Stretched Product Patents (Class 526/348.1)
  • Patent number: 10494748
    Abstract: A non-woven fabric that absorbs only a small amount of volatile low molecular weight compound, and that has good texture when used as a non-woven fabric that makes contact with human skin. This thermal bond non-woven fabric containing cyclic olefin resin includes at least: fibers (A) containing at least 50 mass % of a cyclic olefin resin (A1) having a glass transition temperature TgA1° C.; and fibers (B) containing at least 10 mass % of either a cyclic olefin resin (B1) having a glass transition temperature TgB1° C., or a crystalline thermoplastic resin (B2) having a melting point MpB2° C.; the fibers (A) and the fibers (B) being heat-spliced together; wherein TgA1>TgB1 or TgA1>MpB2, and either the difference between the glass transition temperature TgA1° C. and the glass transition temperature TgB1° C. or the difference between the glass transition temperature TgA1° C. and the melting point MpB2° C. exceeds 20° C.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: December 3, 2019
    Assignee: Polyplastics Co., Ltd.
    Inventor: Hidetoshi Okawa
  • Patent number: 10435551
    Abstract: Injection molded article comprising at least 60 wt.-% of a heterophasic propylene copolymer, said polymer comprises a matrix being a polypropylene, said polypropylene comprises at least three polypropylene fractions, the three polypropylene fractions differ from each other by the melt flow rate and at least one of the three polypropylene fractions has a melt flow rate in the range of 1.0 to 20.0 g/10 min, and an elastomeric propylene copolymer dispersed in said matrix, wherein said heterophasic propylene copolymer has a melt flow rate of equal or more than 20.0 g/10 min and the amorphous phase of the xylene cold soluble fraction of the heterophasic propylene copolymer has an intrinsic viscosity of equal or higher than 2.0 dl/g.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: October 8, 2019
    Assignee: Borealis AG
    Inventors: Cornelia Tranninger, Stefan Schiesser, Balakantha rao Kona, Andreas Hauer
  • Patent number: 10287408
    Abstract: Provided is a resin film having excellent size stability in a high-temperature environment. A resin film formed of a resin containing an alicyclic structure-containing polymer having crystallizability, wherein an absolute value of a thermal size change ratio when the film is heated at 150° C. for 1 hour is 1% or less in any in-plane direction of the film. The alicyclic structure-containing polymer may preferably be a hydrogenated product of a ring-opened polymer of dicyclopentadiene. Also provided is a method for producing the resin film including a step of relaxing strain of the crystallized film while the crystallized. film is kept flat.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: May 14, 2019
    Assignee: ZEON CORPORATION
    Inventors: Toshihide Murakami, Satoshi Yamada, Yasunori Ii
  • Patent number: 10280242
    Abstract: The present application relates to a propylene ethylene random copolymer exhibiting two melting temperatures (Tm) which differ from each other.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: May 7, 2019
    Inventors: Joko Priatmoko, Vassilios Galiatsatos
  • Patent number: 10087268
    Abstract: Disclosed are methods for polymerizing olefin monomers comprising contacting one or more olefin monomers with a cosupported catalyst system and an activator. Also disclosed are polymers produced using the catalyst systems and methods disclosed herein. The polymers have a multimodal molecular weight distribution and may be produced in a single reactor.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: October 2, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Glen E. Alliger, Laughlin G. McCullough
  • Patent number: 9963525
    Abstract: [Problem] To provide an ethylene-?-olefin copolymer having high mechanical strength and good molding properties. [Solution] Provided is an ethylene-?-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 8, 2018
    Assignee: JAPAN POLYETHYLENE CORPORATION
    Inventors: Yoshiyuki Ishihama, Ryotaro Harada, Masaru Aoki, Kenji Iiba, Kazushi Kodama, Hiroto Hayashi
  • Patent number: 9752021
    Abstract: The instant invention provides an ethylene/alpha-olefin interpolymer composition suitable for blown film applications, and blown films made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for blown film applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.910 to 0.918 g/cm3, a melt index I2 in the range of from 0.5 to 1.1 g/10 minutes, a melt flow ratio I10/I2 in the range of from 8 to 10, a melt strength in the range of from 3 to 6 cN, a highest temperature fraction in the range of from 11 to 14 percent determined by CEF, a highest peak temperature fraction by CEF in range of from 96 to 100° C.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 5, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Mehmet Demirors, Teresa P. Karjala, Julie W. Mckenna, Douglas S. Ginger
  • Patent number: 9403928
    Abstract: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising ethylene and optionally a chain transfer agent system (CTA system) into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that the second reactor zone contains a CTA system having a transfer activity Z2; and with the proviso that the ratio of Z1/Z2 is less than 1.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: August 2, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Otto J. Berbee, Cornelis Den Doelder, Egbert Nijhof, Mehmet Demirors, Sjoerd A. De Vries
  • Patent number: 9316465
    Abstract: The invention relates to a method for producing a highly oriented, high molecular weight polymer tape. The method comprises forming and compression-molding a polymer powder bed at a temperature below the melting point of the polymer to form a sheet; at a temperature below the melting point of the polymer, rolling and stretching the sheet in a calendar unit to form a partially oriented polymer web; at a temperature below the melting point of the polymer, drawing the partially oriented polymer web in a drawing unit; and, optionally repeating step c) to form a more fully oriented non-fibrous high molecular weight polymer tape, the method being discontinuous in that the ingoing line speed of one of the method steps b) to d) differs from the outgoing line speed of the preceding method step.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: April 19, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventor: Reinard Jozef Maria Steeman
  • Patent number: 9216538
    Abstract: Methods of enhancing one or more physical properties of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction and/or transverse direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' machine-direction tear resistance. The methods can involve cold stretching the films and imparting rib patterns into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a machine-direction tear resistance that is approximately equal to or greater than the machine-direction tear resistance of the film prior to stretching.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: December 22, 2015
    Assignee: The Glad Products Company
    Inventor: Michael G. Borchardt
  • Patent number: 9206312
    Abstract: A heat-shrinkable film having a layer made of a mixed resin containing a polylactic acid resin and a polyolefin resin as the main components, wherein the mass ratio of the polylactic acid resin and the polyolefin resin is 95/5 to 50/50, the polylactic acid resin is a copolymer of D-lactic acid and L-lactic acid or a mixed resin of the copolymer, the D/L ratio of D-lactic acid and L-lactic acid is 3/97 to 15/85 or 85/15 to 97/3, the storage elastic modulus of the polyolefin resin or the soft acrylic resin at 20° C. is ?100 MPa as measured at an oscillation frequency of 10 Hz and a strain of 0.1%, the film is stretched in at least one direction, and the heat shrinkage ratio of the film in the main shrinking direction is ?20% as measured after the film is immersed in 80° C. water for 10 seconds.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: December 8, 2015
    Assignee: MITSUBISHI PLASTICS, INC.
    Inventors: Takashi Hiruma, Takeyoshi Yamada
  • Patent number: 9057148
    Abstract: A method for producing a polypropylene fiber, which can produce a high strength polypropylene fiber without using a special raw material and/or means is provided. The method for producing a polypropylene fiber includes the step of spinning a melt extruded fiber, the step of keeping cold, and the step of drawing, in which a ratio of a take-off speed with respect to an extrusion speed in the step of spinning the melt-extruded fiber is 50 to 750.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: June 16, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Tatsuya Kitagawa, Tadahisa Iwata, Chizuru Hongo
  • Publication number: 20150038663
    Abstract: The invention relates to a multistage drawing process for the drawing of polymeric elongated objects, containing a first drawing stage and a final drawing stage and optionally containing at least one intermediate drawing stage subsequent to the first drawing stage and prior to the final drawing stage, comprising in the following order the steps of: a. providing a polymeric elongated feed object; b. drawing the elongated object in the first drawing stage with a draw ratio of between 30% and 90% of the maximum drawing ratio achievable in the first drawing step; c. optionally drawing the elongated object in the at least one intermediate drawing stage with a draw ratio of between 30% and 90% of the maximum drawing ratio achievable in the at least one intermediate drawing step; d. drawing the elongated object in the final drawing stage with a draw ratio of at most 5, preferably of at most 3.
    Type: Application
    Filed: February 17, 2012
    Publication date: February 5, 2015
    Applicant: DSM IP ASSETS B.V.
    Inventors: Reinard Jezef Maria Steeman, Joseph Arnold Paul Maria Simmelink
  • Patent number: 8901260
    Abstract: An interpolymer of ethylene and at least one alpha-olefin is claimed, wherein the ethylene interpolymer is characterized as having an average Mv and a valley temperature between the interpolymer and high crystalline fraction, Thc, such that the average Mv for a fraction above Thc from ATREF divided by average Mv of the whole polymer from ATREF (Mhc/Mp) is less then about 1.95 and wherein the interpolymer has a CDBI of less than 60%. The interpolymer of ethylene and at least one alpha-olefin can also be characterized as having a high density (HD) fraction and an overall density such that % HD fraction<?2733.3+2988.7x+144111.5 (x?0.92325)2 where x is the density in grams/cubic centimeter. Fabricated articles comprising the novel interpolymers are also disclosed.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: December 2, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Ayush A. Bafna, Mehmet Demirors, Sylvie Desjardins, Douglas S. Ginger, Colleen M. Tice, Terry A. Pearce
  • Patent number: 8883947
    Abstract: A vinylidene fluoride homopolymer represented by the formula (4): CF3-(A1)-I??(4) wherein A1 represents a structural unit of vinylidene fluoride homopolymer which includes crystal form I alone or as main component and has a number average degree of polymerization of 5 to 12.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: November 11, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Tetsuhiro Kodani
  • Patent number: 8852748
    Abstract: A polymeric resin having a density of greater than about 0.960 g/cc, a melt index of from about 1.3 g/10 min. to about 2.8 g/10 min., a zero shear viscosity of from about 1×104 Pa*s to about 1×105 Pa*s, a recoverable shear parameter of from about 220 to about 370, and a CY-a parameter of from about 0.155 to about 0.200. A polymeric resin having an initial tension defined by the equation IT??1.67*(MI)+b where b is 5.17 and a percent decrease in the extrusion pressure of the resin of about 30% when compared to polymer resin of similar melt index prepared with a catalyst that has not undergone an activation comprising an oxidation, reduction, oxidation sequence wherein the resin when formed into a film has a moisture vapor transmission rate of from about 0.21 g.mil/100 in2/day to about 0.33 g.mil/100 in2/day.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: October 7, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Ashish M. Sukhadia, Max P. McDaniel, Ted Cymbaluk, Rajendra K. Krishnaswamy, Lawrence Szmutko
  • Patent number: 8802802
    Abstract: Disclosed is a method for producing polyethylene films which have high resistance to deformation or elongation under loading in tension. The method comprises orienting in the machine direction (MD) a high density polyethylene film at a drawdown ratio effective to give the film an MD tensile strength at yield greater than or equal to 50,000 psi, wherein the HDPE has a density greater than 0.940 g/cm3.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: August 12, 2014
    Assignee: Equistar Chemicals, LP
    Inventor: D. Ryan Breese
  • Publication number: 20140194587
    Abstract: A polymeric sheet having low density and comprising a low to non-existent amount of cyclic olefinic polymers (COP) and/or cyclic olefinic copolymers (COC). The overall density of the sheet may be lower than water. The sheet may be stretched and then heat shrinked onto an article. The sheet may be used as a label or package to wrap articles therewith.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: Polysack Plastic Industries Ltd.
    Inventors: Maor Segal, Yoav Guthman, Aharon Ben-Soussane, Yiftach Nir
  • Patent number: 8728616
    Abstract: A polymer sheet according to at least one embodiment of the present invention is a polymer sheet whose main component is oriented nanocrystals of a polymer, and which satisfies the following conditions (I), (II), and (III): (I) having a crystallinity of not less than 70%; (II) having a tensile strength at break of not less than 100 MPa and a tensile modulus of not less than 3 GPa; and (III) having an average thickness of not less than 0.15 mm. According to at least one embodiment of the present invention, it is possible to provide a polymer sheet excelling in properties such as mechanical strength, heat tolerance, and transparency, particularly a polymer sheet having excellent properties such as mechanical strength, heat tolerance, and transparency in general-purpose plastics such as polypropylene.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: May 20, 2014
    Assignees: Hiroshima University, Sunallomer Ltd.
    Inventors: Masamichi Hikosaka, Kiyoka Okada, Kaori Watanabe, Junichiro Washiyama, Hideharu Kimura, Koji Yamada, Takeshi Nakajima, Akihiro Otsubo
  • Patent number: 8697207
    Abstract: The inventive heat-shrinkable polyolefin film is high in shrinkability in the longitudinal direction that is its main shrinkage direction and excellent in finish properties after shrinkage, perforated line openability, and thermal blocking resistance. The heat-shrinkable polyolefin film is characterized by particular values with respect to hot-water heat shrinkage ratio in the longitudinal and width directions, right angle tear strength in the width direction, and heat-resistant peel strength.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: April 15, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Shigetomo Yamamoto, Yukinobu Mukoyama, Kyoko Inagaki, Kenji Kawai, Masatoshi Hashimoto, Katsuhiko Nose
  • Patent number: 8623982
    Abstract: Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: January 7, 2014
    Assignee: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Wyman Stephens, John Ashbaugh, Fengkui Li
  • Patent number: 8618232
    Abstract: There are provided an infrared absorbing thin film that efficiently absorbs infrared rays and has good versatility by controlling the absorption intensity of titanium oxide in an infrared region and a method for producing the infrared absorbing thin film. The infrared absorbing thin film containing a rutile-type titanium oxide crystal.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: December 31, 2013
    Assignees: DIC Corporation, Kawamura Institute of Chemical Research
    Inventors: Ren-Hua Jin, Pei-Xin Zhu
  • Publication number: 20130284006
    Abstract: The invention relates to a process for compacting a polymeric powder in a press, wherein the polymeric powder is supported during compaction by a powder carrier, characterized in that said powder carrier comprises a layer of thickness (T), said layer comprising a material with a static coefficient of friction (COF), and wherein T?COF is at least 10 ?m. The invention also relates to a compacted polymeric powder obtainable with the above process.
    Type: Application
    Filed: September 29, 2011
    Publication date: October 31, 2013
    Applicant: DSM IP ASSETS B.V.
    Inventors: Martin Antonius Van Es, Niels Hubertus Maria Eussen, Ronny Jacob Jensz
  • Patent number: 8545980
    Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: October 1, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Takeharu Tajima, Toshitaka Kanai, Tomoaki Takebe, Yutaka Minami
  • Patent number: 8507628
    Abstract: Injection stretch blow molded (ISBM) articles and methods of forming the same are provided herein. In one embodiment, the ISBM articles generally include a propylene based random copolymer having a molecular weight distribution of from about 9 to about 20. In another embodiment, the ISBM articles generally include a propylene based random copolymer formed from a Ziegler-Natta catalyst including a succinate internal donor.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 13, 2013
    Assignee: Fina Technology, Inc.
    Inventors: Michael Musgrave, Dang Le, Luyi Sun, David Smith
  • Publication number: 20130189465
    Abstract: Injection stretch blow molded (ISBM) articles and methods of forming the same are described herein. The ISBM articles generally include a propylene-based impact copolymer.
    Type: Application
    Filed: March 11, 2013
    Publication date: July 25, 2013
    Applicant: FINA TECHNOLOGY, Inc
    Inventor: Luyi Sun
  • Publication number: 20130184403
    Abstract: A reflector reflects incident light and comprises crystalline plastic in which a crystal region and an amorphous region are mixed, wherein the amorphous region includes a plurality of orientation layers comprising amorphous particles that are oriented in a predetermined direction. The reflector, which has high reflectance, is formed by extending a crystalline plastic material exhibiting a superior extensibility to extend the amorphous particles in the amorphous region in the predetermined direction so as to form a plurality of extension layers in the amorphous region. Since a reflector having a superior performance with a very improved reflectance can be provided due to a high diffuse reflectance by the extension layers in the amorphous region without a foaming process or an additional additive to increase the reflectance, the manufacturing process of the reflector is simplified and the manufacturing cost is reduced so that productivity can be greatly improved.
    Type: Application
    Filed: July 26, 2012
    Publication date: July 18, 2013
    Applicant: ALPHAVISION CO., LTD.
    Inventor: Jae-Dong Yoon
  • Patent number: 8475899
    Abstract: The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: July 2, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger, Jerry T. Lanier, Jeff S. Fodor, Paul J. Deslauriers, Chung C. Tso, David C. Rohlfing
  • Patent number: 8450439
    Abstract: There is provided a method of forming a thin film of vinylidene fluoride homopolymer having crystal form I which is applicable to various substrates in relatively easy way (coating conditions, application method, etc.), a process for preparing a vinylidene fluoride homopolymer having crystal form I efficiently at high purity, and novel vinylidene fluoride homopolymers which can give a thin film being excellent in ferroelectricity. The method of forming a thin film of vinylidene fluoride homopolymer comprises (i) a step for preparing a green powder product of vinylidene fluoride homopolymer comprising crystal form I alone or as main component by subjecting vinylidene fluoride to radical polymerization in the presence of a bromine compound or iodine compound having 1 to 20 carbon atoms which contains at least one moiety represented by —CRf1Rf2X1, wherein X1. is iodine atom or bromine atom; Rf1. and Rf2.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: May 28, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Tetsuhiro Kodani
  • Publication number: 20130129997
    Abstract: An oriented monolayer or multilayer film, wherein the monolayer film comprises a copolymer (A1) of propylene with hexene-1 containing from 4 to 10% by weight of hexene-1 and having MFR from 0.5 to 10 g/10 min., and the multilayer film comprises at least 30% by weight of said copolymer (A1), both the monolayer and the multilayer film being obtainable with a process comprising a drawing step wherein the film is drawn with a draw ratio of at least 3, in at least one direction.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 23, 2013
    Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
    Inventors: Michele Grazzi, Paolo Bassi, Andrea Felisati, Giampaolo Pellegatti
  • Patent number: 8427810
    Abstract: The present invention relates to a capacitor film comprising a biaxially oriented polypropylene wherein a) said polypropylene has a draw ratio in machine direction of at least 4.0 and a draw ratio in transverse direction of at least 4.0, and b) said polypropylene has an electrical breakdown strength EB63% according to IEC 60243-part 1 (1988) of at least 300 kV/mm at a draw ratio in machine direction and in transverse direction of 4.0.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: April 23, 2013
    Assignee: Borealis Technology Oy
    Inventors: Manfred Stadlbauer, Eberhard Ernst, Lauri Huhtanen, Yvo Daniels, Franck Jacobs
  • Patent number: 8420743
    Abstract: A propylene-based copolymer is composed of 60 to 90% by weight of Component (A) that is a polymer component whose major structural unit is a structural unit derived from propylene and 10 to 40% by weight of Component (B) that is a propylene-ethylene copolymer component whose content of a structural unit derived from ethylene is 50 to 80% by weight, wherein the sum total of Component (A) and Component (B) is 100% by weight, wherein the ratio of the intrinsic viscosity of Component (B) ([?]B) to the intrinsic viscosity of Component (A) ([?]A)([?]B/[?]A) satisfies a formula: 1.3<[?]B/[?]A?2.0, and the melt flow rate, measured at a temperature of 230° C. and a load of 21.18 N, of the copolymer is not less than 5 g/10 minutes and not more than 30 g/10 minutes.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 16, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kenji Ikeda, Shigeki Kishiro
  • Patent number: 8399581
    Abstract: Metallocene catalyzed polyethylenes are found to have improved physical properties, improved processability and improved balance of properties. Surprisingly, there is a direct relationship between MD shrinkage, and MD tear. Additionally, MD tear is greater than TD tear, and MD tear is also greater than intrinsic tear. MD tear to TD tear ratios are above 0.9, and dart drop impact is above 500 g/mil. The polyethylenes have a relatively broad composition distribution and relatively broad molecular weight distribution.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: March 19, 2013
    Assignee: Univation Technologies, LLC
    Inventors: James McLeod Farley, John F. Szul, Matthew Gary McKee
  • Publication number: 20130064995
    Abstract: A polymer filament or fiber comprising a polyethylene material (I) having the following features: a) a density of 0.900 g/cm3 or higher; b) a MI21 value of 25 g/10 min.; c) a MFR value from 25 to 60; the said fiber being stretched by drawing with a draw ratio from 1.5 to 10.
    Type: Application
    Filed: April 21, 2011
    Publication date: March 14, 2013
    Applicant: BASELL POLYOLEFINE GMBH
    Inventors: Gianni Perdomi, Fabiana Fantinel, Roberto Vanzini, Shahram Mihan, Roberto De Palo
  • Patent number: 8316904
    Abstract: This disclosure relates to a vulcanizable layered composition comprising at least two layers and at least one tie layer. The first of the two layers comprises a fluid permeation prevention layer and the second comprises at least one high diene rubber. The tie layer comprises, a mixture, in parts by weight relative to 100 weight parts of rubber, of suitable amounts of: (1) epoxidized natural rubber; (2) at least one high diene elastomer; (3) at least one filler; (4) least one tackifier; and (5) a rubber curing system. The fluid permeation prevention layer preferably comprises suitable amounts of: (A) at least one thermoplastic engineering resin component, preferably one or more nylon resins; and (B) at least one elastomer component, preferably a brominated isobutylene p-methylstyrene copolymer/and where the total amount of (A) and (B) is not less than 30% by weight, and wherein (B) is dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of component (A).
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: November 27, 2012
    Assignees: The Yokohama Rubber Co., Ltd., ExxonMobil Chemical Patents, Inc.
    Inventors: Yoshihiro Soeda, Yoshiaki Kirino, Tomoyuki Sakai, Andy Haishung Tsou
  • Patent number: 8299193
    Abstract: The present invention provides a film including, in at least a part thereof, a layer comprising an ethylene-based resin, which is a copolymer of ethylene and an ?-olefin of 4 to 10 carbon atoms, and satisfies the following requirements (1) to (5) at the same time or an ethylene-based resin composition containing the resin; (I) the melt flow rate at 190° C. under a load of 2.16 kg is in the range of 0.1 to 50 g/10 min, (II) the density is in the range of 875 to 970 kg/m3, (III) the ratio of a melt tension at 190° C. to a shear viscosity at 200° C. and an angular velocity of 1.0 rad/sec is in the range of 1.00×10?4 to 9.00×10?4, (IV) the sum of the number of methyl branches and the number of ethyl branches, each number being based on 1000 carbon atoms and measured by 13C-NMR, is not more than 1.8, and (V) the zero shear viscosity [?0(P)] at 200° C. and the weight-average molecular weight (Mw) as measured by a GPC-viscosity detector method (GPC-VISCO) satisfy the following relational formula (Eq-1): 0.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: October 30, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masao Suzuki, Yasuo Satoh, Takahiro Akashi, Tsutomu Tasaki, Shinya Matsubara, Hideki Bando
  • Patent number: 8288495
    Abstract: [Object] To provide a propylene homopolymer suitable for capacitor films having high withstand voltage and a stretched film formed by stretching the propylene homopolymer. [Solution] A propylene homopolymer of the present invention for capacitors satisfies the following requirements (i) to (v) and (ix): (i) the MFR is 1 to 10 g/10 minutes; (ii) the meso pentad fraction (mmmm) measured by 13C-NMR is 0.940 to 0.995; (iii) the integrted amount of elution at 90° C. by CFC using o-dichlorobenzene is 0.5% by weight or less; (iv) the melting point measured using DSC is 152° C. or more; (v) the chlorine content is 2 ppm by weight or less; and (ix) in an elution temperature-elution volume curve measured by cross-fractionation chromatography (CFC) using o-dichlorobenzene, the maximum peak has a peak top temperature in the range of 105° C. to 130° C. and half width of 7.0° C. or less.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: October 16, 2012
    Assignees: Mitsui Chemicals, Inc., Prime Polymer Co., Ltd.
    Inventors: Satoshi Tamura, Keita Itakura, Satoshi Hashizume
  • Patent number: 8283426
    Abstract: The present invention relates to a process for the production of fibers and filaments with polypropylene having a broad polydispersity index. The present invention also relates to high elongation nonwoven prepared from such fibers and filaments. It further relates to films and laminates prepared from high elongation nonwoven.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: October 9, 2012
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Hugues Haubruge, Guillaume Pavy, Alain Standaert
  • Patent number: 8273839
    Abstract: Antiballistic or composite products include high strength polyethylene films or tapes produced in a process including the steps of providing a quantity of disentangled polyethylene, applying a pressure of at least 20 bar to the quantity of disentangled polyethylene and a temperature between the ?-relaxation temperature and the melting temperature of the disentangled polyethylene Tm PE resulting in a block of disentangled polyethylene, skiving a film or tape off the block of disentangled polyethylene and drawing the film or tape in a single or multi stage drawing step at a total draw ratio of at least 1:20.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: September 25, 2012
    Assignee: Novameer B.V.
    Inventors: Jan Adolph Dam Backer, Bart Clemens Kranz, Benjamin Slager
  • Patent number: 8242220
    Abstract: Copolymer of ethylene and an alpha-olefin having (a) a density in the range 0.900-0.940 g/cm3, (b) a melt index MI2 (2.16 kg, 190° C.) in the range of 0.01-50 g/10 min, (c) a molecular weight distribution (Mw/Mn) in the range 3.5 to 4.5, and (d) a melt elastic modulus G?(G?=500 Pa) in the range 40 to 150 Pa. The copolymer has a melt index MI2 (2.16 kg, 190° C.) Dow Rheology Index (DRI) and melt elastic modulus G?(G?=500 Pa) satisfying the equations of [DRI/MI2]>0 and [DRI/MI2]<0.0225G??0.745.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: August 14, 2012
    Assignee: Ineos Europe Limited
    Inventor: Choon Kool Chai
  • Patent number: 8236912
    Abstract: Provided is a gas-barrier film having a high barrier property when it is folded. The gas barrier film is characterized in that an organic layer comprises a resin obtained by curing a monomer as a polymerizing ingredient and the monomer has a structure of pentahydric alcohol or more polyhydric alcohol having a molecular weight of from 200 to 800 in which at least 5 hydroxyl groups are substituted with an aliphatic carbonyloxy group of the following general formula (1): wherein R represents a hydrogen atom or a methyl group; L represents a linking group having a chain length of at least 4 atoms; n indicates 0 or 1; provided that at least 3 hydroxyl groups of the polyhydric alcohol are substituted with the aliphatic carbonyloxy group of formula (1), when n =1.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: August 7, 2012
    Assignee: Fujifilm Corporation
    Inventors: Tomoo Murakami, Yuya Agata
  • Patent number: 8211514
    Abstract: A reverse dispersion retardation film is formed by stretching a film containing a norbornene-based ring-opening copolymer containing a structural unit (A) represented by a general formula (1) and a structural unit (B) represented by a general formula (2), wherein a total amount of the structural unit (A) and an exo-form structural unit, among the structural units (B), is not less than 20 mol % but not more than 65 mol % of all the structural units.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: July 3, 2012
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Tadahiro Kaminade, Shinichi Komatsu, Hisashi Sone, Takeshi Koike, Sayako Kawahama
  • Patent number: 8207285
    Abstract: Mono-oriented film having a shrink rate at 100° C. of at least 15% and at least one layer of which comprises a propylene copolymer with ethylene and optionally other olefins of formula CH2?CHR in which R is an alkyl group containing from 2 to 10 carbon atoms, having at least 5.5% wt of ethylene, a melt flow rate according to ISO 1133 (230° C., 2.16 Kg) of less than 10, and a fraction of polymer soluble in xylene at 25° C. ranging from 14 to 30% weight based on the total weight of said copolymer. The said films are particularly suited for the manufacturing of shrink labels.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: June 26, 2012
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Michele Grazzi, Claudio Cavalieri
  • Patent number: 8202937
    Abstract: The present invention is to provide an optical film which exhibits low hygroscopicity, high transparency, high heat resistance and markedly lowered brittleness, and particularly to provide an optical film which is appropriately employed as a polarizing plate protective film for large liquid crystal display devices and outdoor liquid crystal display devices. The above optical film is characterized in that acrylic resin (A) and cellulose ester resin (B) are incorporated at a weight ratio of 95:5-30:70, weight average molecular weight Mw of aforesaid acrylic resin (A) is at least 80,000, total substitution degree (T) of the acyl group of aforesaid cellulose ester resin (B) is 2.0-3.0, the substitution degree of the acyl group having 3-7 carbon atoms is 1.2-3.0, and weight average molecular weight Mw of aforesaid cellulose ester resin (B) is at least 75,000. It is characterized that the total substitution degree of the acyl group other than carbon atoms of 3-7 of the cellulose ester resin (B) is at most 1.3.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: June 19, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Takebe, Masataka Takimoto, Nobuo Kubo
  • Patent number: 8188207
    Abstract: Process for producing high strength polyethylene films or tapes comprising the steps of: providing a quantity of disentangled polyethylene, applying a pressure of at least 20 bar to the quantity of disentangled polyethylene and a temperature between the ?-relaxation temperature and the melting temperature of the disentangled polyethylene Tm PE resulting in a block of disentangled polyethylene, skiving a film or tape off the block of disentangled polyethylene and, drawing said film or tape in a single or multi stage drawing step at a total draw ratio of at least 1:20.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: May 29, 2012
    Assignee: Novameer B.V.
    Inventors: Jan Adolph Dam Backer, Bart Clemens Kranz, Benjamin Slager
  • Patent number: 8168112
    Abstract: Blown films and processes of forming the same are described herein. The processes generally include providing a bimodal ethylene based polymer, blending the bimodal ethylene based polymer with at least about 30 ppm peroxide to form modified polyethylene and forming the modified polyethylene into a blown film.
    Type: Grant
    Filed: December 20, 2008
    Date of Patent: May 1, 2012
    Assignee: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Jay Nguyen
  • Patent number: 8101687
    Abstract: The present invention relates to a polyethylene resin having a multimodal molecular weight distribution, said resin being further characterized in that it has a density in the range of from about 0.925 g/ccm to about 0.950 g/ccm, a melt index (I2) In the range of from about 0.05 g/10 min to about 5 g/10 min, and in that it comprises at least one high molecular weight (HMW) ethylene interpolymer and at least a low molecular weight (LMW) ethylene polymer, and a composition comprising such resin. Also provided is a shaped article comprising said resin or composition, in particular a pipe.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: January 24, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Detlef Schramm, Wolfgang Quack, Julien Damen, Pak-Meng Cham
  • Publication number: 20110301309
    Abstract: [Object] To provide a propylene homopolymer suitable for capacitor films having high withstand voltage and a stretched film formed by stretching the propylene homopolymer. [Solution] A propylene homopolymer of the present invention for capacitors satisfies the following requirements (i) to (v) and (ix): (i) the MFR is 1 to 10 g/10 minutes; (ii) the meso pentad fraction (mmm) measured by 13C-NMR is 0.940 to 0.995; (iii) the integrted amount of elution at 90° C. by CFC using o-dichlorobenzene is 0.5% by weight or less; (iv) the melting point measured using DSC is 152° C. or more; (v) the chlorine content is 2 ppm by weight or less; and (ix) in an elution temperature-elution volume curve measured by cross-fractionation chromatography (CFC) using o-dichlorobenzene, the maximum peak has a peak top temperature in the range of 105° C. to 130° C. and half width of 7.0° C. or less.
    Type: Application
    Filed: January 26, 2010
    Publication date: December 8, 2011
    Inventors: Satoshi Tamura, Keita Itakura, Satoshi Hashizume
  • Patent number: 8067518
    Abstract: Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index of between 0.7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0.930 g/cc and 0.970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pa·s. Processes to produce these polymers are also disclosed.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: November 29, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Christopher R. Davey, James M. Farley, Rainer Kolb, Mark P. Ossowski
  • Patent number: 8058379
    Abstract: The present invention provides a 4-methyl-1-pentene polymer having excellent balance between heat resistance and rigidity, a process for producing the polymer, and a film and a LED mold formed from the polymer. The 4-methyl-1-pentene polymer comprises 50 to 100% by mass of a constituting unit derived from 4-methyl-1-pentene and 0 to 50% by mass of a constituting unit derived from at least one of olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene, wherein the 4-methyl-1-pentene polymer is obtainable by continuously feeding a monomer forming the 4-methyl-1-pentene polymer and an organic solvent to a polymerization reactor and continuously extracting a polymerization reaction mixture containing the resulting 4-methyl-1-pentene polymer from the polymerization reactor.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: November 15, 2011
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kazuaki Yasuda, Tooru Tanaka