell, Tom Saxberg
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Patent number: 8129470Abstract: A pressure-sensitive adhesive comprising a blend of at least two components, one of which comprises a block copolymer having at least the unit P(A1)-P(B1)-P(A1) and the second of which comprises a block copolymer having at least the unit P(B2)-P(A2)-P(B2); the blend forming an at least two-phase system.Type: GrantFiled: March 4, 2002Date of Patent: March 6, 2012Assignee: tesa AGInventors: Thilo Dollase, Marc Husemann, Bernd Luhmann
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Patent number: 8129478Abstract: Biodegradable polymers formed from biodegradable polyester-based prepolymers, to which ring-structured anhydrides which have different hydrophobicities have been connected, and which are either coupled to form linear thermoplastic polyester anhydrides or cross-linked to form network-structured polyester anhydrides. It is possible to adjust widely the degradation rate and mechanism of the polymers and thus they can be used, for example, in the controlled dosing of pharmaceutical ingredients, for tissue technological applications, in surgery and in bioactive composites.Type: GrantFiled: January 26, 2007Date of Patent: March 6, 2012Assignee: JVS-Polymers OyInventors: Jukka Seppälä, Risto Hakala, Harri Korhonen
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Patent number: 8110632Abstract: A profile extruded article includes a composition that is formed by melt-kneading particular amounts of a poly(arylene ether), a polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer, a homopolystyrene, and a polysalicylate. The article is particularly useful in the fabrication of solar collectors for low cost solar energy systems.Type: GrantFiled: January 15, 2009Date of Patent: February 7, 2012Assignee: Sabic Innovative Plastics IP B.V.Inventors: Christian Lietzau, Vijay R. Mhetar, Abhijit Namjoshi, Geuch Zijlma
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Patent number: 8106123Abstract: Processes for enhancing blown film processability and the blown films formed thereby are described herein. One embodiment of the processes generally includes providing a first propylene based heterophasic copolymer having a first melt flow rate, modifying the first propylene based heterophasic copolymer to form a second heterophasic polymer having a second melt flow rate, wherein the second melt flow rate is greater than the first melt flow rate, contacting the first heterophasic polymer, the second heterophasic copolymer or a combination thereof with a plurality of additives, wherein the plurality of additives include a nucleator, polyethylene and mineral oil to form a modified heterophasic copolymer and blowing the modified heterophasic polymer into a film.Type: GrantFiled: December 17, 2007Date of Patent: January 31, 2012Assignee: Fina Technology, Inc.Inventors: Rodolfo Mier, Mark Miller
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Patent number: 8101674Abstract: A pharmaceutical/medical rubber compound contains the following components: (A) a composition obtainable by crosslinking (a) 100 parts by weight of an isobutylene polymer having terminal alkenyl groups with (d) a hydrosilyl-containing compound in the presence of (b) from 5 to 100 parts by weight of a polyolefin and (c) from 5 to 100 parts by weight of polybutene during melt kneading, and (B) an ultra-high molecular weight polyethylene powder. Compared with conventional thermoplastic elastomers, the pharmaceutical/medical rubber compound and its molded article are free from deformations and have sufficient permanent set resistance even under high temperature conditions, have excellent mechanical properties, low water absorption property, low reactivity and superb gas barrier properties, and can withstand high-temperature sterilization.Type: GrantFiled: June 9, 2008Date of Patent: January 24, 2012Assignee: Daikyo Seiko, Ltd.Inventors: Yasushi Kawauchi, Katsuhiko Kimura
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Publication number: 20110319549Abstract: Provided is an adhesive composition for labels, which can be easily applied at a relatively low temperature and has satisfactory die cutting properties so that the adhesive composition can contribute to an improvement of the productivity of labels, and which is capable of producing labels having excellent holding power and tackiness. There is disclosed an adhesive composition for labels comprising: a block copolymer A represented by the following general formula (A); a polymer C, which is a polymer having a glass transition temperature of ?30° C. or lower, or a block copolymer that has a polymer block having a glass transition temperature of ?30° C. or lower at an end of the polymer chain; and a tackifier resin D.Type: ApplicationFiled: March 29, 2010Publication date: December 29, 2011Inventors: Ryouji Oda, Sadaharu Hashimoto
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Publication number: 20110318987Abstract: Provided is a composition for a stretchable film, which achieves a high-level balance between a high elastic modulus and a small permanent set, and can be formed into a stretchable film with satisfactory formability. A composition for a stretchable film comprises a block copolymer composition containing a block copolymer A represented by the following general formula (A) and a block copolymer B represented by the following general formula (B), and a tackifier resin: Ar1a-Da-Ar2a ??(A) (Arb-Db)n-X ??(B), in the general formulas (A) and (B), Ar1a and Arb each represent an aromatic vinyl polymer block having a weight average molecular weight of 6,000 to 20,000; Ar2a represents an aromatic vinyl polymer block having a weight average molecular weight of 40,000 to 400,000; Da and Db each represent a conjugated diene polymer block having a vinyl bond content of 1 mol % to 20 mol %; X represents a single bond or a residue of a coupling agent; and n represents an integer of 2 or greater.Type: ApplicationFiled: March 29, 2010Publication date: December 29, 2011Inventors: Takeshi Ooishi, Takurou Sakurai
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Publication number: 20110308412Abstract: Disclosed is a block copolymer composition for flexographic printing plates, which is capable of providing a flexographic printing plate that has much more excellent wear resistance than conventional flexographic printing plates, while maintaining sufficient rubber elasticity. The block copolymer composition for flexographic printing plates comprises a block copolymer A and a block copolymer B, each of which is an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer having a specific structure, wherein a content of the aromatic vinyl monomer unit in the block copolymer A is 41% or more.Type: ApplicationFiled: February 24, 2010Publication date: December 22, 2011Inventors: Tetsuaki Matsubara, Ryouji Oda
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Patent number: 8063142Abstract: A process for forming a nanoparticle composition is provided. The process includes polymerizing conjugated diene monomer in a hydrocarbon solvent to form a first reaction mixture, and charging excess alkenylbenzense monomer and anionic catalyst to form mono-block and diblock polymers. Micelles of said mono-block and diblock polymers are formed, and at least one crosslinking agent is added to cross-link the micelles and form nanoparticles. The nanoparticles preferably have a poly(alkenylbenzene) core and an outer layer including monomer units selected from the group consisting of conjugated dienes, alkenylbenzenes, alkylenes, and mixtures thereof, and a size distribution of between about 1 and 1000 nm.Type: GrantFiled: March 2, 2004Date of Patent: November 22, 2011Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz
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Publication number: 20110281994Abstract: There is provided a thermoplastic elastomer composition having excellent flexibility, mechanical properties, scratch resistance, abrasion resistance, and low-temperature characteristics. A crosslinked thermoplastic elastomer composition comprising 5 to 70 parts by mass of (C) a hydrogenated product of a block copolymer having at least one conjugated diene monomer unit block and at least one vinyl aromatic monomer unit block, and 20 to 150 parts by mass of (D) an olefin-based resin, based on 100 parts by mass of the total of (A) an ethylene-?-olefin copolymer comprising an ethylene unit and an ?-olefin unit having 3 to 20 carbon atoms, and (B) a copolymer having at least one hydrogenated copolymer block mainly composed of a conjugated diene monomer unit and a vinyl aromatic monomer unit, wherein a mass ratio ((A)/(B)) of the (A) component and the (B) component is from 20/80 to 75/25.Type: ApplicationFiled: December 4, 2009Publication date: November 17, 2011Inventors: Yutaka Eguchi, Shinichi Shibayama, Yoshifumi Araki
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Patent number: 8058340Abstract: A propylene-based resin composition for a pipe member, and a pipe member and multi-layered pipe member formed using that the same, which is comprised of (a) 65 to 90 parts by mass of a propylene resin homopolymer, (b) 10 to 25 parts by mass of talc having an average particle size of 1 to 10 ?m and (c) 1 to 10 parts by mass of at least one kind of a rubber component selected from an ethylene-propylene-based rubber, an ethylene-butene-based rubber, a styrene-butadiene-based rubber and a styrene-isoprene-based rubber as main components, wherein the MFR of a melt-kneaded mixture obtained by melt kneading these components (a) to (c) is from 0.01 to 2.00 g/10 minutes.Type: GrantFiled: June 30, 2006Date of Patent: November 15, 2011Assignee: Asahi Organic Chemicals Industry Co., Ltd.Inventors: Hidehiro Kourogi, Sueyoshi Suetome
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Patent number: 8058346Abstract: The present invention relates to monovinylarene-conjugated diene copolymer compositions adapted for blendability with acrylate polymers. In some embodiments, such compositions are provided that are particularly resistant to blocking when stored in pellet form.Type: GrantFiled: July 19, 2010Date of Patent: November 15, 2011Assignee: Chevron Phillips Chemical Company LPInventors: John D. Wilkey, Carleton E. Stouffer, Steven D. Bridges
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Blends of low crystallinity, low molecular weight propylene copolymers and styrenic block copolymers
Patent number: 8052822Abstract: Styrenic block copolymers are blended with propylene copolymers to provide polymeric compositions with an improved balance between processability and elasticity. The compositions have improved processability by facilitating the ease with which a rubbery material, usually difficult to melt process, can be processed at high line speeds, which in turn improves the formation of the composition into films or other articles, assisted by a desired level of melt elasticity, i.e., a high elastic extension and recovery.Type: GrantFiled: February 15, 2008Date of Patent: November 8, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sudhin Datta, Mun Fu Tse, Abdelhadi Sahnoune, Charles L. Sims, James N. Coffey -
Publication number: 20110256332Abstract: A thermoplastic elastomer (TPE) is disclosed which is a combination of a non-elastomeric polyolefin and two different non-crosslinked elastomers and optional softening oil. The TPE can be used as an outer layer on at least a portion of the outer surface of a co-extruded, blow-molded polyolefin plastic article to provide a “soft touch” gripping surface on the article.Type: ApplicationFiled: April 11, 2011Publication date: October 20, 2011Applicant: POLYONE CORPORATIONInventors: Sehyun KIM, Joe KUTKA, Daniel PARIS, I, Albert DEBY
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Publication number: 20110257336Abstract: An object of the present invention is to provide a block copolymer composition containing an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer, which is capable of achieving a high-level balance between a high elastic modulus and a small permanent set, and is capable of producing a highly isotropic molded product having uniform mechanical properties even when a molding method which is likely to cause molecular orientation, such as extrusion molding, is applied.Type: ApplicationFiled: December 25, 2009Publication date: October 20, 2011Inventors: Ryouji Oda, Takeshi Ooishi
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Publication number: 20110257335Abstract: A block copolymer with weight-average molar mass Mw of at least 100 000 g/mol, comprising a) at least one block S composed of from 95 to 100% by weight of vinylaromatic monomers and from 0 to 5% by weight of dienes, and b) at least one copolymer block (S/B)A composed of from 63 to 80% by weight of vinylaromatic monomers and from 20 to 37% by weight of dienes, with glass transition temperature TgA in the range from 5 to 30° C., and c) at least one copolymer block (S/B)B composed of from 20 to 60% by weight of vinylaromatic monomers and from 40 to 80% by weight of dienes, with glass transition temperature TgB in the range from 0 to ?80° C., where the proportion by weight of the entirety of all of the blocks S is in the range from 50 to 70% by weight, and the proportion by weight of the entirety of all of the blocks (S/B)A and (S/B)B is in the range from 30 to 50% by weight, based in each case on the block copolymer A, and also mixtures thereof, and their use.Type: ApplicationFiled: December 14, 2009Publication date: October 20, 2011Applicant: BASF SEInventors: Konrad Knoll, Jürgen Koch, Piyada Charoensirisomboon, Daniel Wagner, Geert Verlinden, Roland Weidisch
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Publication number: 20110251347Abstract: A process for producing a styrene-butadiene diblock copolymer-containing blend that is not an agglomeration, that involves mixing a styrene-butadiene multiblock thermoplastic elastomer solution with a styrene-butadiene diblock copolymer solution. Blends comprising a styrene-butadiene diblock copolymer and a styrene-butadiene multiblock thermoplastic elastomer, which blends are not an agglomeration.Type: ApplicationFiled: August 5, 2009Publication date: October 13, 2011Inventors: Daniel F. Graves, Peter W. Boerner, John R. Schreffler, Christine M. Rademacher
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Patent number: 8034875Abstract: Compositions including a thermoplastic elastomer or thermoplastic vulcanizate derived from a styrenic block copolymer having a reactive or crosslinkable hard block including aromatic vinyl repeat units and also preferably a crosslinkable soft block, and a non-olefin thermoplastic polymer or copolymer and preferably a compatibilizer such as the reaction product of a non-olefin thermoplastic polymer and a functionalized polymer such as a maleic anhydride functionalized styrenic block copolymer that is compatible with the styrenic block copolymer having a reactive or crosslinkable hard block, and optionally a linking compound. The vulcanizates are prepared by crosslinking the styrenic block copolymer in the presence of the non-olefin thermoplastic polymer and a suitable crosslinking agent, and optionally the compatibilizer, preferably utilizing dynamic vulcanization.Type: GrantFiled: October 25, 2010Date of Patent: October 11, 2011Assignee: Teknor Apex CompanyInventors: Darnell C. Worley, II, Elliot ByungHwa Lee, Raman Patel, Jushik Yun
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Publication number: 20110245422Abstract: The present invention relates to thermoplastic polymers modified by means of acrylic block copolymers functionalized by hydrophilic monomers. The subject matter of the invention is a blend of polymers comprising, as matrix polymer, a thermoplastic material which comprises flexible segments of polyether or polyester type and comprising at least one acrylic block copolymer dispersed in said matrix polymer and miscible with the latter, said block copolymer comprising at least one hydrophilic monomer. The modified thermoplastic materials according to the invention maintain very good properties of transparency and, in addition, acquire new properties, in particular mechanical properties, such as a better mechanical strength in the molten state during conversion operations specific to thermoplastic materials, such as extrusion, blow molding or calendering operations.Type: ApplicationFiled: October 2, 2009Publication date: October 6, 2011Applicant: Arkema FranceInventors: Jean-Pierre Disson, Thomas Fine
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Patent number: 8008398Abstract: Foamable compositions which are usable for the manufacture of foamed, flexible, heat resistant, thermoplastic elastomeric articles, and which comprises at least: (a) 100 pbw of one or more selectively hydrogenated block copolymers, (b) 5 to 50 pbw per 100 pbw of component (a) of one or more different selectively hydrogenated block copolymers, (c) 42 to 80 pbw per 100 pbw of component (a) of a linear crystalline polymer comprising propylene as the major component, (d) from 100 to 250 pbw per 100 pbw of component (a) of a softener compatible with blocks B and B?, and (e) from 0.01 to 3 wt. %, relative to the weight of the primary components (a) to (e) of a solid chemical nucleating agent of the endothermic group in combination with a blowing agent.Type: GrantFiled: September 3, 2004Date of Patent: August 30, 2011Assignee: Kraton Polymers U.S. LLCInventors: Xavier Muyldermans, Emmanuelle Coignoul
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Publication number: 20110206751Abstract: The invention relates to a polymer vesicle with an asymmetrical unilamellar membrane, said membrane being constituted by two distinct layers, a layer (A) and a layer (B), said layers comprising respective amphiphilic block copolymers with layer (A) comprising, in contrast to said layer (B), an effective quantity of amphiphilic block copolymer comprising at least one stimulatable hydrophobic polymer block, said block polymers provided by said copolymers being capable of adopting a new steric configuration in response to an exogenous stimulus, conditioning the rupture of said unilamellar membrane. The invention also provides a method of producing said vesicle, a method of encapsulating an active ingredient in said vesicles, and a method of controlled release of the active ingredient.Type: ApplicationFiled: September 15, 2009Publication date: August 25, 2011Applicants: INSTITUT CURIE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE PIERRE ET MARIE CURIEInventors: Min-Hui Li, Elyes Mabrouk, Damien Cuvelier, Pierre Nassoy, Françoise Brochard-Wyart
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Publication number: 20110184082Abstract: The present invention provides for a composition that includes a hydrogenated styrenic block copolymer that has at least one block A and at least one block B, and about 10 to about 90 percent by weight of an styrene-isobutylene-styrene block copolymer. Each A is an monoalkenyl arene and each B block is a controlled distribution copolymer of at least one mono alkenyl arene and at least one conjugated diene, having the general formula A-EB/A-A and (A-EB/A)nX. Each B block comprises terminal regions adjacent to the A blocks that are rich in conjugated diene units and one or more regions not adjacent to the A blocks that are rich in mono alkenyl arene units. Oil-free compositions that result in the combination of low gaseous permeability, low thermal conductivity, strong vibration and sound attenuation, and optionally high levels of light transmission with relatively low haze values while maintaining melt flow rates suitable for easy processability are preferred.Type: ApplicationFiled: January 19, 2011Publication date: July 28, 2011Applicant: KRATON POLYMERS U.S. LLCInventors: Kathryn J. Wright, Sharman K. McGilbert
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Publication number: 20110180140Abstract: A composition of matter includes at least one carbon nanotube (CNT) or a graphene type structure having an outer surface, and a plurality of crystalline polymer supramolecular structures that include a conjugated polymer that are non-covalently secured to the outer surface of the CNTs or the graphene type structure. The conjugated polymer can be a conjugated homopolymer or a block copolymer including at least one conjugated block. The supramolecular structures extend outward from the outer surface of the CNTs or graphene type structures.Type: ApplicationFiled: January 27, 2011Publication date: July 28, 2011Applicant: University of Central Florida Research Foundation, Inc.Inventors: Lei Zhai, Jianhua Liu, Jianhua Zou, Anindarupa Chunder
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Patent number: 7985484Abstract: An object of the invention is to provide a block copolymer hydrogenation product suitable for a sheet and a heat shrinkable film which are excellent in solvent resistance, rigidity, elongation and transparency, which is excellent in a balance of physical properties such as solvent resistance, natural shrinkability, low-temperature shrinkability, rigidity, transparency and low-temperature elongation, and a composition thereof.Type: GrantFiled: April 7, 2006Date of Patent: July 26, 2011Assignee: Asahi Kasei Chemicals CorporationInventors: Susumu Hoshi, Yukio Yamaura
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Patent number: 7977428Abstract: To provide a block copolymer composition excellent in balance of transparency, impact resistance, etc. in the form of not only an excluded product and a blow molded product but also an injection molded product.Type: GrantFiled: March 19, 2004Date of Patent: July 12, 2011Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Hiroyuki Kurimura, Jun Watanabe, Takeshi Oda, Norihiro Shimizu
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Publication number: 20110152436Abstract: The present invention provides a mixture of conjugated diene-vinyl aromatic hydrocarbon copolymers and an adhesive having the same. The mixture of conjugated diene-vinyl aromatic hydrocarbon copolymers comprises 10 to 45 wt. % of a conjugated diene-vinyl aromatic hydrocarbon di-block copolymer, 10 to 45 wt. % of a conjugated diene-vinyl aromatic hydrocarbon tapered di-block copolymer and 10 to 80 wt. % of a conjugated diene-vinyl aromatic multi-block copolymer.Type: ApplicationFiled: April 28, 2010Publication date: June 23, 2011Applicant: TSRC CORPORATIONInventors: Kung-Hsi Chan, Tsung Hsin Chen, Tai Wen Chiu
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Publication number: 20110143112Abstract: Thermoplastic elastomer compositions having a desirable soft touch feel to skin, and in particular grip, especially during wet, soapy and humid conditions. In one embodiment, the composition is part of a composite system, wherein the composition is connected, for example molded, overmolded or co-extruded to a substrate, such as a thermoplastic, glass or metal. The compositions and composites are suitable for use wherever desirable feel and grip are needed, such as handles or grips of household or industrial items.Type: ApplicationFiled: December 15, 2009Publication date: June 16, 2011Applicant: Teknor Apex CompanyInventors: Kevin G. Cai, Darnell C. Worley, II, Gregory J. Anderson
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Patent number: 7960474Abstract: A single-component high-temperature-curing reactive composition based on natural and/or synthetic elastomers having olefinic double bonds and on vulcanizing agents is provided. Such compositions contain at least one liquid polyene with a molecular weight between 400 and 80,000, preferably between 800 and 25,000; at least one block copolymer with at least one polyene block and at least one saturated block; and a vulcanizing system of sulfur and accelerators and/or quinone oximes, if applicable. Such high-temperature-curing reactive compositions are useful as single-component adhesives, sealant or coating compositions or sealing compounds in automobile body manufacture.Type: GrantFiled: August 19, 2008Date of Patent: June 14, 2011Assignee: Henkel AG & Co. KGaAInventors: Klaus Rappmann, Rainer Kohlstrung
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Publication number: 20110129627Abstract: Polymer composition comprising—a heterophasic propylene copolymer comprising a polypropylene matrix and an elastomeric propylene copolymer comprising at least one comonomer selected from the group consisting of ethylene and C4 to C20 ?-olefin, and—a styrenic based elastomer(s) (B), wherein the styrene content in each styrenic based elastomer (B) is equal or below 15 wt.-%, and the total amount of the styrenic based elastomer(s) (B) based on the total amount of polymers present in the polymer composition is of 16.0 to 46.0 wt.-%.Type: ApplicationFiled: July 27, 2009Publication date: June 2, 2011Applicant: Borealis AGInventors: Tonja Schedenig, Christelle Grein, Dietrich Gloger
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Patent number: 7939601Abstract: The present invention relates to a polymeric material comprising units capable of having a cationic charge at a pH of from about 4 to about 12; provided that said polymeric material has an average cationic charge density from about 2.75 or less units per 100 daltons molecular weight at a pH of from about 4 to about 12. The polymeric material is a suds enhancer and a suds volume extender for hand dishwashing compositions and personal care products such as soaps, shaving cream foam, foaming shaving gel, foam dephiliatories and shampoos. The polymers are also effective as a soil release agent in fabric cleaning compositions. The polymers are also useful in agrochemical foam, fire-fighting foam, hard surface cleaner foam, and coagulant for titanium dioxide in paper making.Type: GrantFiled: October 30, 2000Date of Patent: May 10, 2011Assignee: Rhodia Inc.Inventors: Vance Bergeron, Dominic Wai-Kwing Yeung, Jean-Francois Bodet, Mark Robert Sivik, Bernard William Kluesener, William Michael Scheper
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Publication number: 20110097559Abstract: A polymeric composition and method of preparation for application in sub-micron lithography, comprising a blend of A-B and B?-C block, random, branched, or graft copolymers, where: (i) the B and B? blocks or grafts have attractive supramolecular interactions characterized by a negative Flory-Huggins parameter; (ii) the composition exhibits a microphase-separated, three-domain morphology with A, C, and B/B? domains comprised largely of A blocks or grafts, C blocks or grafts, and a mixture of B and B? blocks or grafts, respectively. Long-range ordering of nanometer-scale domain features has been achieved in thin films of such supramolecular polymer blends, while avoiding macrophase separation. The strategy offers a diversity of morphologies for sub-micron lithographic applications in tandem with ease of chemical synthesis.Type: ApplicationFiled: May 7, 2009Publication date: April 28, 2011Inventors: Craig J. Hawker, Chuanbing Tang, Edward J. Kramer, Glenn Fredrickson
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Publication number: 20110082258Abstract: Embodiments of the invention provide block composites and their use in thermoplastic vulcanizate compounds.Type: ApplicationFiled: October 1, 2010Publication date: April 7, 2011Applicant: Dow Global Technologies Inc.Inventors: Kim L. Walton, Brian W. Walther, Robert T. Johnston, Jose M. Rego, Xiaosong Wu
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Publication number: 20110082225Abstract: A blend of thermoplastic polyester elastomer, hydrogenated styrenic block copolymer, and high styrene content styrenic block copolymer is disclosed which has good processability and more effective abrasion resistance than the blend using polystyrene in place of the high styrene content styrenic block copolymer.Type: ApplicationFiled: June 16, 2009Publication date: April 7, 2011Applicant: POLYONE CORPORATIONInventors: Guoqiang Qian, Krishna Venkataswamy
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Publication number: 20110077357Abstract: An object of the present invention is to provide a polymer composition for an inner liner, that is excellent in air permeation resistance and adhesion with an adjacent rubber, and a pneumatic tire using the same. In the polymer composition for an inner liner, a polymer component contains 99 to 50% by mass of a styrene-isobutylene-styrene triblock copolymer, and at least one of a styrene-isoprene-styrene triblock copolymer and a styrene-isobutylene diblock copolymer in a total amount of 1 to 50% by mass.Type: ApplicationFiled: September 8, 2010Publication date: March 31, 2011Inventor: Mutsuki SUGIMOTO
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Patent number: 7906583Abstract: Improved adhesives are provided through the use of styrenic radial block copolymers, containing at least 40 wt % diblock copolymers, the adhesives have improved adhesive properties and a reduced elastic behavior under die-cutting conditions. Compared to conventional linear block copolymers of similar molecular weight, radial copolymers offer higher holding power and lower melt viscosity for the adhesive. They therefore contribute to an improved balance between processability and end-use properties.Type: GrantFiled: October 31, 2007Date of Patent: March 15, 2011Assignees: The Dow Chemical Company, Exxon Mobil Chemical Patents Inc.Inventors: Jacques Bernard Lechat, Michael Oliver Myers, Marie-Noelle Cazenave, Christophe Derail, Nicolas Kappes, Jurgen Schroeyers
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Publication number: 20110060103Abstract: Embodiments of the invention provide a class of mesophase separated butene/?-olefin block interpolymers with controlled block sequences. The butene/?-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block butene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the butene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.Type: ApplicationFiled: January 30, 2009Publication date: March 10, 2011Applicant: Dow Global Technologies Inc.Inventors: Gary R. Marchand, Yunwa W. Cheung, Benjamin C. Poon, Jeffrey D. Weinhold, Kim L. Walton, Pankaj Gupta, Colin Lipishan, Phillip D. Hustad, Roger L. Kuhlman, Edmund M. Carnahan, Eddy I. Garcia-Meitin, Patricia L. Roberts
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Patent number: 7902295Abstract: The inventive composition includes a block copolymer which includes four blocks and has the following block arrangement: B-S-B-S. The two polymer blocks B comprise conjugated diene monomer constitutional units; and the two polymer blocks S comprise vinyl aromatic hydrocarbon monomer constitutional units. The invention also includes methods of making such inventive compositions as well as asphalt compositions and/or thermoplastic elastomers which include such block copolymer.Type: GrantFiled: August 3, 2005Date of Patent: March 8, 2011Inventors: Peter W. Boerner, Daniel Graves, James E. Hall, Brent Iceman