Clay Pretreatment Patents (Class 501/145)
  • Patent number: 10414914
    Abstract: This invention relates to the preparation of a dynamically vulcanized alloy comprising at least one elastomer, at least one thermoplastic resin, a nanofiller, and an ethylene copolymer resin.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 17, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria D. Ellul, Rodney May, Jr.
  • Patent number: 9443645
    Abstract: An insulated wire for vehicle use includes a conductor and an insulating layer disposed on an outer circumference of the conductor. The insulating layer comprises a halogen-free flame retardant cross-linkable resin composition containing a base polymer, and a silane coupling agent and a metal hydroxide which are added to the base polymer. The base polymer includes, as major components, (a) an ethylene-vinyl acetate copolymer (EVA) and (b) an acid-modified olefin resin having a Tg of ?55° C. or lower at a ratio (a):(b) of 70:30 to 100:0 and has an acetic acid content (VA) of 50% to 70% by mass. The silane-coupling agent is added in an amount of 1 to 5 parts by mass and the metal hydroxide is added in an amount of 100 to 250 parts by mass relative to 100 parts by mass of the base polymer.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: September 13, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Iwasaki, Kentaro Segawa, Hitoshi Kimura
  • Patent number: 9409211
    Abstract: The present subject matter provides colored wear tiles for use in optical sorting apparatuses and related methods that separate an associated material into a desired product and an undesired product. The colored wear tiles have a color and/or lightness value that permeates the entire body of the wear tile and sufficiently differs from the color and/or lightness of the associated material in order to allow the colored wear tile, or portions or pieces thereof, that may mix with the associated material, to be separated from the desired product by the sorting apparatus.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: August 9, 2016
    Assignee: CERCO LLC
    Inventor: Gary C. Troyer
  • Patent number: 9406414
    Abstract: An insulated wire for vehicle use includes a conductor and an insulating layer disposed on an outer circumference of the conductor. The insulating layer comprises a halogen-free flame retardant cross-linkable resin composition containing a base polymer, and a silane coupling agent and a metal hydroxide which are added to the base polymer. The base polymer includes, as major components, (a) an ethylene-vinyl acetate copolymer (EVA) and (b) an acid-modified olefin resin having a Tg of ?55° C. or lower at a ratio (a):(b) of 70:30 to 100:0 and has an acetic acid content (VA) of 50% to 70% by mass. The silane-coupling agent is added in an amount of 1 to 5 parts by mass and the metal hydroxide is added in an amount of 100 to 250 parts by mass relative to 100 parts by mass of the base polymer.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: August 2, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Iwasaki, Kentaro Segawa, Hitoshi Kimura
  • Patent number: 9403194
    Abstract: The present subject matter provides colored wear tiles for use in optical sorting apparatuses and related methods that separate an associated material into a desired product and an undesired product. The colored wear tiles have a color and/or lightness value that permeates the entire body of the wear tile and sufficiently differs from the color and/or lightness of the associated material in order to allow the colored wear tile, or portions or pieces thereof, that may mix with the associated material, to be separated from the desired product by the sorting apparatus.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: August 2, 2016
    Assignee: CERCO LLC
    Inventor: Gary C. Troyer
  • Patent number: 8921250
    Abstract: A method of making disposable adobe dinnerware articles includes providing extracted clay with inclusions removed, preparing the clay to a predetermined consistency, and combining the clay with a filler to create an adobe mixture. The method can also include adding an additive, testing the humidity level of the adobe mixture and adjusting the humidity of the adobe mixture when the humidity is not within a predetermined humidity range, and preheating a mold. The method can also include adding the adobe mixture to the mold, and pressing the adobe mixture in the mold and heating the mold in a series of production stages to form a molded adobe tableware product.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: December 30, 2014
    Assignee: OAK Novations, Ltd.
    Inventor: Vadim Chindyasov
  • Patent number: 8911865
    Abstract: A fully calcined kaolin pigment extender is provided which has a product Mullite Index (M.I.) of 25.0 or higher. The calcined kaolin pigment extender can be advantageously used in paints to improve scrub and burnish resistance.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 16, 2014
    Assignee: BASF Corporation
    Inventors: Ashok Khokhani, Kenneth W. Folmar
  • Patent number: 8252107
    Abstract: A system and method for treating tailings from a bitumen froth treatment process such as TSRU tailings. The tailings are dewatered and then combusted to convert kaolin in the tailings into metakaolin. Calcined fines and heavy minerals may be recovered from the combustion products, namely from the flue gas and bottom ash.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: August 28, 2012
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Payman Esmaeili, Mainak Ghosh, Brian C. Speirs
  • Patent number: 8221661
    Abstract: The invention relates to the building material industry and to the use of labor saving tools of industrial continuous and batch brick kilns. Said invention makes it possible to develop a process for producing large-sized clay ceramic products consisting in carrying out rapid and high-quality baking and to accelerate a construction process. The inventive method for producing a clay house or another clay construction consists in forming, during construction, through and blind voids in a wall and a ceiling in such a way that they are closed with a noncombustible material from outside, in covering window and door apertures in the ready clay construction with a noncombustible material, and in baking the construction to a ceramic state in such a way that hot gas penetrates into the voids and that the body of the product is uniformly heated. During baking the construction is used in the form of a furnace (combustion chamber).
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: July 17, 2012
    Inventor: Konstantin Igorevich Mechkovsky
  • Patent number: 8039526
    Abstract: A method for preparing a nanoclay-filled thermoplastic vulcanizate, the method comprising introducing an olefinic thermoplastic vulcanizate, a functionalized thermoplastic resin, and a surface-modified nanoclay, where the blending takes place at a temperature above the melt temperature of the thermoplastic vulcanizate but below the temperature at which the surface-modified nanoclay degrades.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: October 18, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria Dolores Ellul, Paul Edward McDaniel, Thomas Gregory Lengyel
  • Patent number: 7919185
    Abstract: Polymer composites and polymer nanocomposites are designed and manufactured by choosing surface-modified fillers having a solid surface energy matching the solid surface energy of the polymer, wherein the advancing contact angle of the polymer on the surface-modified filler is less than about 5 degrees. The fillers are surface-modified by adsorption of amorphous polymeric surfactants, consisting of either mono-modal, bimodal, or multi-modal size distribution. The surface-modified fillers of this invention display a measurable yield stress and a viscosity of about 30.000 Pa·s or less at room temperature, and comprise one or more materials selected from the group consisting of minerals, plant material, animal material, carbon fiber, graphite, amorphous carbon, carbon nanotubes, and glass fiber.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: April 5, 2011
    Inventor: David J. Chaiko
  • Publication number: 20110001078
    Abstract: Disclosed herein are methods for removing discoloring impurities, such as carbon impurities, particularly graphite, from kaolin clay to enhance the brightness of the kaolin clays. The methods include reverse flotation processes. Also disclosed herein are high brightness kaolin products, and the uses thereof.
    Type: Application
    Filed: March 6, 2009
    Publication date: January 6, 2011
    Applicant: Imerys Pigments, Inc.
    Inventors: Ismail Yildirim, Mikel Dean Smith, Robert Pruett
  • Publication number: 20100227755
    Abstract: A method of evaluating kneaded clay includes, preparing kneaded clay by mixing and kneading at least ceramic raw material and water as contained materials, measuring T1 relaxation time and/or T2 relaxation time of proton contained in the contained materials by NMR method, and evaluating a kneaded state of the kneaded clay. There is further provided a method for manufacturing kneaded clay, wherein the kneaded clay is kneaded by using the method for evaluating kneaded clay while checking the kneaded state.
    Type: Application
    Filed: February 17, 2010
    Publication date: September 9, 2010
    Applicant: NGK Insulators, Ltd.
    Inventor: Takao SAITO
  • Patent number: 7628850
    Abstract: A process for producing high grade metakaolin directly from kaolinzed sands ore body. In one embodiment, a source of kaolin ore is reduced in the size to a size distribution of between ?2 inches and 10 mesh. The ore is then dried in a dryer at a temperature of not greater than 180° C. to a moisture content of not greater than 0.5% by weight to liberate kaolin and calcined at a temperature of not greater than 875° C. to produce metakaolin.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: December 8, 2009
    Assignee: Whitemud Resources Inc.
    Inventors: Robin Phinney, Kelly Graham, Kevin Graham, Burl Aycock
  • Patent number: 7619024
    Abstract: A resin composition comprising melt blending a polyamide resin such as nylon MXD6 with a polyphenoxy resin. The polyamide resin and the polyphenoxy resin may be combined prior to or after melting and can be sandwiched between two PET layers in a perform mold to form an article capable of blow molding to form a container with improved delamination resistance. Also, intercalated layered materials are prepared by co-intercalation of an onium ion, an aromatic polyamide oligomer or polymer, e.g., nylon MXD6, and a polyphenoxy oligomer or polymer between the planar layers of a swellable layered material, such as a phyllosilicate, preferably a smectite clay. The co-intercalated layered materials are combined with the aromatic polyamide and polyphenoxy resin to form a nanocomposite composition for sandwiching between PET layers to form containers having improved delamination resistance.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: November 17, 2009
    Assignees: Amcol International Corporation, Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kazunobu Maruo, Tomomichi Kanda, Jun Mitadera, Ying Liang, Tie Lan
  • Patent number: 7595359
    Abstract: The instant invention relates to cationic alkoxyamines, which are useful as polymerization initiators/regulators in a controlled stable free radical polymerization process to produce intercalated and/or exfoliated nanoparticles from natural or synthetic clays. The invention also relates to improved nanocomposites produced by this process and to the use of these nanocomposite compositions as, for example, coatings, sealants, caulks, adhesives and as plastic additives.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: September 29, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Andreas Mühlebach, Peter Nesvadba, Andreas Kramer
  • Patent number: 7534736
    Abstract: Disclosed herein is ultra-low residue, high solids, wet “cake” kaolin and ultra-low residue, high solids, wet “cake” calcined kaolin products, produced by use of wet screening/non-drying product isolation, which are useful in the manufacture of top size-sensitive applications.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: May 19, 2009
    Assignee: Imerys Kaolin, Inc.
    Inventors: Edward Sare, James Stacey Johnson
  • Patent number: 7514490
    Abstract: The invention relates to a nanocomposite material on the basis of a clay having a layered or fibrous structure and a cation exchange capacity of from 5 to 250 milliequivalents per 100 gram, a polymeric matrix and a block copolymer or graft copolymer, which block copolymer or graft copolymer includes one or more first structural units (A), which are compatible with the clay, and one or more second structural units (B), which are compatible with the polymeric matrix. Methods of making and using the same are also disclosed.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: April 7, 2009
    Assignee: Nederlandse Oganisatie Voor Toegepastnatuurwetenschappelijk Onderzoek TNO
    Inventor: Hartmut Rudolf Fischer
  • Patent number: 7495051
    Abstract: A composition comprising exfoliated silicate platelets; a thermoplastic polymer; and a block copolymer and method of making the same.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: February 24, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: James M. Nelson, Ryan E. Marx, John W. Longabach, Kenneth J. Hanley, Mark E. Napierala, Terri A. Shefelbine, Myles L. Brostrom, Jeffrey J. Cernohous
  • Patent number: 7473729
    Abstract: Barrier coating mixtures contain in a carrier liquid, (a) a non-elastomeric substantially polymerized acrylic polymer; (b) an exfoliated layered platelet-like silicate filler which has been acid treated and having an aspect ratio greater than 25; and (c) at least one additive, wherein the total solids content is less than 30% and the amount of filler is between 5% to about 60% of the total solids content. Coated articles and containers, freestanding films and packaging films are produced using the barrier coating mixtures. Methods of manufacturing such coated products and coating mixtures are also encompassed.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: January 6, 2009
    Assignee: InMat Inc.
    Inventors: Carrie A. Feeney, Harris A. Goldberg, Michele Farrell, Douglas P. Karim
  • Publication number: 20080207431
    Abstract: A method of improving the manufacture of structural clay products through the addition of starches is disclosed herein. The method includes adding a starch material to a mixture of basic raw material wherein the starch material is selected from the group consisting of pre-gelatinized starch, modified starch, or combinations thereof. The method includes adding, 1.0% or less by weight, the starch material prior to shaping the structural clay product.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 28, 2008
    Inventors: Glen Thomas Townley, Jesse Daniel Bennett
  • Patent number: 7407999
    Abstract: The present invention is a blend of a thermoplastic engineering resin and an interpolymer of, on one embodiment, a C4 to C7 isomonoolefin, a para-methylstyrene and a para-(halomethylstyrene), the interpolymer having been pre-mixed with an exfoliated-clay, the entire blend forming a nanocomposite. The resin may or may not have a clay present prior to blending with the interpolymer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an air barrier.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: August 5, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Andy Haishung Tsou, Anthony Jay Dias
  • Patent number: 7378466
    Abstract: Concentrated suspensions of smectite clays are obtained as either relatively “thin” or highly shear-thinning slurries that are easy to pump, by adding one or more of certain cationic polymers whose weight average molecular weight, Mw, is 50,000 or higher. It was found during the course of the invention that a cationic polymer with an Mw of 10,000 did not work, while the same polymer with a bimodal Mw of 50,000 and 30,000 worked satisfactorily. To achieve the full advantage of the present invention, the cationic polymer preferably has 1 to 10 milliequivalents of cationic charge per gram of the polymer, and more preferably 5 to 10 milliequivalents of cationic charge per gram of the polymer, and most preferably 6 to 8 milliequivalents of cationic charge per gram of the polymer.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: May 27, 2008
    Assignee: AMCOL International Corp.
    Inventors: Ashoke K. SenGupta, Jerald W. Darlington, Jr., Jennifer Gould, Iiona Lin
  • Patent number: 7329702
    Abstract: A composition comprising a fluorinated block copolymer and at least one of an intercalated layered silicate or exfoliated silicate platelets, and methods of making the same.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: February 12, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: James M. Nelson, Ryan E. Marx, John W. Longabach, Kenneth J. Hanley, Terri A. Shefelbine, Myles L. Brostrom, Jeffrey J. Cernohous
  • Patent number: 7273899
    Abstract: The present invention relates to a splayed material comprising a layered material splayed with a particle having a diameter equal to or less than 3 micrometers. Another embodiment of the invention includes an article comprising a matrix and a layered material splayed with a polymeric particles dispersed in a medium. The invention also relates to methods for preparing these materials via mixing, milling and emulsifying a solvent borne polymer with a surfactant. A further method describes a method for preparing a nanocomposite from a splayant particle prepared by combining an emulsion polymerization monomer and a surfactant dispersible in a medium wherein the monomer is not dispersible in the medium.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 25, 2007
    Assignee: Eastman Kodak Company
    Inventors: Jin-Shan Wang, Xiaoru Wang, Samuel Chen, Thomas N. Blanton
  • Patent number: 7214734
    Abstract: The present invention provides barrier films having reduced gas permeability for use in packaging and coating applications. The barrier films comprise an anisotropic liquid crystalline composite layer formed from phyllosilicate-polymer compositions. Phyllosilicate-polymer liquid crystalline compositions of the present invention can contain a high percentage of phyllosilicate while remaining transparent. Because of the ordering of the particles in the liquid crystalline composite, barrier films comprising liquid crystalline composites are particularly useful as barriers to gas transport.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: May 8, 2007
    Assignee: UChicago Argonne, LLC
    Inventor: David J. Chaiko
  • Patent number: 7214264
    Abstract: The present invention relates to a hydrous kaolin product having improved optical properties, for example, when used in the production of paper products. The present invention comprises an improved barrier coating for paper and a method of making the coated paper. The present invention also comprises an improved method from making filled and coated paper products. The present invention uses a composition comprising kaolin having a shape factor of at least about 70:1, such as at least about 80:1 or at least about 100:1.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: May 8, 2007
    Assignee: Imerys Pigments, Inc.
    Inventors: J. Philip E. Jones, Robert J. Pruett, Jun Yuan, Michael J. Garska, David O. Cummings, Bomi M. Bilimoria, Robin Wesley
  • Patent number: 7196131
    Abstract: The invention relates to polymer modified inorganic particles with a layer structure with an average particle diameter of 5 nm to 20,000 nm, containing 20 to 5000 mass % interlamellarly, in relation to the anhydrous inorganic particle, of a mixture of aminoplasts and water. These polymer modified inorganic particles are produced by swelling the inorganic particles with aldehydes and then reacting the inorganic particles with multifunctional C1–C30 amino compounds. The invention also relates to plastic containing polymer modified particles with a layer structure and to semi-finished products and moulded material produced from the same.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: March 27, 2007
    Assignee: Agrolinz Melamin GmbH
    Inventors: Manfred Rätzsch, René Dicke, Markus Machherndl, Gerd Granner
  • Patent number: 7157516
    Abstract: The present invention relates to methods for the preparation of clay/polymer nanocomposites. The methods include combining an organophilic clay and a polymer to form a nanocomposite, wherein the organophilic clay and the polymer each have a peak recrystallization temperature, and wherein the organophilic clay peak recrystallization temperature sufficiently matches the polymer peak recrystallization temperature such that the nanocomposite formed has less permeability to a gas than the polymer. Such nanocomposites exhibit 2, 5, 10, or even 100 fold or greater reductions in permeability to, e.g., oxygen, carbon dioxide, or both compared to the polymer.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: January 2, 2007
    Assignee: UChicago Argonne, LLC
    Inventor: David J. Chaiko
  • Patent number: 7119134
    Abstract: A method of making a polymeric compound with nanofiller of a predetermined grade. The method includes the steps of providing a base grade of the polymeric material, and mixing a nanofiller concentrate material with the base grade polymeric material in a ratio sufficient to render the predetermined grade of filled polymeric compound, the ratio being nanofiller concentrate material to base grade polymeric material. A method for making the nanofiller concentrate material includes the steps of mixing a high flow carrier resin and a nanofiller to form a mixture, extruding the mixture, and pelletizing the extruded mixture. The mixture may advantageously include colorants, such as pigments or dyes.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: October 10, 2006
    Assignee: General Motors Corporation
    Inventors: David Bruce Reed, Robert A. Ottaviani
  • Patent number: 7109257
    Abstract: Processes for modifying the surface chemistry of a clay are disclosed. In one embodiment, there is provided a process for modifying the surface chemistry of a clay, wherein the process comprises: providing a clay dispersion comprising at least one unmodified clay wherein said clay has a first exchangeable cation; adding a second cation to the clay dispersion, wherein at least a portion of the second cation exchanges with at least a portion of the first cation to form a modified clay dispersion; and combining at least one polar containing agent with the modified clay dispersion to provide a modified clay.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 19, 2006
    Assignee: Rohm and Haas Company
    Inventors: Dennis Paul Lorah, Robert Victor Slone, George Max Lein
  • Patent number: 7091263
    Abstract: The invention provides nanocomposites comprising a clay and an organic compound, in which the clay is a clay bridged by a metal compound, preferably iron oxide and/or aluminum oxide. The organic compound is preferably a polymer. The clay-based nanocomposites of the invention have good mechanical properties and good heat resistance. The invention also provides cables comprising such a nanocomposite, preferably in their sheath or outer coating. Finally, the invention provides a process for producing said nanocomposite.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: August 15, 2006
    Assignee: Nexans
    Inventors: Lionel Fomperie, Pascal Amigouet, Faïza Bergaya, Tushar Mandalia
  • Patent number: 7081491
    Abstract: A method for fabricating a polybenzoxazole/clay nanocomposite material includes performing an ion exchange reaction between an organic amine and Na+-montmorillonite to form a swelled organoclay. A polycondensation reaction is conducted between two types of monomers, isophthaloyl chloride and 2,2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane to form a polybenzoxaxole precursor polyhydroxyamide to form a PBO/clay composite material.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: July 25, 2006
    Assignee: National Cheng-Kung University
    Inventors: Steve Lien-Chung Hsu, Keng-Chuan Chang
  • Patent number: 7071247
    Abstract: The invention relates to a porous mold for use in a pressure casting process, which mold is manufactured of a polymeric material forming a matrix into which a clay and a block copolymer or a graft copolymer have been incorporated, wherein the block copolymer or graft copolymer comprises one or more first structural units (A), which are compatible with the clay, and one or more second structural units (B), which are compatible with the polymeric matrix. The invention further relates to a process for producing said mold and to the use of said mold in a pressure casting process.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: July 4, 2006
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
    Inventors: Hartmut Rudolf Fischer, Lawrence Fabian Batenburg, Leonardus Johannus Maria Dortmans
  • Patent number: 6979410
    Abstract: Provided are a piezoelectric ceramic and a piezoelectric device having a larger piezoelectric strain constant and capable of being fired at a lower temperature. A main component of PbA[(Mg1/3Nb2/3)a(Zn1/3Nb2/3)bTicZrd]O3 (a+b+c+d=1, 0.99?A?1.01, 0.15?a+b?0.5, 0.05?b?0.25, 0.2?c?0.5, 0.15?d?0.6) and 0.01 mass % to 0.8 mass % inclusive of at least one kind selected from the group consisting of Fe, Co, Ni and Cu in the form of oxide per 1 mol of the main component as a first sub-component are comprised. Thereby, a larger piezoelectric strain constant can be obtained, and a firing temperature can be reduced. In the main component, a part of Pb may be replaced with at least one kind selected from the group consisting of Ca, Sr and Ba. Further, as a second sub-component, 0.05 mass % to 1.0 mass % inclusive of at least one kind selected from the group consisting of Sb, Nb and Ta in the form of oxide per 1 mol of the main component may be comprised.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: December 27, 2005
    Assignee: TDK Corporation
    Inventor: Satoshi Sasaki
  • Patent number: 6924334
    Abstract: It is an object of the present invention to provide a polyolefin resin composition excellent in flame retardancy, in particular capable of manifesting excellent flame retardancy owing to a shape retaining effect upon combustion, and excellent also in mechanical strength and thermal characteristics, a thermoplastic resin for cable jacketing or sheathing which comprises the above resin composition, and an insulated cable. The present invention relates to a polyolefin resin composition comprising 100 parts by weight of a polyolefin resin and 0.1 to 100 parts by weight of a layered silicate, wherein a combustion residue thereof obtained by combusting said polyolefin resin composition by heating for 30 minutes under heating condition of 50 kW/m2 shows a yield point stress of not less than 4.9×103 Pa when compressed at a rate of 0.1 cm/s.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: August 2, 2005
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Juichi Fukatani, Koichi Shibayama, Koji Taniguchi, Hideyuki Takahashi, Akihiko Bando, Koichiro Iwasa, Naoki Ueda
  • Patent number: 6887931
    Abstract: This invention relates to thermosetting inorganic clay nanodispersions comprising an inorganic clay treated in situ with an intercalation agent and a non-aqueous, chemically reactive, organic intercalation facilitating agent, wherein the amount of intercalation facilitating agent is sufficient to facilitate intercalation and to disperse said inorganic clay. The thermosetting inorganic clay nanodispersions comprise an inorganic clay dispersed in an intercalating agent and an intercalation facilitating agent. Thermosetting inorganic clay nanodispersions are used to prepare thermosetting nanocomposite articles.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: May 3, 2005
    Assignee: Ashland Inc.
    Inventors: Helena Twardowska, Laurence G. Dammann
  • Patent number: 6884834
    Abstract: A method for modifying a high-density polyethylene (HDPE)-clay nanocomposite is disclosed. The method comprises shearing a melt of the nanocomposite at an effective shear rate. The modified nanocomposite shows significantly increased complex melt viscosity, storage modulus, and loss modulus.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: April 26, 2005
    Assignee: Equistar Chemicals, LP
    Inventors: Mark K. Reinking, Karl P. Rufener
  • Patent number: 6872677
    Abstract: A brick additive and methods for using the brick additive are disclosed. The additive may include an internal porosity. The internal porosity may display an intra-granular internal porosity in which at least some of the pores are interconnected via an open network of pore spaces. In some embodiments, the additive is capable of maintaining its internal porosity after undergoing thermal modification via calcination, for example. In addition, brick additives of the present invention may display a large surface area.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: March 29, 2005
    Assignee: Oil Dri Corporation
    Inventors: Verlyn R. Roskam, Marc A. Herpfer, Allan S. Lee
  • Patent number: 6861462
    Abstract: This invention relates to preparation and use of nanocomposites formed in situ within an elastomer host wherein the nanocomposite is comprised of an elastomer matrix and a dispersion therein of at least partially exfoliated clay platelets. Rubber composites can be prepared by blending such nanocomposite with additional elastomer(s), additional reinforcing filler(s) and/or a coupling agent. The invention further relates to the preparation of articles of manufacture, including tires, having at least one component comprised of said nanocomposite or said rubber composite. Such a tire component may be selected from, for example, tire tread and tire innerliner.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: March 1, 2005
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Dane Kenton Parker, Brent Kevin Larson, Xiaoping Yang
  • Patent number: 6849680
    Abstract: Nanocomposites may be produced by mixing dispersions of polymers and dispersions of clay minerals. After mixing, the dispersions may be destabilized with the addition of appropriate compounds. The flocculated solid material exhibits characteristics of a nanocomposite, such as exfoliation of the clay mineral platelets as indicated by x-ray diffraction analysis.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: February 1, 2005
    Assignee: Southern Clay Products, Inc.
    Inventors: Milburn I. Knudson, Jr., Clois E. Powell
  • Patent number: 6841607
    Abstract: This invention relates to thermosetting inorganic clay nanodispersions comprising an inorganic clay and at least one organometallic compound. The thermosetting inorganic clay nanodispersions are used to prepare thermosetting articles.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: January 11, 2005
    Assignee: Ashland Inc.
    Inventors: Helena Twardowska-Baxter, Rina Singh, Laurence G. Dammann
  • Patent number: 6838508
    Abstract: A polyolefin-based nanocomposite and a method of preparing the same are disclosed. The polyolefin-based nanocomposite is prepared by melt kneading a mixture including (A) 40-99.8% by weight of a matrix polymer of polyolefin; (B) 0.1-30% by weight of a polyolefin compatilizer containing polar reactive groups; and (C) 0.1-30% by weight of a layered clay material having a quaternary ammonium ion bonded to the surface thereof. The quaternary ammonium ion contains (I) at least one alkyl group having at least 15 carbon atoms; and (ii) a substitutent having —Si—O—Si—linkage and at least one terminal reactive group.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: January 4, 2005
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Siao Hsiao, Gwo-Yang Chang, Shyh-Yang Lee, Sung-Jeng Jong
  • Patent number: 6828370
    Abstract: The invetion is directed to a polymer-clay nanocomposite material comprising a melt-processible matrix oplymer and a layered clay material having decreased levels of extractable material, such as extractible salts of organic cations. This invention is also derected to processes for preparing polymer-clay nanocomposites, intercalates, exfoliates, and articles or products produced from nanocomposite materials.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: December 7, 2004
    Assignee: AMCOL International Corporation
    Inventors: Tie Lan, Vasiliki Psihogios, Shriram Bagrodia, Louis Thomas Germinario, John Walker Gilmer
  • Patent number: 6828367
    Abstract: Co-Ion exchange of the interlayer cations of a layered silicate with a mono-protonated aromatic diamine and an alkyl ammonium ion into the silicate galleries. The presence of the alkyl ammonium ion provides low oligomer melt viscosity during processing. The presence of the diamine allows chemical reaction between the silicate surface modification and the monomers. This reaction strengthens the polymer silicate interface, and ensures irreversible separation of the individual silicate layers. Improved polymer thermal oxidative stability and mechanical properties are obtained.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: December 7, 2004
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventor: Sandi G. Campbell
  • Patent number: 6822035
    Abstract: A method for preparing organoclays for use as rheological control agents and in the preparation of nanocomposites. Typically, the clay is dispersed in water, and a specific amount of polymeric hydrotrope, ranging from 0.1 to 15 weight percent relative to the weight of the clay, is adsorbed onto the clay surface. Quaternary amine exchange is also performed on the clay to modify the surface hydrophilic/lipophilic balance (HLB) of the clay.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: November 23, 2004
    Assignee: The University of Chicago
    Inventor: David J. Chaiko
  • Patent number: 6811602
    Abstract: A process for preparing a silicate porous product, which comprises a step of forming a clay mineral into a dispersion by means of a dispersant, a step of removing gases dissolved in the dispersion, a step of freezing the dispersion and drying it in its frozen state under reduced pressure, and a step of firing the dried product obtained by the drying.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: November 2, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshihisa Beppu, Shinji Kondoh
  • Patent number: 6787592
    Abstract: Organoclays based on specific types of ester quats are found to be remarkably effective for use in preparing nanocomposites. These organoclays comprise the reaction product of a smectite clay and a quaternary ammonium compound (or “quat”) which comprises two esterified radicals hereinafter called a “diester quat”). The diester quat may be present in admixture with further quaternary ammonium compounds having esterified radicals, especially compounds having three esterified radicals (hereinafter “triester quats”); or compounds having a single esterified radical (hereinafter “monoester quats”). Where such a mixture of quats is used, the reaction is between the smectite clay and the quat mixture.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: September 7, 2004
    Assignee: Southern Clay Products, Inc.
    Inventors: Clois E. Powell, James F. Gadberry, Michael Hoey
  • Patent number: 6770696
    Abstract: Disclosed is a method for preparing a clay-dispersed polymer nanocomposite. In this method, a polymer, which carries oxygen atoms within the repeating units of its backbone and is thermodynamically compatible with a binder resin, is used as a matrix resin. Useful is poly(&egr;-caprolactone) owing to its thermodynamic compatibility with poly(styrene-co-acrylonitrile)copolymers, poly(acrylonitrile-co-butadiene-co-styrene) copolymers, and poly(vinylchloride) resins. Poly(&egr;-caprolactone) resins aid the binder resins to penetrate into silicate layers so that the silicate of the organophilic clay was completely delaminated to silicate lamellas.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: August 3, 2004
    Assignee: Korea Institute of Science and Technology
    Inventors: Moon Bae Ko, Bum Suk Jung, Won Ho Jo, Seong Woo Kim, Moo Sung Lee, Jun Kyung Kim, Soon Ho Lim, Chul Rim Choe, Min Park
  • Patent number: 6765049
    Abstract: The present invention is directed to, in part, polymer clay nanocomposites having an acid containing monomer and clay. In one embodiment, there is provided a process for preparing an aqueous polymer clay nanocomposite dispersion, wherein the process comprises: providing an aqueous dispersion comprising at least one clay, optionally at least one ethylenically unsaturated monomer, and optionally at least one surfactant; providing a monomer mixture comprising at least 10% by weight of an acid containing monomer within the monomer mixture and optionally a surfactant; mixing the aqueous dispersion and the monomer mixture; and polymerizing the monomer to form the nanocomposite dispersion wherein the clay is at least partially exfoliated within the nanocomposite dispersion. The present invention also relates to the use of these compositions such as thickeners, dispersants, plastics additives, adhesives, coatings, flexographic inks, overprint varnishes, and dry cement powder modifiers.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: July 20, 2004
    Assignee: Rohm and Haas Company
    Inventors: Dennis Paul Lorah, Robert Victor Slone