Process Of Preparing A Cellular Product Of A Plastisol Of A Solid Polymer Derived Solely From Ethylenically Unsaturated Monomers; Forming A Plastisol Of A Solid Polymer Derived Solely From An Ethylenically Unsaturated Monomer Which Is Designed To Be Formed Into A Cellular Product, Or Composition Thereof Patents (Class 521/73)
  • Patent number: 10689509
    Abstract: Provided is a powder moldable vinyl chloride resin composition for a real-stitched surface skin that is capable of providing a molded product having excellent flexibility at low temperatures and real stitching properties. The powder moldable vinyl chloride resin composition for a real-stitched surface skin contains vinyl chloride resin particles (a) having an average degree of polymerization of at least 1,200 and no greater than 5,000, a trimellitate plasticizer (b), and vinyl chloride resin fine particles (c) having an average degree of polymerization of at least 1,000 and no greater than 5,000.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 23, 2020
    Assignee: ZEON CORPORATION
    Inventors: Shota Nishimura, Takanori Fujiwara
  • Patent number: 9006303
    Abstract: The invention provides a particulate material comprising porous polymeric microparticles having a mesoporous structure. A process for making the particles is also presented. The process comprises impregnating a porous microparticulate template material with a liquid comprising one or more monomers. The one or more monomers are then polymerized in and/or on the template material to form a polymer, and the template material is then removed to produce the particulate material.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: April 14, 2015
    Assignee: Agency for Science, Technology and Research
    Inventors: Yugen Zhang, Jackie Y. Ying, Pranab K. Singapore
  • Publication number: 20130310471
    Abstract: The invention relates to a foamable composition containing at least one polymer selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, polyvinyl butyrate, polyalkyl (meth)acrylate and copolymers thereof, a foam former and/or foam stabilizer and diisononyl 1,2-cyclohexanedicarboxylate as plasticizer. The invention further relates to foamed mouldings and to use of the foamable composition for floor coverings, wall coverings or artificial leather.
    Type: Application
    Filed: October 31, 2011
    Publication date: November 21, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Hinnerk Gordon Becker, Michael Grass, Andre Huber
  • Publication number: 20130310472
    Abstract: The invention relates to a foamable composition containing a polymer selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, polyvinyl butyrate, polyalkyl(meth)acrylate and copolymers thereof, a foam former and/or foam stabilizer and di-2-ethylhexyl terephthalate as plasticizer. The invention further relates to foamed mouldings and to use of the foamable composition for floor coverings, wall coverings or artificial leather.
    Type: Application
    Filed: October 31, 2011
    Publication date: November 21, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Hinnerk Gordon Becker, Michael Grass, Andre Huber
  • Publication number: 20130303640
    Abstract: The present invention relates to a vinyl chloride resin composition containing diethylhexylcyclohexane as a plasticizer. Diethylhexylcyclohexane may replace controversial phthalate based plasticizers to prevent environmental contamination and have significantly low initial viscosity and low-temperature viscosity and a remarkably low low-temperature viscosity with the passage of time as compared to the existing phthalate based plasticizers and dioctyl terephthalate, which is a non-phthalate based plasticizer, such that the vinyl chloride resin composition containing the diethylhexylcyclohexane plasticizer may have excellent workability and generate less volatile organic compounds, thereby making it possible to apply this composition to develop eco-friendly products.
    Type: Application
    Filed: January 18, 2012
    Publication date: November 14, 2013
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Jae Song Kim, Kyong Jun Yoon, Yeon Su Jang, Ki Jo Sim
  • Patent number: 8569062
    Abstract: The present invention relates to a cryogel which contains a polyol selected from polyvinyl alcohol or galactomannan and a co-polymer of Formula I: The cryogel is formed by mixing the monomers of the co-polymer of Formula I at a temperature of less about 5 degrees C. with the polyol and a free radical initiator in an aqueous solution and polymerizing the solution to form the cryogel. The cryogel is used for culturing cells and can be decomposed by contact with a monosaccharide.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: October 29, 2013
    Assignee: Indian Institute of Technology Kanpur
    Inventor: Ashok Kumar
  • Patent number: 8436105
    Abstract: The invention relates to a composition that can be thermally cured, containing relative to the total composition, a) 5 to 90% by weight of a diene-based polymer or copolymer containing an olefinic double bond and/or an aromatically substituted olefin, wherein the polymer or copolymer is liquid, or paste-like, at 22° C. and has a glass transition temperature between ?30° C. and +15° C., measured according to a DSC method; b) a vulcanization system selected from the group consisting of: b1) sulfur, and one or more accelerator(s), b2) peroxidic or disulfidic vulcanization systems, b3) quinones, quinone dioximes, or dinitrosobenzene.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: May 7, 2013
    Assignee: Henkel AG & Co. KGaA
    Inventors: Rainer Kohlstrung, Takehito Yamada
  • Publication number: 20130078445
    Abstract: A foam comprises (a) starch, (b) plasticizer, (c) compatibilizer, and (d) polyolefin selected from one or more of ethylene homopolymer, ethylene/alpha-olefin copolymer, ethylene/vinyl ester of aliphatic carboxylic acid copolymer, propylene homopolymer, and propylene copolymers. The ratio of A to B is at least 0.01, where A is the sum of the weights of components (a) and (b), and B is the sum of the weights of components (a) though (d). The foam may have a density of at most 10 pounds/cubic foot.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: Sealed Air Corporation, Cryovac, Div.
    Inventors: Natarajan S. Ramesh, Emanuel M. DaSilva
  • Patent number: 8277719
    Abstract: A process for the preparation of thermoplastic auxetic foams comprising the steps of: a) taking conventional thermoplastic foam; b) subjecting said foam to at least one process cycle wherein the foam is biaxially compressed and heated; c) optionally subjecting the foam to at least one process cycle wherein the biaxial compression is removed and the foam mechanically agitated prior to reapplying biaxial compression and heating; d) cooling said foam to a temperature below the softening temperature of said foam; and e) removing said compression and heat.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: October 2, 2012
    Assignee: Auxetic Technologies Ltd.
    Inventors: Andrew Alderson, Kim Lesley Alderson, Philip John Davies, Gillian Mary Smart
  • Patent number: 8168293
    Abstract: Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4,4?-diisocyanate and modified diphenylmethane-4,4-diisocyanate s and mixtures thereof; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl-tetrahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, cyclohexane-1,2-dicarboxylic anhydride, methyl-endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof; at least a surfactant; at least a foaming agent.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: May 1, 2012
    Assignee: Diab International AB
    Inventors: Leone Lauri, Sam Shehyee Ang, Jan Jerry Christian Stigsson, Raffaela Bressan
  • Publication number: 20110318279
    Abstract: The invention relates to novel masticatory masses for oral hygiene, made from foamed synthetic polymers, a method for production and use thereof.
    Type: Application
    Filed: April 12, 2007
    Publication date: December 29, 2011
    Applicant: BAYERMATERIALSECIENCE AG
    Inventors: Meike Niesten, Steffen Hofacker, Thorsten Rische, Sebastian Dörr, Thomas Feller, Thomas Michaelis
  • Patent number: 7919541
    Abstract: The present invention concerns a method of manufacturing flame-retardant polyethylene or polypropylene foam using a derivative of carboxylic acid of phenylphosphinic acid and the flame-retardant polymer foam made thereby. More specifically, this invention concerns a method of manufacturing highly expanded flame-retardant polymer foam prepared by mixing the above mentioned phosphorous flame retardant in a polymer resin and expanding the mixture with a volatile blowing agent or by applying a solution of an organic phosphorous compound to an already-made highly expanded foam and then drying the highly-expanded polymer foam, and the flame-retardant foam prepared thereby.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: April 5, 2011
    Inventor: Chung Poo Park
  • Patent number: 7812080
    Abstract: Plastisols are provided which are effective for providing a foamed composition having an improved color. The plastisol includes a dispersed phase and a liquid phase. The dispersed phase includes an organic polymer and the liquid phase includes a plasticizer for said polymer. The plasticizer utilized has a hydroxyl number of about 30 or greater, and an acidity of not less than about 0.1% as benzoic acid.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: October 12, 2010
    Assignee: Genovique Specialties Holdings Corporation
    Inventors: William D. Arendt, Makarand V. Joshi
  • Publication number: 20080139680
    Abstract: Plastisols are provided which are effective for providing a foamed composition having an improved color. The plastisol includes a dispersed phase and a liquid phase. The dispersed phase includes an organic polymer and the liquid phase includes a plasticizer for said polymer. The plasticizer utilized has a hydroxyl number of about 30 or greater, and an acidity of not less than about 0.1% as benzoic acid.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Inventors: William D. Arendt, Makarand V. Joshi
  • Patent number: 7354970
    Abstract: A novel polyvinyl chloride copolymer paste resin comprising a copolymer of a vinyl chloride monomer and a macromonomer of the present invention can be synthesized with high productivity, and can provides a plastisol having high gelation properties, storage stability, superior tensile properties in low-temperature working conditions and heat resistance.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: April 8, 2008
    Assignee: Kaneka Corporation
    Inventors: Mitsuyoshi Kuwahata, Shinbe Matsuzaki, Toshihito Kawauchi, Nobuki Toba
  • Patent number: 7160929
    Abstract: U.S. Pat. No. 6,232,354 issued May 15, 2001 describes an environmentally friendly and commercially practicable process for the production of microcellular polymer foams from amorphous, semi-crystalline and crystalline polymers which involves consolidating the polymer, saturating the polymer with an inert gas at elevated temperature and under elevated pressure, and controllably cooling, i.e. quenching the saturated polymer under a variety of temperature and pressure conditions to produce either a closed or open celled microcellular foam or a high density microcellular foam. It has now been discovered that a process similar to that described in this patent can be used for the production of nanocomposite and molecular-composite foams that exhibit exceptional physical properties.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: January 9, 2007
    Assignee: Wrigt Materials Research Co
    Inventor: Seng Tan
  • Patent number: 6949588
    Abstract: Thermoplastic polymer foams having sound deadening properties satisfactory for demanding applications are provided which have mechanical strength, which are economical to manufacture, and which are hydrolytically stable. Methods of preparing these foams are also provided. The foams are useful in sound management, cushion packaging, filtering, and fluid absorption and exhibit one or more of the following properties: 1) average cell size greater than about 2 mm; 2) substantially open-cell structure and 3) relatively large pores connecting the cells. In order that the foam be acoustically active, the foam should possess a substantially open-cell structure and a relatively low airflow resistivity. Foams with substantially open-cell structure and relatively low airflow resistivity are prepared by mechanically opening a foam having an average cell size greater than about 2 mm. In most cases, such mechanical opening creates relatively large pores connecting the cells.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: September 27, 2005
    Assignee: Dow Global Technologies Inc.
    Inventor: Chung P. Park
  • Patent number: 6861476
    Abstract: Compositions of elastoplastic ionomeric polymers having hardness below 92 points Shore A. comprising polar elastomers (10-45 wt. %), such as polyacrylic and nitrile rubbers, apolar crystalline polyolefins (15-40 wt. %) and elastoplastic polyolefins (25-75 wt. %). These compositions are used for making single-layer and multilayer laminar products that can be bonded by radio-freqeuncy welding, and manufactured articles possessing antistatic properties.
    Type: Grant
    Filed: May 19, 2001
    Date of Patent: March 1, 2005
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Vittorio Braga, Virginie Lietard
  • Publication number: 20040229966
    Abstract: The present invention relates to an imaging element comprising at least one image receiving layer and a support, wherein said image receiving layer comprises an open celled microcellular foam. The present invention also relates to an imaging element comprising at least one image receiving layer, an absorbing layer and a support, wherein the absorbing layer comprises an open celled microcellular foam.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 18, 2004
    Applicant: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Jehuda Greener, Cathy A. Fleischer
  • Patent number: 6803417
    Abstract: Slush moldable polyolefin powders are prepared by blending a crosslinkable silane-grafted, olefinic interpolymer, optionally containing a crystalline polypropylene homopolymer or interpolymer; and a crosslinked silane-grafted, olefinic interpolymer containing a cure catalyst, the blend optionally containing a crystalline polyolefin powder. The resulting compositions can be slush molded to make a variety of articles of manufacture, especially automotive interior components, having good hot tear properties, low hardness and no glossing after heat aging.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: October 12, 2004
    Assignee: Dupont Dow Elastomers L.L.C.
    Inventors: Stephen H. Cree, Timothy E. Clayfield
  • Patent number: 6716914
    Abstract: An expanded cellular ethylenic polymer product is provided from an irradiated, noncross-linked linear ethylenic polymer. Linear ethylenic polymers can be irradiated at ambient conditions sufficient to introduce branching in the polymer in the absence of detectable cross-linking as indicated by the absence of gels. The irradiated linear ethylenic polymer is compatible with highly branched low density polyethylene and, when mixed therewith, produces a resin having a single broad based melting temperature range as determined by direct scanning calorimetry, which indicates that the polymers in the mixture have similar crystallization behavior suitable for producing low density foams by extrusion foaming. The linear polymers can be obtained from recycled shrink wrap film. Low densities of from 0.7 to less than 4 pcf can be achieved. The foams typically have improved tear resistance as compared to previous products prepared from low density polyethylene, at comparable low densities.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: April 6, 2004
    Assignee: Sealed Air Corporation (U.S.)
    Inventors: Nelson E. Malwitz, Natarajan S. Ramesh, Shau-Tarng Lee
  • Publication number: 20040043271
    Abstract: The electrochemical performance of an ion-exchange membrane in a fuel cell system may be improved by impregnating therein a perfluoroamine. The amine may be primary, secondary or tertiary. Further, the amine is preferably water insoluble or only slightly water soluble. For example, the amine may be perfluorotriamylamine or perfluorotributylamine. Use of such a membrane system within a fuel cell may allow high or low temperature operation (i.e. at temperatures greater than 100° C. or less than 0° C.) as well as operation at low relative humidity.
    Type: Application
    Filed: August 28, 2002
    Publication date: March 4, 2004
    Applicant: Ballard Power Systems Inc.
    Inventors: David P. Wilkinson, Joy A. Roberts, Nengyou Jia, Eagranie Yuh, Shanna D. Knights, Jean St-Pierre
  • Patent number: 6608115
    Abstract: Polyvinyl chloride resin compositions and methods of preparation and use thereof for increasing the degree of whiteness in finished polyvinyl chloride foam. The resin compositions contain sulfur compounds selected from sulfonic acid derivatives, sulfinic acid derivatives, and mercapto acetic acid sodium salt, and optionally contain water soluble salts and/or t-butyl hydroperoxide.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: August 19, 2003
    Assignee: Occidental Chemical Corporation
    Inventors: Michael T. Moran, Thomas E. Moses, Sherry Rohn Clancy
  • Patent number: 6605649
    Abstract: Polyvinyl chloride resin compositions and methods of preparation and use thereof for increasing the degree of whiteness in finished polyvinyl chloride foam. The resin compositions contain sulfur compounds selected from sulfonic acid derivatives, sulfinic acid derivatives, and mercapto acetic acid sodium salt, and optionally contain water soluble salts and/or t-butyl hydroperoxide.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: August 12, 2003
    Assignee: Occidental Chemical Corporation
    Inventors: Michael T. Moran, Thomas E. Moses, Sherry Rohn Clancy
  • Publication number: 20030100620
    Abstract: Polyvinyl chloride resin compositions and methods of preparation and use thereof for increasing the degree of whiteness in finished polyvinyl chloride foam. The resin compositions contain sulfur compounds selected from sulfonic acid derivatives, sulfinic acid derivatives, and mercapto acetic acid sodium salt, and optionally contain water soluble salts and/or t-butyl hydroperoxide.
    Type: Application
    Filed: January 21, 2003
    Publication date: May 29, 2003
    Inventors: Michael T. Moran, Thomas E. Moses, Sherry Rohn Clancy
  • Patent number: 6500873
    Abstract: Polyvinyl chloride resin compositions and methods of preparation and use thereof for increasing the degree of whiteness in finished polyvinyl chloride foam. The resin compositions contain sulfur compounds selected from sulfonic acid derivatives, sulfinic acid derivatives, and mercapto acetic acid sodium salt, and optionally contain water soluble salts and/or t-butyl hydroperoxide.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: December 31, 2002
    Assignee: Occidental Chemical Corporation
    Inventors: Michael T. Moran, Thomas E. Moses, Sherry Rohn Clancy
  • Patent number: 6465535
    Abstract: The present invention provides a vibration reducing grip material that includes a closed-cell poly(vinyl chloride) foam material having a Shore durometer of about 50 to about 70. According to one embodiment of the present invention, there is provided a vibration reducing handle cover for an impact tool.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: October 15, 2002
    Assignee: Estwing Manufacturing Company
    Inventor: Daniel M. Eisman
  • Patent number: 6107356
    Abstract: Disclosed are polymeric foam structures suitable for absorbing and storing body fluids such as urine, menses and the like. These liquid storage structures are high suction collapsible polymeric foam materials. The collapsed foams, upon contact with aqueous fluids, can absorb and expand these fluids even when opposed by significant hydrostatic pressures. These absorbent polymeric foams comprise interconnected open-cells. In one aspect, the foams can absorb at least about 25 g/g against a hydrostatic head pressure of 50 cm. In another aspect, the foams of the present invention will have a vertical hang sorption height at 90% of at least about 60 cm.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: August 22, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Thomas Allen DesMarais
  • Patent number: 5872155
    Abstract: The present invention relates to vinyl chloride copolymers, in the latex form, the particles of which are composed of a core, of an outer layer and optionally of an intermediate layer. It also relates to the process for the manufacture of this latex by seeded miscosuspension polymerization and to its applications in paints and plastisols.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: February 16, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Philippe Espiard, Richard Peres, Benoit Ernst
  • Patent number: 5861442
    Abstract: Process of mixing a fugitive plasticizer, e.g., ethylene carbonate, with moist particulate polyacrylonitrile then removing the water enabling adjustment of the melt viscosity for extrusion of the polyacrylonitrile into film, fiber, pellets and shaped articles. Stretching and heating the extruded polyacrylonitrile film or fiber causes the fugitive plasticizer to exude and vaporize from the film or fiber, carrying with it any remaining acrylonitrile monomer. The resulting film or fiber exhibits substantially increased molecular weight, thus enhancing the tensile strength and barrier properties of the polyacrylonitrile product. The process also produces polyacrylonitrile foam products. A novel cross-linking agent for polyacrylonitrile, divinyloxybutane, is disclosed. Thermostabilizing agents for polyacrylonitrile, N-maleimides and stilbene derivatives, are also disclosed.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: January 19, 1999
    Assignee: Solcar Polymer, Limited Partnership
    Inventors: Edmund H. Merz, Roy A. White, John P. Fouser, Norman Fishman
  • Patent number: 5855287
    Abstract: A molded closure for a liquid container comprising a thermoplastic elastomer and a blowing agent. The molded closure is particularly suitable for use as a synthetic wine cork in a wine bottle. The molded closure does not permit passage of oxygen into the container, does not absorb oxygen from the contents of the container, can be removed from the container using a corkscrew without significant expansion, crumbling or disintegration, does not significantly taint a liquid in the container, permits the container to be placed horizontally immediately after insertion of the molded closure, and can permanently retain printed matter on its surface.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: January 5, 1999
    Assignee: Supreme Corq, Inc.
    Inventor: Dennis L. Burns
  • Patent number: 5756555
    Abstract: Plastisol compositions based on vinyl chloride/vinyl acetate copolymers produced by suspension polymerization have a low viscosity, even with low polymer-to-plasticizer ratios, so that they may be used for plastisol formulations suitable for airless spraying. The compositions are stable in storage and show good gelation properties. Coatings based on these plastisols have a good noise-damping effect, even with high vinyl acetate contents.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: May 26, 1998
    Assignee: Henkel Teroson GmbH
    Inventors: Karl Wesch, Klaus Ruch
  • Patent number: 5741824
    Abstract: The invention relates to acoustically active sprayable plastisol compositions based on styrene copolymers and/or alkyl methacrylate homopolymers and/or copolymers of methyl methacrylate which, in addition to the favorable abrasion properties and corrosion-preventing properties of the plastisols, have a good vibration-damping effect and distinctly reduce the noise caused by particle impact (chippings, water, sand).
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: April 21, 1998
    Assignee: Teroson GmbH
    Inventors: Gunter Butschbacher, Manfred Rein, Klaus Ruch, Karl Wesch
  • Patent number: 5692629
    Abstract: A molded closure for a liquid container comprising a thermoplastic elastomer and a blowing agent. The molded closure is particularly suitable for use as a synthetic wine cork in a wine bottle. The molded closure does not permit passage of oxygen into the container, does not absorb oxygen from the contents of the container, can be removed from the container using a corkscrew without significant expansion, crumbling or disintegration, does not significantly taint a liquid in the container, permits the container to be placed horizontally immediately after insertion of the molded closure, and can permanently retain printed matter on its surface.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: December 2, 1997
    Assignee: Supreme Corq
    Inventor: Dennis L. Burns
  • Patent number: 5677356
    Abstract: An expandable poly(vinyl chloride) resin composition for use in powder molding process containing a granular poly(vinyl chloride) resin, a fine-granular poly(vinyl chloride) resin, a plasticizer, a stabilizer, a foaming agent and an alkyl phosphate gives by a powder molding process an expansion-molded article having remarkably strengthened foamed cells and free from the occurrence of surface unevenness caused by polyurethane backing.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: October 14, 1997
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hikaru Shimizu, Toshio Igarashi, Akira Wakatsuki, Yoshihiro Nakatsuji, Yuu Shida
  • Patent number: 5589520
    Abstract: Process of mixing a fugitive plasticizer, e.g., ethylene carbonate, with moist particulate polyacrylonitrile then removing the water enabling adjustment of the melt viscosity for extrusion of the polyacrylonitrile into film, fiber, pellets and shaped articles. Stretching and heating the extruded polyacrylonitrile film or fiber causes the fugitive plasticizer to exude and vaporize from the film or fiber, carrying with it any remaining acrylonitrile monomer. The resulting film or fiber exhibits substantially increased molecular weight, thus enhancing the tensile strength and barrier properties of the polyacrylonitrile product. The process also produces polyacrylonitrile foam products. A novel cross-linking agent for polyacrylonitrile, divinyloxybutane, is disclosed. Thermostabilizing agents for polyacrylonitrile, N-maleimides and stilbene derivatives, are also disclosed.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: December 31, 1996
    Assignee: Solcas Polymer, Limited Partnership
    Inventors: Edmund H. Merz, Roy A. White, John P. Fouser, Norman Fishman
  • Patent number: 5552448
    Abstract: A plastic foam material composed of a blended resin composition which includes at least two thermoplastic resins and a silane-modified based resin. The blended resin composition consists essentially of 100 parts by weight of at least two thermoplastic resins, from about 1 to about 50 parts by weight of a silane-modified, cross-linked, thermoplastic resin; from about 0.001 to about 2.5 parts by weight of a cross-linking catalyst for use in a silane compound and from about 1 to about 20 parts by weight of a foaming agent. According to one embodiment of the present invention, the thermoplastic resins include at least two substantially incompatible and substantially uncross-linked thermoplastic resins, while in another embodiment the two thermoplastic resins need not be substantially incompatible. The blended resin composition may further include reinforcers such as glass fibers and filler. The thermodecomposition foaming agent decomposes at sufficiently high temperatures to yield a plastic foam material.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: September 3, 1996
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Tomoyuki Kobayashi, Kenji Miyazaki, Masanori Nakamura
  • Patent number: 5434205
    Abstract: A process for providing extrudable polyacrylonitrile compositions. Dry, particulate polyacrylonitrile having a moisture content of less than about 1.5 percent is mixed with a liquid plasticizer such as ethylene carbonate or propylene carbonate at a mixing temperature of about 140.degree. C. to about 180.degree. C. This process produces an extrudable polyacrylonitrileplasticizer composition which can be extruded to form film, fiber or other extruded or co-extruded products.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: July 18, 1995
    Assignee: Solcas Polymer Limited Partnership
    Inventor: Norman Fishman
  • Patent number: 5334622
    Abstract: An improved process for production and delivery of a plastisol foam is provided. By the process, plastisol foam is maintained under controlled pressures and conditioned to enhance homogeneity and percent foam. Also provided is a process for intermittently dispensing a fluid such as a plastisol foam, by which drip may be prevented. Additionally provided is novel apparatus for preventing drip.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: August 2, 1994
    Assignee: Rutland Plastic Technologies, Inc.
    Inventor: Robert C. Bergvist
  • Patent number: 5328937
    Abstract: A foam spacer which is usable as a cork substitute in the base cushion layer of a glass spacer. The spacer, which is adapted to replace natural cork spacers is preferably laminated to a tack layer or otherwise adhered to a surface. The spacer is formed from a plasticized foamable resin which includes a quantity of incorporated reinforcing agents.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: July 12, 1994
    Assignee: Gaska Tape, Inc.
    Inventor: Lawrence A. Cascino
  • Patent number: 5304590
    Abstract: Process of mixing a fugitive plasticizer, e.g., ethylene carbonate, with moist particulate polyacrylonitrile then removing the water enabling adjustment of the melt viscosity for extrusion of the polyacrylonitrile into film, fiber, pellets and shaped articles. Stretching and heating the extruded polyacrylonitrile film or fiber causes the fugitive plasticizer to exude and vaporize from the film or fiber, carrying with it any remaining acrylonitrile monomer. The resulting film or fiber exhibits substantially increased molecular weight, thus enhancing the tensile strength and barrier properties of the polyacrylonitrile product. The process also produces polyacrylonitrile foam products. A novel cross-linking agent for polyacrylonitrile, divinyloxybutane, is disclosed. Thermostabilizing agents for polyacrylonitrile, N-maleimides and stilbene derivatives, are also disclosed.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: April 19, 1994
    Assignee: Solcas Polymer, Inc.
    Inventors: Edmund H. Merz, Roy A. White, John P. Fouser, Norman Fishman
  • Patent number: 5300533
    Abstract: A method for production of a crosslinked, foamed vinyl chloride containing polymer, by adding a blowing agent to a copolymer produced by a copolymerisation of a monomer composition comprising vinyl chloride and glycidyl containing monomer, and optionally other monomers, foaming the copolymer, where the decomposition products of the blowing agent or decomposition products of reaction produces from the blowing agent, are chemically reactive with epoxy groups of the copolymer or its reaction products, and crosslinking the copolymer when the blowing agent or the reaction product of the blowing agent is decomposed.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: April 5, 1994
    Assignee: Norsk Hydro a.s.
    Inventors: Roger Dahl, Steinar Pedersen, Raymond Boreng
  • Patent number: 5262444
    Abstract: The invention relates to a breathable, plastic film, useful as a wall covering material. A low boiling additive, such as water, is added to a plastisol before extrusion. During extrusion and curing of the plastisol into a film or coating, the low boiling additive is volatilized and the resulting evolved gas perforates the forming film. In this manner a permeable plastic film, such as vinyl, is produced.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: November 16, 1993
    Assignee: Borden, Inc.
    Inventors: George Rusincovitch, Paul J. Roe, Richard C. Andrews
  • Patent number: 5252623
    Abstract: An expandable vinyl chloride resin composition comprising, as main components, a vinyl chloride polymer composed mainly of vinyl chloride obtained by emulsion polymerization or fine suspension polymerization of a vinyl chloride monomer and a vinyl comonomer having a hydroxyl group or a carboxyl group, a plasticizer, a chemical blowing agent and a crosslinking agent, wherein said crosslinking agent is:(1) a combination of an alkylphenol-blocked polyisocyanate and an .epsilon.-caprolactam-blocked polyisocyanate, or(2) a polyisocyanate randomly blocked by an alkyl phenol and .epsilon.-caprolactam.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: October 12, 1993
    Assignees: Mitsubishi Kasei Vinyl Company, Mitsubishi Kasei Corporation
    Inventors: Satoru Sugino, Hisaharu Hotta
  • Patent number: 5229428
    Abstract: The present invention provides a method of lining a plastic closure top with a thermoplastic, non-cross linked curable, vinyl chloride copolymer plastisol composition that is plasticized with an effective low temperature fusing amount of (A) an epoxidized natural oil, (B) an organic diglycidyl ether and (C) a curing agent for the diglycidyl ether, the plastisol being stable with a shelf life of at least about four months, the method including heating, without preheating, the lining and the closure top at a temperature not over about 300.degree. F. for about 90 to 120 seconds using convection heating without pressure and without conductive heating, to fuse the composition and thereafter solidifying the fused composition and thereafter cure the composition to provide the lining with tensile and elongation measurements sufficient for a stable closure assembly.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: July 20, 1993
    Assignee: Owens-Illinois Closure Inc.
    Inventor: John W. Bayer
  • Patent number: 5162380
    Abstract: Foamed articles of polyvinyl chloride resins are prepared by mixing an organic foaming agent having a temperature of foaming by decomposition of 100.degree. C. or above and a plasticizer with a polyvinyl chloride resin containing epoxy group which is formed into particles having an average diameter in the range from 0.05 to 5 .mu.m and has a concentration of the epoxy group at the surface of the particle of 1.times.10.sup.-2 weight % or more and a concentration of the total epoxy group in the particles of the said resin of 10 weight % or less at a temperature where the organic foaming agent does not decompose and coating or molding the mixed compound with foaming by heating.Foamed articles of polyvinyl chloride resins having excellent physical properties and high expansion ratios can be prepared without utilizing a crosslinking agent at the ambient pressure.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: November 10, 1992
    Assignee: Nippon Zeon Company Limited
    Inventors: Toshihiko Hori, Kazunori Ueki
  • Patent number: 5140053
    Abstract: A foamable polymer composition comprising[A] at least one cyclo-olefin resin selected from the group consisting of(A-1) ring-opened polymers derived from cyclo-olefins represented by the following general formula [I],(A-2) ring-opened copolymers derived from the cyclo-olefins of general formula [I],(A-3) hydrogenation products of the ring-opened polymers (A-1),(A-4) hydrogenation products of the ring-opened copolyers (A-2), and(A-5) addition polymers of the cycloolefins of general formula [I] with ethylene, and[B] a blowing agent, ##STR1## wherein n is 0 or a positive integer; R.sup.1 to R.sup.12, independently from each other, represent an atom or a group selected from the class consisting of a hydrogen atom, halogen atoms and hydrocarbon groups; R.sup.9 to R.sup.12 may be linked to each other to form a monocyclic or polycyclic hydrocarbon group; and R.sup.9 and R.sup.10, or R.sup.11 and R.sup.12 may each form an alkylidene group.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: August 18, 1992
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Yohzoh Yamamoto, Takasi Nakagawa
  • Patent number: 5137926
    Abstract: Polyaromatic fibers or microbeads which are swollen with solvent and crosslinked while swollen in such a way that the expanded, or macronet, structure of the swollen fiber or microbead is stabilized and retained even after drying exhibit high surface area and significant adsorptive capacity.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: August 11, 1992
    Assignee: Rohm and Haas Company
    Inventors: Stephen G. Maroldo, Richard M. Kopchik, Eric J. Langenmayr
  • Patent number: 5107068
    Abstract: The present invention relates to a novel polyurethane resin, a foam prepared from the resin, a preparation process of the foam, and preparation process of a rigid polyurethane foam composite having a face material. The primary object of the present invention is to provide a rigid polyurethane foam and a rigid polyurethane foam composite fitted with a face material which are prepared by using a hydrochlorofluorocarbon foaming agent having very low public hazards such as ozone layer destruction and green house phenomenon of the earth.The above object can be achieved by using a combination of a polyether polyol initiated from a phenol resin with an alkanolamine or an aliphatic polyhydroxy compound in the production of rigid polyurethane foams.Foams thus obtained have equivalent properties to those of foams obtained by using chlorofluorocarbons (CFC) which are conventional foaming agents.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: April 21, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Satoshi Ozaki, Tsukuru Izukawa, Haruhiko Kawakami, Takayoshi Masuda, Seiji Esaki, Masayuki Kimura, Toshio Nozawa
  • Patent number: 5049590
    Abstract: A process in which a blowing agent dispersion medium is used for producing poly(vinyl chloride) that is particularly well suited for use in insulation covers and the insulation covers made from the resultant poly(vinyl chloride).
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: September 17, 1991
    Assignee: Carol Botsolas
    Inventors: Christos J. Botsolas, Terry C. Hayward