Solid Polymer Derived From Reactant Containing A Carboxylic Acid Ester Group Patents (Class 525/222)
  • Publication number: 20030176576
    Abstract: It is an object of the present invention to provide a curable which has good storage stability and can give cured products retaining the high elongation characteristic originating from the polyether polymer and showing a high gel fraction and good weatherability.
    Type: Application
    Filed: April 4, 2003
    Publication date: September 18, 2003
    Inventors: Nao Fujita, Yasuo Shimizu, Nobuhiro Hasegawa, Yoshiki Nakagawa
  • Patent number: 6620890
    Abstract: A composition for peelable coating, which composition exhibits excellent properties such as film-formability and water resistance and can be dried at ambient temperature without any particular heating, to thereby provide excellent coating performance. The composition contains a core/shell copolymer including an acrylic copolymer portion A having a high glass transition temperature of 30° C.-70° C. and an acrylic copolymer portion B having a low glass transition temperature of 5° C. to −30° C. and being formed through multi-step polymerization. The core/shell copolymer is made up of 5-40 wt. % of the acrylic copolymer portion A and 60-95 wt. % of the acrylic copolymer portion B, on the basis of the total amount of the portion A and the portion B. The acrylic copolymer portion A and the acrylic copolymer portion B contain the same hard-polymer-providing monomer unit and soft-polymer-providing monomer unit.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: September 16, 2003
    Assignees: Rinrei Wax Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kenji Yamashita, Masayuki Matsuki, Noritsumi Matsuyama, Takanori Endo, Hideaki Tojo, Hisashi Kurota
  • Patent number: 6613841
    Abstract: A process for making MD (machine direction) oriented polyethylene film is disclosed. The process comprises blending a high-molecular weight, medium-density polyethylene (HMW MDPE) and a linear low-density polyethylene (LLDPE), converting the blend into a thick film, and orienting the thick film into a thinner film in the machine direction. The resulting film has high modulus, high gloss, low haze, and relatively high MD tear and dart impact.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: September 2, 2003
    Assignee: Equistar Chemicals, LP
    Inventor: Kelly L. Williams
  • Patent number: 6608140
    Abstract: A polymer blend is disclosed which comprises a blend of (1) one or more polymers made using a late transition metal catalyst, and (2) one or more polyolefins made using a free radical process or polymerized using a Phillips type (chromium oxide) catalyst, a metallocene catalyst, or a Ziegler-Natta catalyst.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: August 19, 2003
    Assignee: BP Chemicals Limited
    Inventors: Susan Katherine Christie, Warren Reed, John Norman Reid Samson
  • Patent number: 6608135
    Abstract: Polymer compositions including an olefinic polymer, a polar polymer and a compatibilizer are disclosed. The compatibilizer can be a block or graft copolymer including polymer portions that are compatible with the olefinic polymer and polymer portions that are compatible with the polar polymer.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: August 19, 2003
    Assignee: Teknor Apex Company
    Inventors: Raman Patel, Dan Mallin, Keith Saunders, Patrick Tiberio, John Andries
  • Patent number: 6605672
    Abstract: There is provided an excellent impact modifier for a vinyl chloride resin. There is used, as an excellent impact modifier, a copolymer which is prepared by polymerizing 10 to 70% by weight of a monomer or monomers containing 60 to 100% by weight of at least one vinyl monomer selected from the group consisting of a (meth)acrylate compound, an aromatic vinyl compound, a vinyl cyanide compound and vinyl chloride, and 0 to 40% by weight of the other monomer copolymerizable therewith, in the presence of 30 to 90% by weight of a hollow rubber particle of which glass transition temperature Tg is at most 0° C. and a void ratio is 3 to 90% by volume in a latex state, and which contains a cross linking agent in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total rubber component monomer.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: August 12, 2003
    Assignee: Kaneka Corporation
    Inventors: Akira Takaki, Toshio Mizuta, Tomomichi Hashimoto, Toshiyuki Mori
  • Patent number: 6602957
    Abstract: The present invention provides a thermoplastic elastomer composition comprising a high-molecular-weight thermoplastic elastomer, a low-molecular-weight thermoplastic elastomer affinitive for the high-molecular-weight thermoplastic elastomer, and a rubber component. The ratio of the number-average molecular weight (Mn1) of the high-molecular-weight thermoplastic elastomer to the number-average molecular weight (Mn2) of the low-molecular-weight thermoplastic elastomer is not less than 1.2 nor more than 500. The rubber is dynamically cross-linked and dispersed in the thermoplastic elastomers.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: August 5, 2003
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Takayuki Hattori, Tetsuo Mizoguchi, Yoshihisa Mizumoto, Hideyuki Okuyama
  • Patent number: 6602955
    Abstract: The present invention is directed to ion-sensitive, water-dispersible polymers. The present invention is also directed to a method of making ion-sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion-sensitive, water-dispersible binder compositions and their applicability in water-dispersible personal care products.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: August 5, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Dave A. Soerens, Yihua Chang, William S. Pomplun, Kenneth Y. Wang, Pavneet S. Mumick, Frederick J. Lang, Kelly D. Branham, Franklin M. Chen, Eric D. Johnson, Jeffrey D. Lindsay, Kim G. Schick, Walter T. Schultz, Tong Sun
  • Patent number: 6599980
    Abstract: The present invention provides: a coating composition, with which a 1-coat finish of plastic materials such as polyolefin materials can be performed, and which is aqueous and can be baked at 70° C. for 5 min. to have the following performance: high adhesion, excellent beef tallow resistance and alkaline resistance; and a coated article. The aqueous coating composition comprises: a poly(propylene chloride) resin emulsion including an poly(propylene chloride) resin which has a chlorine content of 15 to 25 weight % and a maleic anhydride moiety content of 1.0 to 5.0 weight %; an acrylic resin emulsion including an acrylic resin which is obtained by modifying the poly(propylene chloride) resin of 0 to 30 weight % and has a glass transition temperature of not lower than 90° C.; a polycarbodiimide crosslinking agent; and a resin powder. An article is coated with the above aqueous coating composition.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: July 29, 2003
    Assignees: Toyota Technical Center, U.S.A., Inc., Nippon Bee Research America, Inc., Nippon Bee Chemical Co., Ltd.
    Inventors: Juhan Kim, Jeffrey Makarewicz, Mamoru Kozaki, Kenichi Yasunaga, Jesse Fritcher, Takashi Watanabe
  • Patent number: 6596814
    Abstract: The present invention provides polypropylene films and methods of making these films using high melt strength &bgr;-crystalline polypropylene. The films of the present invention are opaque, porous and have good physical properties, such as being capable of cold drawing to a thin gauge without breaking.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: July 22, 2003
    Assignee: Sunoco Inc. (R&M)
    Inventors: Sehyun Kim, Masaki Fujii
  • Publication number: 20030134982
    Abstract: The present invention relates to a single- or multilayer product containing &agr;-olefin-vinyl alcohol copolymers and at least one &agr;-olefin-vinyl acetate copolymer, wherein the amount of vinyl acetate repeat units present in the &agr;-olefin vinyl acetate copolymer is in the range from 35 to 99.99% by weight, and these repeat units have good flexibility which permits processing films or other thin-walled items which are transparent after stretching or thermoforming, and to a process for producing the same, and to their use as packaging films.
    Type: Application
    Filed: August 5, 2002
    Publication date: July 17, 2003
    Inventors: Martin Hoch, Ulrich Itter, Roland Parg, Claus Wrana, Helmut Schulte, Peter Schwarz, Ralph Ulrich
  • Patent number: 6593426
    Abstract: The invention relates to additives for improving the cold flow properties of middle distillates, containing from 10 to 95% by weight of copolymers A), from 5 to 90% by weight of copolymers B) and, if required, from 0 to 70% by weight of copolymers C), which correspond to the following formulae: A) copolymers of lower olefins and vinyl esters, B) copolymers comprising B1) from 40 to 60 mol % of bivalent structural units of the formula  where X is O or N—R4 and in which a and b are 0 or 1 and a +b=1, and B2) from 60 to 40 mol % of bivalent structural units of the formula —H2C—CR11R5—  B2 and, if required, B3) from 0 to 20 mol % of bivalent structural units which are derived from polyolefins, the polyolefins being derivable from monoolefins having 3 to 5 carbon atoms, and in which a) R4 is an alkyl or alkenyl radical having 10 to 40 carbon atoms or an alkoxyalkyl radical having 1 to 100 alkoxy units and 1 to 30 carbon atoms in the alkyl
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: July 15, 2003
    Assignee: Clariant GmbH
    Inventors: Matthias Krull, Thomas Volkmer, Werner Reimann
  • Patent number: 6593428
    Abstract: The invention provides thermoplastic polymer alloy compositions based on syndiotactic polystyrene, ethylene copolymers and styrene block copolymers. They are useful in high temperature, chemical resistant molding applications. The compositions are formed by melt-blending under high shear. Preferably the composition contains syndiotactic polystyrene, an epoxy group-containing ethylene copolymer, an acid group-containing styrene copolymer, and optionally a styrene-containing block copolymer.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: July 15, 2003
    Assignee: E. I. duPont de Nemours and Company
    Inventor: David M. Dean
  • Patent number: 6590034
    Abstract: A peelable seal comprises a mixture of at least two immiscible polymers. The first polymer forms a continuous phase in the peelable seal, whereas the second polymer is dispersed in the continuous phase. For example, a peelable seal can also be made from a mixture of an ethylene polymer with a melt index in the range from about 0.1 to about 20 g/10 minutes and a propylene polymer with a melt flow rate in the range from about 0.01 to about 2 g/10 minutes. The two polymers define a shear viscosity differential: &Dgr;=|(&eegr;1−&eegr;2)/&eegr;1|, wherein &eegr;1 and &eegr;2 are the respective shear viscosity for the first and second polymers at a temperature of 230° C. and a shear rate of about 100 radian/second. Preferably, the shear viscosity differential is less than about 100%.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: July 8, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Jeffrey A. Wanic, Shaun E. Pirtle
  • Publication number: 20030125467
    Abstract: It is an object of the present invention to provide a rubber composition which can give a vulcanized rubber with low rolling resistance and excellent wet skid resistance and wear resistance, which is particularly useful for automobile tire treads and the like.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 3, 2003
    Inventors: Hiroshi Akema, Toshihiro Tadaki, Yoshiyuki Udagawa, Tomohisa Konno, Takafumi Fueki, Hajime Kondou
  • Patent number: 6586529
    Abstract: The present invention is directed to water-dispersible polymers. The present invention is also directed to a method of making water-dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising water-dispersible binder compositions and their applicability in water-dispersible personal care products.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: July 1, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Pavneet S. Mumick, Franklin M.C. Chen, Yihua Chang
  • Patent number: 6579583
    Abstract: The invention provides a flexible plastic formulation capable of being extruded, blow-molded, ethylene oxide and radiation sterilized. The plastic formulation of the invention comprises: a) from about 60 to about 94 percent by weight of a copolymer consisting essentially of ethylene and vinyl acetate units; b) from about 5 to about 25 percent by weight of a block copolymer, the block copolymer consisting essentially of a central block copolymer molecule including generally equal proportions of ethylene and butylene units, and terminal blocks of polystyrene; and c) from about 1 to about 15 percent by weight of an ultra-low density polyethylene material. The plastic formulations of the invention are useful in the manufacture of blood bags, tubing and the like.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: June 17, 2003
    Assignee: Baxter International Inc.
    Inventor: Indrajit Patel
  • Publication number: 20030109640
    Abstract: Disclosed is a process for reducing the self-adhesiveness of polytrimethylene terephthalate pellets, which can be carried out in a continuous or batch manner comprising the steps of:
    Type: Application
    Filed: November 25, 2002
    Publication date: June 12, 2003
    Inventors: James Gao Lee, Thomas Louis De Lellis, Edward James Denton, Kevin Dale Allen, Stefan Deiss, Klaus Mackensen
  • Patent number: 6569946
    Abstract: Polymer composition comprising (A) (co)polymers based on chlorotrifluoroethylene (PCTFE) and (B) copolymers based on ethylene/chlorotrifluoroethylene (ECTFE) and/or ethylene/tetrafluoroethylene (ETFE).
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: May 27, 2003
    Assignee: Ausimont SpA
    Inventors: Julio A. Abusleme, Claudia Manzoni
  • Patent number: 6565616
    Abstract: The invention relates to blends of copolymers containing structural units of olefins, derivatives of dibasic carboxylic acids and, if required, polyolefins and, structural units of ethylene and vinyl esters of tertiary carboxylic acids, and their use as additives to fuel oils for improving their cold flow properties.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: May 20, 2003
    Assignee: Clariant GmbH
    Inventors: Matthias Krull, Thomas Volkmer, Werner Reimann
  • Patent number: 6562908
    Abstract: Described are a thermoplastic resin composition containing (A): one or more rubber reinforced thermoplastic resins, (B): one or more acrylic resins and (C): one or more thermoplastic norbornene resins, and further containing (D): one or more styrenic resins other than (A) and (E): coloring agents as needed, and a shaped article obtained by forming the composition. Described thermoplastic resin composition is excellent in heat resistance, strength and processability, and excellent in laser marking properties, so that it is useful for various applications.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: May 13, 2003
    Assignee: JSR Corporation
    Inventors: Shinichiro Zen, Akira Shimizu
  • Patent number: 6562906
    Abstract: The present invention relates to compositions and preparative process of partially or fully neutralized mixtures of carboxylate functionalized ethylene high copolymers or terpolymers (Mw between 80,000 and 500,000) with carboxylate functionalized ethylene low copolymers (Mw between 2,000 and 30,000) and organic acid salts and injection or compression molded applications such as golf ball components thereof.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: May 13, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John C. Chen
  • Patent number: 6559232
    Abstract: The present invention provides a thermoplastic resin composition comprising (a) 100 parts by weight of a resin selected from the group consisting of polypropylenes and copolymers composed mainly of propylene, (b) 5 to 350 parts by weight of a resin selected from the group consisting of polyethylenes and copolymers composed mainly of ethylene, the resin having been prepared using a single site catalyst, and (c) 5 to 200 parts by weight of an ionomer resin or its ester. The present thermoplastic resin composition is excellent in mechanical properties and heat bonding property to various resins, and causes no bleeding out of softening agents, thereby the softness of the shaped articles obtained from the composition can be easily controlled. The present invention also provides a laminated article comprising a layer of the resin composition.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: May 6, 2003
    Assignee: Riken Technos Corporation
    Inventors: Kouichi Inoue, Toshimi Yamanaka, Takeshi Yuasa
  • Patent number: 6559230
    Abstract: Safety glass interlayers are prepared from a composition comprising: A. A homogeneously linear or substantially linear ethylene/&agr;-olefin interpolymer, e.g., ethylene/1-octene; B. A coagent containing at least two vinyl groups, e.g., trimethyol propane tri(meth)acrylate; and C. A peroxide, e.g., Luperox™ 101. The interlayer films exhibit an excellent combination of tear strength and clarity.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: May 6, 2003
    Assignee: DuPont Dow Elastomers L.L.C.
    Inventors: Henry G. Heck, Douglas P. Waszeciak
  • Patent number: 6552130
    Abstract: A resin composition comprising (A) a (meth)acrylic acid ester (B) and an acrylic polymer soluble in the component (A) and further (C) a compound having a mercapto group (—SH) and a carboxyl group (—COOH) in the molecule or an component (C) and (F) an organic amine or an component (F) and (G) a radical trapping agent. The composition is suitably used as a covering material for civil engineering and construction applications.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: April 22, 2003
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Takayuki Makino, Toshio Takemoto
  • Patent number: 6548600
    Abstract: Rheology-modified thermoplastic elastomer compositions comprising a melt blend of an ethylene/&agr;-olefin polymer and a high melting polymer such as polypropylene or a propylene/&agr;-olefin copolymer wherein the rheology modification is induced by a combination of a peroxide and a free radical coagent. The resulting compositions have an elastomeric phase, a non-elastomeric phase and certain physical properties that exceed those of a like composition that is rheology-modified by peroxide alone. The compositions can be used to make a variety of articles of manufacture, such as automotive instrument panel skins, via calendaring and thermoforming procedures.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: April 15, 2003
    Assignee: DuPont Dow Elastomers L.L.C.
    Inventor: Kim L Walton
  • Patent number: 6544642
    Abstract: The present invention relates to a disposable absorbent articles such as diapers and sanitary napkins which are provided with adhesives for attachment of the article to the skin. In particular the present invention relates to adhesives which provide secure attachment and are pleasing to the skin upon application, yet cause no discomfort upon removal. In particular the present invention relates to an adhesive which provide secure attachment to oily and greasy skin. Preferably the adhesive also provides secure attachment under moist and wet skin conditions and which maintains adhesive peel strength even under exposure to excess water.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 8, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Fabio Cinelli, Antonello Colaianni, Adelia Alessandra Tordone, Hugh Semple Munro, Brian John Tighe
  • Patent number: 6545094
    Abstract: A blend which comprises; A) a heterogeneous or homogenous linear ethylene homopolymer or interpolymer; B) a branched homopolymer or interpolymer;  wherein said blend has; 1) a melt index, I2, of about 0.05 to about 20 g/10 min; 2) a flexural modulus of ≧100,000 psi or ≦30,000 psi; 3) a melt strength of ≧2 cN; 4) a melt extensibility of ≧25 mm/sec; and 5) wherein said melt strength of said blend meets the following relationship; Melt strength≧FMS*[(f*A)+((1−f)*B)]; where: A=3.3814*(I2)−0.6476 and B=16.882*(I2)−0.6564; where  I2 is the measured melt index of the blend; f is the weight fraction of the linear polyethylene in the blend and FMS is ≧1.1. Also included in the present invention are foams, films, fibers, blow molded articles, wire and cable articles and extrusion coatings comprising said blend.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: April 8, 2003
    Assignee: The Dow Chemical Company
    Inventors: Thomas Oswald, Bharat I. Chaudhary, Jeffrey D. Weinhold
  • Patent number: 6538068
    Abstract: The present invention relates to film consisting of a blend comprising (i) 70 to 98% by weight of a polymer (Z) chosen from (a) a poly-ethylene (C) obtained by metallocene catalysis, (b) a copolymer (A) of ethylene and of a monomer chosen from vinyl acetate, the vinyl acetate content being between 18 and 40% by weight and an alkyl (meth)acrylate and (c) a blend thereof, (ii) 2 to 30% by weight of high-density polyethylene. The present invention also relates to gloves made of the above films. These gloves are manufactured by thermal welding of the films.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: March 25, 2003
    Assignee: Atofina
    Inventor: Michel Degrand
  • Patent number: 6534173
    Abstract: The invention concerns a composition comprising an ethylene/alpha-olefin metallocene copolymer of density less than 0.900 g/cm3 and an ethylene/alkyl (meth)acrylate radical copolymer. The invention also concerns films obtained from said composition, in particular a stretchable adhesive film, and a high temperature extrusion method.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: March 18, 2003
    Assignee: Elf Atochem S.A.
    Inventor: Marius Hert
  • Publication number: 20030050366
    Abstract: Compositions of acrylic polymers comprising: A) from 70% to 99.5% by weight of a thermoplastic resin based on homopolymers or copolymers formed by monomers containing only one double bond polymerizable by radical route, of which at least 20% by weight are (meth)acrylic monomers, B) from 0.5% to 30% by weight of a preferably crosslinked elastomer having an on-set glass transition temperature (Tg) lower than 0° C., in said composition the component B) being dispersed in the resin A) under the form of spherical and/or elongated particles having a diameter in the range of about 10 nm-2,000 nm, the particles of component B) optionally including particles of component A).
    Type: Application
    Filed: July 31, 2002
    Publication date: March 13, 2003
    Inventors: Fabio Giberti, Andrea Anghileri, Simona Bigi, Umberto Moschetti
  • Patent number: 6531520
    Abstract: The invention relates to polymer blends which can be used both in foamed and unfoamed states as a replacement for conventional EPDM and other elastomers. The composition of the blend includes a single-site catalyzed polyolefin resin having a density of below 0.878 g cm−3 and up to 40 weight percent a polyolefin including ethylene and propylene. The polymer blend is cross-linked. The polymer blends are formable-and foamable. The use of sulfur to vulcanize the polymer blend is not necessary. The polymer blends can be used to make foam for floatation or for making gaskets.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: March 11, 2003
    Assignee: Sentinel Products Corporation
    Inventors: John D. Bambara, Matthew L. Kozma, Todd Cagwin, Robert F. Hurley
  • Patent number: 6528588
    Abstract: Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of at least one rubbery elastomer by using a chromium-based or molybdenum-based catalyst composition.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: March 4, 2003
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Patent number: 6528587
    Abstract: The present invention relates to a coextrusion binder comprising: 5 to 35 parts of a polymer (A) which itself consists of a blend of 80 to 20 parts of a metallocene polyethylene (A1) of relative density between 0.865 and 0.915 and of 20 to 80 parts of a non-metallocene LLDPE polyethylene (A2), the blend of (A1) and (A2) being cografted by an unsaturated carboxylic acid; 95 to 65 parts of a polyethylene (B) chosen from ethylene homopolymers or copolymers and elastomers; the blend of (A) and (B) being such that: the content of grafted unsaturated carboxylic acid is between 30 and 100 000 ppm, the MFI or melt flow index (ASTM D 1238 standard: 190° C./2.16 kg) is between 0.1 and 10 g/10 min. The present invention also relates to a multilayer structure.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: March 4, 2003
    Assignee: Atofina
    Inventors: Patrice Robert, Christophe Le Roy, Jerome Pascal
  • Publication number: 20030032730
    Abstract: There is provided a transparent or semitransparent resin composition which can be easily cut.
    Type: Application
    Filed: June 25, 2002
    Publication date: February 13, 2003
    Inventors: Katsutoshi Ogawa, Kiyoshi Ohtsu, Atsuhiko Mukai
  • Patent number: 6514583
    Abstract: A heat-shrinkable film containing a homogeneous ethylene/alpha-olefin copolymer has a high impact strength and a high free shrink. The film can be a monolayer film or multilayer film, with the homogeneous ethylene/alpha-olefin copolymer present alone or in a blend, and in one or more film layers. The film is especially suited for use in heat-shrinkable bags, which can be used for the packaging of various products, especially meat.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: February 4, 2003
    Assignee: Cryovac, Inc.
    Inventors: Kelly R. Ahlgren, Robert Babrowicz, Solomon Bekele, Blaine C. Childress, Marvin R. Havens, Vincent W. Herran, Ronald D. Moffitt, Gautam P. Shah, George D. Wofford
  • Patent number: 6515074
    Abstract: Flexible thermoplastic polymer alloy compositions and process for preparing same are disclosed. The composition comprises a blend of about 20 to about 40 weight percent (hereinafter “wt. %”) polypropylene; about 20 to about 50 wt. % uncrosslinked ethylene copolymer; about 2 to about 15 wt. % functionalized polymers, which functionalized polymers typically include maleated polypropylene; and about 1 to about 10 wt. % amines, which amines typically include long chain amines. Processes for mixing the compositions are also included.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: February 4, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Srimannarayana Kakarala, Dean Madden Bayer, Suresh Deepchand Shah, Jason Bruce Clock
  • Publication number: 20030022998
    Abstract: The subject invention provides a film having at least one layer comprising an interpolymer of ethylene and at least on comonomer selected from the group consisting of C3-C20 &agr;-olefins, dienes, and cycloalkenes, wherein the interpolymer is characterized as having a high degree of processability, good optical performance, and good mechanical properties. The subject invention further provides film fabrication processes and polymer compositions which are useful in preparing the subject films.
    Type: Application
    Filed: July 31, 2002
    Publication date: January 30, 2003
    Applicant: The Dow Chemical Company
    Inventors: Seema V. Karande, Lonnie G. Hazlitt, Pradeep Jain, Kaelyn Koch, Shih-Yaw Lai, Li-Min Tau
  • Publication number: 20030022974
    Abstract: The present invention provides a resin composition having an oxygen scavenging function. The resin composition comprises 70 to 99.9 wt % of a polyvinyl alcohol resin (A) and 0.1 to 30 wt % of a thermoplastic resin (B) other than the polyvinyl alcohol resin (A), wherein the thermoplastic resin (B) has a carbon-carbon double bond and a functional group including a hetero atom, and an oxygen absorption rate of the resin composition is 0.001 m//m2 day or more.
    Type: Application
    Filed: May 1, 2002
    Publication date: January 30, 2003
    Inventors: Shinji Tai, Hiroyuki Shimo, Masakazu Nakaya, Mizuho Maeda
  • Patent number: 6512081
    Abstract: This invention relates to the synthesis of dithiocarboxylic acid esters by reaction of bis(thioacyl) disulphides, thioacetals or vinylidane bis(thioether) with free-radicals (optionally in the presence of monomers). The invention also relates to processes for the synthesis of polymers utilising these dithioesters as polymerisation regulators (chain transfer agents) or to the use of bis(thioacyl) disulphides to generate dithioester chain transfer agents in situ.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: January 28, 2003
    Assignees: E.I. DuPont Nemours and Company, Commonwealth Scientific and Industrial Research Organisation
    Inventors: Enzio Rizzardo, San Hoa Thang, Graeme Moad
  • Patent number: 6512052
    Abstract: The present invention relates to a polypropylene resin composition for automobile interior covering methods capable of calender molding and high frequency welding. More particularly, the present invention relates to the polypropylene resin composition capable of calender molding and high frequency welding, which the same comprises a reactor-type polypropylene resin with excellent melt tension, an ethylene-vinyl acetate copolymer having polarity, an ethylene-glycidyl methacrylate-methyl acrylate terpolymer and a phthalate and thus useful for the automobile interior covering materials.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: January 28, 2003
    Assignee: Hyundai Motor Company
    Inventor: Kie-Youn Jeong
  • Publication number: 20030018114
    Abstract: The present invention provides a resin composition having an oxygen scavenging function. The resin composition comprises a gas barrier resin (A), a thermoplastic resin (B) other than the gas barrier resin (A), and a compatibilizer (C), wherein the gas barrier resin (A) has an oxygen transmission rate of 500 ml·20 &mgr;m/m2·days·atm (20° C., 65% RH) or less, the thermoplastic resin (B) has a carbon-carbon double bond, and an oxygen absorption rate of the resin composition is 0.001 m/m2·day or more.
    Type: Application
    Filed: May 1, 2002
    Publication date: January 23, 2003
    Inventors: Shinji Tai, Hiroyuki Shimo, Masakazu Nakaya, Kaoru Ikeda
  • Patent number: 6506840
    Abstract: A process for producing a succinimide resin composition is provided which comprises reacting a maleic anhydride-olefin type copolymer constituted of 40-60 mol % of maleic anhydride units, 60-40 mol % of olefin units, and 0-20 mol % of a copolymerizable monomer units with one or more amine compounds for imide formation in the presence of a second polymer other than the succinimide resin. This process improves the productivity by lowering the torque in the extrusion reaction, giving a succinimide copolymer resin composition having low yellowness and high transparency with high production efficiency.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: January 14, 2003
    Assignee: Tosoh Corporation
    Inventors: Takeshi Harunari, Yoshiki Uchida, Toru Doi
  • Patent number: 6506839
    Abstract: An elastomer composition obtained by crosslinking 1-99 parts by weight of a crosslinkable rubber-like polymer (A) and 1-99 parts by weight of a polypropylene resin (B) [the total amount of (A) and (B) being 100 parts by weight], where (B) is a crosslinking type polypropylene resin, has a flexural modulus of 100-10000 kgf/cm2 as specified in JIS K6758 and has a melting point peak in the range of 100-150° C. in differential scanning calorimetry (DSC), the melting point peak calorie being in the range of 10-600 J/g, especially the above elastomer composition wherein (A) has a crosslinking degree of 1-95% and a swelling degree of 3-100.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: January 14, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hajime Nishihara, Shinichi Shibayama
  • Patent number: 6506841
    Abstract: The present invention relates to a composition that is extrudable and cross-linkable in air. The composition that is extrudable and cross-linkable in air comprises a mixture of a copolymer with an ethylenically-unsaturated compound and an unsaturated ester, a hydrolizable silane compound having no ethylenic unsaturation containing functional groups, and a thermoplastic polymer having no functional groups, said functional groups of the ester being selectively reactive with the functional groups of the silane compound. Such a composition is used to fabricate a material for insulating or sheathing a power cable, in particular a medium-voltage cable or a cable for working at a voltage of less than 20 kV. The invention also provides method enabling said composition to be cross-linked and power cables including insulation and/or a sheath containing the composition obtained by the method.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: January 14, 2003
    Assignee: Nexans
    Inventors: Lionel Fomperie, Madeleine Prigent
  • Patent number: 6506843
    Abstract: To provide a thermosetting powder coating composition which comprises a powder of a composite resin comprising a vinylidene fluoride polymer having crosslinkable functional group and a methyl methacrylate polymer and having a melt flow rate of 1 to 1,000 g/10 min when measured at 130° C. at a load of 2.1 kg. The coating composition has advantages that the preparation thereof is easy because pulverization can be carried out at room temperature as well as at low temperatures, the composite resin has excellent compatibility with various curing agents and the composition gives a coating film having excellent properties.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: January 14, 2003
    Assignee: Dajkin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Takahiro Kitahara, Ryuji Iwakiri, Masaru Nagato, Ryoichi Fukagawa, Go Nagai
  • Patent number: 6506835
    Abstract: A novel composition is disclosed which comprises polyvinyl chloride, an ethylene-based copolymer as a compatibilizer, inorganic fillers and from about 5 to 95 percent by weight of either virgin or recycled/recovered polyvinyl butyral. A process for preparing this novel composition is also provided.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: January 14, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: George Henry Hofmann
  • Publication number: 20030008954
    Abstract: An objective of the invention is to provide a rubber composition which has satisfactory processability and dimension stability, and the like gives a vulcanized rubber exhibiting excellent wearing resistance and tensile strength, and the like and thus is useful in a belt, a hose and a tire, and the like. A rubber composition of the invention comprises [1] a crosslinked rubber particle component whose toluene-insolubles is 50 % by weight or more and whose number mean particle size is 3 to 1000 nm and [2] a non-crosslinked rubber component whose toluene-insolubles is less than 20 % by weight. This crosslinked rubber particle component is a polymer comprising at least one selected from (1) a conjugated diene unit, (2) a conjugated diene unit and an a, -unsaturated nitrile unit and (3) a conjugated diene unit and an acrylate unit as well as a monomer unit having at least 2 polymerizable unsaturated groups.
    Type: Application
    Filed: April 27, 2001
    Publication date: January 9, 2003
    Applicant: JSR Corporation
    Inventors: Toshihiro Tadaki, Tomohisa Konno, Yoshiyuki Udagawa, Hiroshi Akema
  • Patent number: 6503987
    Abstract: There is provided a modifier composition for a methacrylate resin, which can stably give a molded article excellent in strength without deteriorating transparency, color tone and appearance thereof under a wide range of injection molding conditions. A modifier composition for a methacrylate resin of the present invention comprises an impact modifier, a polymer processing aid and a reducing compound, wherein an amount of the impact modifier to the polymer processing aid is 95/5 to 80/20 in weight, and an amount of the reducing compound is 0.25 to 1.25 parts by weight based on 100 parts by weight of the total amount of the impact modifier and the polymer processing aid.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: January 7, 2003
    Assignee: Kaneka Corporation
    Inventors: Fuminobu Kitayama, Takahiko Sugaya, Norio Nagata, Akira Takaki
  • Publication number: 20030004271
    Abstract: An acrylate ester polymer composition having the desirable optical properties of poly(meth)acrylates and an enhanced Tg comprises a blend of a conventional PMMA polymer or copolymer with a high Tg acrylate ester polymer prepared by pyrolyzing a copolymer of methyl methacrylate and t-butyl methacrylate. The blend exhibits a single Tg, intermediate between the Tg of the conventional PMMA polymer and that of the pyrolyzed methyl methacrylate/t-butyl methacrylate copolymer. The blend can be formed into products that have good clarity, low haze and low color.
    Type: Application
    Filed: April 22, 2002
    Publication date: January 2, 2003
    Inventors: Tom V. Faris, Greg T. Gordon, David T. Chan