From Reactant Containing Two Or More Ethylenic Unsaturated Groups Patents (Class 521/150)
  • Patent number: 7005492
    Abstract: There is provided an ethylene-?-olefin-non-conjugated diene copolymer rubber satisfying the following requirements (1) to (4): (1) a ratio of a Z-average molecular chain length (Az) measured according to a gel permeation chromatography to a number average molecular chain length (An), Az/An, of the ethylene-?-olefin-non-conjugated diene copolymer rubber is from 20 to 30, (2) a ratio of a weight average molecular chain length (Aw), which is an index of a molecular weight distribution, to the number average molecular chain length (An), Aw/An, of the ethylene-?-olefin-non-conjugated diene copolymer rubber is more than 5, (3) a unimodal or bimodal molecular weight distribution structure having a molecular chain length component, which component is present in a maximum amount in a range of 3.8<Log Aw<4.5, exists in the ethylene-?-olefin-non-conjugated diene copolymer rubber, and (4) a viscosity (ML1+4, 121° C.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: February 28, 2006
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tatsuo Sassa
  • Patent number: 6960619
    Abstract: Acrylic composition for use in variety of indoor or outdoor sealing applications, where it is required to seal, to fill or to repair cracks, joints, gaps etc. in concrete, masonry, stone, wood or other constructional materials. The composition comprises acrylic based reactionable oligomers and it can be foamed and then polymerized while producing foam with structure suitable for sealing.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: November 1, 2005
    Assignee: Acryfoam Ltd.
    Inventors: Oleg Figovsky, Leonid Shapovalov, Raisa Potashnikov, Yury Tzaid, J. Bordado, David Letnik, Aster De Schijuer
  • Patent number: 6897247
    Abstract: A high internal phase emulsion composition comprising: a) at least three components; b) component A is a polymer, monomer or mixture thereof; c) component B is a polymer; d) component C is a compatiblizer; e) substantially no voids; and wherein the volume fraction of component A represents at least about 80% by volume of the total volume of components A, B and C; and wherein the volume fraction of component B represents less than about 20% by volume of the total volume of components A, B and C; and wherein at least two phases are formed, a phase containing a majority of component A is discrete and a phase containing a majority of component B is continuous.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: May 24, 2005
    Assignee: PolyE Inc.
    Inventor: Glenn Fredrickson
  • Patent number: 6852764
    Abstract: Provided is a blend comprising: a) from 20 to 60 wt % of a thermoplastic elastomer; b) from 8 to 30 wt % of a vinylaromatic polymer; c) from 10 to 30 wt % of one or more processing aid; d) from 0 to 20 wt % of one or more additives.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: February 8, 2005
    Assignee: Atofina Research S.A.
    Inventor: Jean-Marie Mlinaric
  • Patent number: 6759080
    Abstract: The invention discloses methods for making foams by photopolymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are disclosed. Articles and uses for the foams are also described.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: July 6, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Kristin La Velle Thunhorst, Mark David Gehlsen, Robin Edgar Wright, Eric Wayne Nelson, Steven Dean Koecher, Douglas Gold
  • Patent number: 6734218
    Abstract: There are provided: (i) a process for producing a foamed rubber having a density of less than 0.50 g/cm3, which comprises the step of foaming and cross-linking a rubber composition containing (i) an ethylene-&agr;-olefin copolymer rubber, (ii) a vulcanizing agent and (iii) a foaming agent having a particle diameter of not more than 10 &mgr;m in terms of a median diameter, wherein an amount of the foaming agent exceeds 4.0 parts by weight per 100 parts by weight of the ethylene-&agr;-olefin copolymer rubber, and (ii) a sealing material for car use, which comprises the foamed rubber obtained by the above-mentioned process for producing a foamed rubber.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 11, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Junichi Koshiba
  • Patent number: 6730710
    Abstract: A rubber composition comprising 100 parts by weight of a diene rubber and 0.5 to 20 parts by weight of a foaming agent-containing resin containing 5 to 65% by weight of a chemical foaming agent, wherein the resin is mainly a polyolefin resin which is not co-crosslinkable with the diene rubber and wherein the rubber composition is structured having microcapsule-shaped bubbles coated with a resin layer after vulcanization of the rubber.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: May 4, 2004
    Assignee: The Yokohama Rubber Co, Ltd.
    Inventors: Makio Mori, Takeshi Hotaka, Takashi Shirokawa
  • Patent number: 6720361
    Abstract: It is an object of the present invention to provide a foamable thermoplastic elastomer composition which produces a stable foam. The present invention provides a foamable thermoplastic elastomer composition which contains: (a) 10 to 90 parts by weight of one of an olefin-based resin and rubber having a melting or softening point of 140° C. or lower, (b) 9 to 85 parts by weight of heat-expandable microcapsules expanding at 120 to 300° C., (c) 1 to 50 parts by weight of a volatile composition, wherein the components (a) to (c) total 100 parts by weight, and another aspect of the invention provides a foamable thermoplastic elastomer composition which contains; the above said (a) to (c) and (d) 50 to 99 parts by weight of a thermoplastic resin, wherein the components (a) to (d) total 100 parts by weight, and also provides a method of producing the above foamable thermoplastic elastomer composition in two stages.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: April 13, 2004
    Assignee: Riken Technos Corp.
    Inventors: Michihisa Tasaka, Hiroki Mizuno
  • Patent number: 6703432
    Abstract: An object of the present invention is to provide a water adsorbing/desorbing organic polymer material having excellent water adsorbing/desorbing performance and which is inexpensive and readily disposable by incineration or the like. In order to attain this object, water adsorbing/desorbing organic polymer materials of the present invention are characterized by having a polymer side chain containing a hydrophilic group on the backbone of an organic polymer base.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: March 9, 2004
    Assignee: Ebara Corporation
    Inventors: Kunio Fujiwara, Kazuyoshi Takeda, Hiroshi Yokota, Hidenobu Arimitsu
  • Patent number: 6635727
    Abstract: The ethylenic copolymer rubber according to the present invention is a novel and useful ethylenic copolymer rubber which can be cross-linked at a high velocity and is superior in scorching stability, in workability and in moldability, of which cross-linked product is superior in the mechanical properties, such as the cross-linked rubber strength etc., and in the form-preservability. A cross-linkable rubber composition containing this ethylenic copolymer rubber is utilized for producing, for example, cross-linked molded rubber product for use as sealing element and automobile weather strip sponge.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: October 21, 2003
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Taku Koda, Kotaro Ichino, Masaaki Kawasaki, Keiji Okada
  • Patent number: 6602928
    Abstract: A packing material for solid phase extraction, which is a particle having an exclusion limit molecular weight of 1×103 to 1.5×104 in gel permeation chromatography using a standard polystyrene as the sample. A column for solid phase extraction and a cartridge for solid phase extraction, a method of using the packing material; and a process for treating a sample using the column or cartridge are also disclosed.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: August 5, 2003
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryuji Takahashi, Kuniko Igarashi, Hiroshi Suzuki
  • Patent number: 6573307
    Abstract: A process to make particles by anaerobic reaction of a water-insoluble solution of organic compounds comprising (a) a monomer selected from C2-4 alkylene glycol esters of a C3-6 acrylic acid and a divinyl benzene; (b) a polyfluorinated vinyl monomer; (c) a monomer selected from acrylic acid, methacrylic acid and esters thereof; (d) a free radical initiator; and (e) a water-insoluble, organic solvent-soluble porogenic material, the weight ratio of comonomers (a) plus (b) plus (c) to the porogenic material being from 0.5:1 to 2:1. The adsorbent particles produced by the process are useful in carrying out chromatographic separations, or in the production of medical devices.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: June 3, 2003
    Assignee: Prometic Biosciences, Inc.
    Inventors: Leonard H. Smiley, Christopher Lowe, Julie Tucker
  • Patent number: 6573305
    Abstract: The invention discloses methods for making foams by photopolymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are disclosed. Articles and uses for the foams are also described.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: June 3, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Kristin LaVelle Thunhorst, Mark David Gehlsen, Robin Edgar Wright, Eric Wayne Nelson, Steven Dean Koecher, Douglas Gold
  • Patent number: 6569911
    Abstract: A method of manufacturing a support media from a cross-linked polymerisate based on vinyl compounds, and exhibiting residual vinyl groups. The characteristic feature of the method is that the polymerisate is subjected to a heating step that preferably is carried out under reduced access of oxygen. The use of the support media is also described.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: May 27, 2003
    Assignee: Amersham Biosciences AB
    Inventors: Torunn Arntsen, Jan Roger Karlson, Geir Fonnum, Steinar Hagen
  • Patent number: 6550508
    Abstract: A rubber composition for a tire tread, or a pneumatic tire using the same in a tire tread portion, wherein the tread portion contains a diene rubber; and carbon black and/or silica; and a gas-encapsulated thermoplastic resin and, further, a short fiber, a hard particle and/or a liquid polymer, and wherein the gas-encapsulated thermoplastic resin particle is obtained by expanding, upon heating. at a temperature of an expansion starting temperature thereof or more, prior to vulcanization of a rubber, a thermally expansible thermoplastic resin particle, which comprises a thermoplastic resin having an expansion starting temperature of from 70° C. to less than 120° C. and having a heat resistance to withstand vulcanization of rubber, followed by vulcanization to uniformly disperse the gas-encapsulated thermoplastic resin in the rubber, or a short fiber, a hard particle and/or a liquid polymer is further compounded to give a high frictional force on ice.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: April 22, 2003
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yoichi Yamaguchi, Naoya Amino
  • Patent number: 6515037
    Abstract: A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 4, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Mototake Tsutsui, Hiroyuki Maehara, Kouichi Hatada, Tsutomu Ushioda
  • Patent number: 6509386
    Abstract: A method of forming a porous insulating composition comprising the steps of (A) providing at least one organic sacrificial material/dielectric material composition comprising at least one organic sacrificial material and at least one dielectric material; and (B) removing the at least one organic sacrificial material in the at least one organic sacrificial material/dielectric material composition, in order to generate pores in the at least one dielectric material. Also disclosed is a composition useful in making a porous insulator, comprising a heat-activated, pore-forming, sacrificial material; and a dielectric material. Alternatively, the composition useful in making a porous insulator, comprises at least one pore-forming, organic sacrificial material; and at least one dielectric material, wherein the at least one pore-forming, material is a norbornene-type polymer.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: January 21, 2003
    Assignee: Georgia Tech Research Corporation
    Inventor: Paul A. Kohl
  • Patent number: 6482867
    Abstract: There are disclosed a polymer packing material suitable for liquid chromatography and a producing method thereof. The polymer packing material having a polymer particle based on a styrene skeleton with monodispersed particle distribution can be obtained by hydrophilic treatment of an inner surface of a micropore existing in a fine pore of the polymer packing material, or subsequent introduction of a hydrophobic group into the inner hydrophilic surface by chemical modification. A method of producing the polymer packing material suitable for liquid chromatography includes the step of polymerizing glycerol dimethacrylate as a crosslinking agent and 2-ethylhexl methacrylate as a monomer according to a two-step swelling polymerization process. Alternatively, the producing method includes the step of crosslinking and polymerizing only glycerol dimethacrylate to form a polymer, and introducing the hydrophobic group into the polymer by chemical modification.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: November 19, 2002
    Assignee: Shiseido Co., Ltd.
    Inventors: Tomohiko Kimura, Masashi Teramachi, Ken Hosoya, Yutaka Ohtsu
  • Patent number: 6479559
    Abstract: There is obtained a chlorinated vinyl chloride resin composition from which a siding molded article having good appearance and excellent heat resistance, impact resistance and weatherability is obtained. A chlorinated vinyl chloride resin composition for siding extrusion molding is obtained and a siding molded article is prepared therefrom, said chlorinated vinyl chloride resin composition comprising 100 parts by weight of a chlorinated vinyl chloride resin and 3 to 20 parts by weight of an acrylic graft rubber copolymer, wherein the acrylic graft rubber copolymer contains 30 to 90% by weight of acrylic hollow rubber particles whose average void ratio is 3 to 90% by volume in a latex state.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: November 12, 2002
    Assignee: Kaneka Corporation
    Inventors: Atsushi Takai, Toshio Okuhara, Kazumasa Yamane
  • Patent number: 6472443
    Abstract: Highly crosslinked monolithic porous polymer materials for chromatographic applications. By using solvent compositions that provide not only for polymerization of acrylate monomers in such a fashion that a porous polymer network is formed prior to phase separation but also for exchanging the polymerization solvent for a running buffer using electroosmotic flow, the need for high pressure purging is eliminated. The polymer materials have been shown to be an effective capillary electrochromatographic separations medium at lower field strengths than conventional polymer media. Further, because of their highly crosslinked nature these polymer materials are structurally stable in a wide range of organic and aqueous solvents and over a pH range of 2-12.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: October 29, 2002
    Assignee: Sandia National Laboratories
    Inventor: Timothy J. Shepodd
  • Patent number: 6465534
    Abstract: A sponge including an elastic material having a lipid, such as an oil, a fat, or a combination thereof, integrally formed therewith. The elastic material includes an amount from between 0.5 to 20 parts by weight of the lipid, and the lipid is selected from the group consisting of esters of fatty acids, alkanes, squalane and derivatives thereof squalene, bisabolol, animal hair oils and fats, wax, lanolin and combinations thereof to provide the sponge with a gentle feel. The sponge may also be made by first foam molding the sponge from an elastic material, impregnating the sponge with a water-dispersed lipid and allowing the sponge to dry for a predetermined amount of time so that the lipid is substantially inseparable from the elastic material.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: October 15, 2002
    Assignee: Yukigaya Chemical Industry Co., Ltd.
    Inventors: Yoshio Fukuzawa, Kazuo Obata, Takayuki Hayashi
  • Patent number: 6458863
    Abstract: A vibration damping, resinous, open cell cellular body is disclosed. The body has a base material thereof which consists essentially of a mixture of a tri-block copolymer as a combination of polystyrene and vinyl-polyisoprene and an ethylene series resin. In a method of manufacture, the mixture is blended and kneaded with a foaming agent and a crosslinking agent to form a foamable and crosslinkable composition. The composition is heated in a non-airtight mold to foam, thereby forming a cellular body with cells therein. The cellular body is then mechanically deformed to cause cells therein to be interconnected, thereby producing the open cell cellular body.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: October 1, 2002
    Assignee: Sanwa Kako Company Limited
    Inventors: Koji Yoshimura, Shusaku Maruo
  • Patent number: 6455604
    Abstract: There is provided a process for producing a foamed rubber comprising a step of foaming a rubber composition, which composition comprises: (A) 100 parts by weight of an ethylene-&agr;-olefin copolymer rubber, (B) 10 to 100 parts by weight of mica, and (C) 2 to 10 parts by weight of a foaming agent.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: September 24, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tatsuo Sassa
  • Patent number: 6414043
    Abstract: A method of making a novel composition of a porous medium comprising volume elements of both voids and pores wherein the voids are much larger than the mean size of the pores. The method includes a first step of preparation of a porous medium comprising solid particles the approximate size selected for the voids and pores as volume elements and a second step of removing the particles by etching out with hydrofluoric acid or other means to form a porous medium comprising both voids and pores. In another embodiment, the voids are prepared from Bow etching out of a polymeric hydrogel silica particles which were allowed to self-assemble as a crystalline colloidal array prior to formation of the polymeric hydrogel around them, thereby forming a porous medium containing a crystalline colloidal array of voids containing aqueous solution. In another embodiment, a method of partitioning macromolecules between a solution comprising the macromolecules, and the voids and pores of a porous medium.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: July 2, 2002
    Assignee: University of Pittsburgh
    Inventors: Sanford A. Asher, Lei Liu
  • Patent number: 6387974
    Abstract: Macroporous polymers having selected porosity and permeability characteristics that provide rigid polymer matrices suitable for use in medium and high pressure reversed phase liquid chromatography (RPC) are disclosed. A method for preparing the polymers using selected mixed porogens in selected proportions relative to the monomer phase is also disclosed. The polymers are especially useful as stationary phases in large scale chromatography columns without developing increased pressures during prolonged use, while maintaining good chromatographic performance for targeted biomolecules, such as insulin.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: May 14, 2002
    Assignee: Rohm and Haas Company
    Inventors: Karl Chaplin Deissler, Marlin Kenneth Kinzey, John Joseph Maikner, Robert E. Rosen
  • Patent number: 6362245
    Abstract: A porous copolymer particle having a particle size of from 0.1 to 2,000 &mgr;m and a permanent pore size of from 2 to 800 nm comprising (i) a monomer containing from 5 to 60 wt % of a monomer (A) selected from N-vinylcarboxylic acid amides represented by formula (I): wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a hydrogen atom, a C1-C8 alkyl group, a phenyl group or a phenyl group substituted with a methyl group or an ethyl group and (ii) from 40 to 95 wt % of a copolymerizable monomer (B) which contains a crosslinking monomer.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: March 26, 2002
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryuji Takahashi, Hiroshi Suzuki, Kuniaki Shimbo
  • Patent number: 6331576
    Abstract: A surface decorated foam skin of cross-linked rubbery soft olefin resin, comprising rubbery soft olefin resin, characterizing by having (1) an average cell diameter of 50 to 400 &mgr;m, (2) a crystallinity of 5 to 40% (3) a hysteresis loss of 35% or lower, and (4) an embossing percentage of 40% or higher.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: December 18, 2001
    Assignee: NHK Spring Co Ltd
    Inventors: Koichi Kusakawa, Shigeki Ichimura
  • Patent number: 6271278
    Abstract: A superporous hydrogel composite is formed by polymerizing one or more ethylenically-unsaturated monomers, and a multiolefinic crosslinking agent, in the presence of particles of a disintegrant and a blowing agent. The disintegrant, which rapidly absorbs water, serves to greatly increase the mechanical strength of the superporous hydrogel and significantly shorten the time required to absorb water and swell. Superporous hydrogel composites prepared by this method have an average pore size in the range of 10 &mgr;m to 3,000 &mgr;m. Preferred particles of disintegrant include natural and synthetic charged polymers, such as crosslinked sodium carboxymethylcellulose, crosslinked sodium starch glycolate, and crosslinked polyvinylpyrrolidone. The blowing agent is preferably a compound that releases gas bubbles upon acidification, such as NaHCO3. Improved hydrogel composites formed without a blowing agent are also provided.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: August 7, 2001
    Assignee: Purdue Research Foundation
    Inventors: Kinam Park, Jun Chen, Haesun Park
  • Patent number: 6239187
    Abstract: The present invention relates to foams comprising cycloolefin copolymers. The foam of the invention comprises at least one cycloolefin copolymer which comprises from 0.1 to 100% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units derived from one or more polycyclic olefins having one or more norbornene units and from 0 to 99% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units derived from one or more acyclic olefins of the formula  where Ri, Rii, Riii and Riv are identical or different and are each a hydrogen atom, a linear, branched, saturated or unsaturated C1-C20-hydrocarbon radical or a C6-C18-aryl radical and from 0 to 99% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units of one or more monocyclic olefins of the formula VIII  where n is a number from 2 to 10, and voids which can contain one or more gaseous substances.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: May 29, 2001
    Assignee: Ticona GmbH
    Inventors: Wilfried Hatke, Freddy Helmer-Metzmann, Alexandra Jacobs
  • Patent number: 6231960
    Abstract: Biodegradable and/or compostable polymers are made from isoprene, 2,3-dimethyl-1,3-butadiene or like conjugated dienes and a crosslinking agent having a cleavable linking group such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as other biodegradable articles such as films, and latexes useful as binders and adhesives.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: May 15, 2001
    Assignee: The Procter & Gamble Company
    Inventors: John C. Dyer, Bryn Hird, Pui Kwan Wong
  • Patent number: 6225366
    Abstract: Polyolefin foam materials of high dimensional stability at elevated temperatures are produced from modified polypropylenes and unmodified polypropylenes. The modified polypropylenes used are produced by mixing polypropylene particles with thermally decomposing free radical-forming agents, absorbing readily volatile bifunctional monomers and heating and melting the mixture. Areas of application for the polyolefin foam materials of high dimensional stability at elevated temperatures are the packaging sector, motor vehicle parts, sports and leisure equipment, industrial applications, as well as applications in the building sector.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: May 1, 2001
    Assignee: Borealis AG
    Inventors: Manfred Raetzsch, Hartmut Bucka, Achim Hesse, Ulf Panzer, Norbert Reichelt
  • Patent number: 6147131
    Abstract: High internal phase emulsions (HIPEs), porous polymeric materials made therefrom, and methods for making and using the same. Specific embodiments of the invention include water-in-oil high internal phase emulsions having at least 70 volume percent of an internal aqueous phase and less than 30 volume percent of an external oil phase wherein the oil phase comprises a vinyl polymerizable monomer and a surfactant effective to stabilize the emulsion. The subject surfactants are oil soluble and preferably include an oxyalkylene component.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: November 14, 2000
    Assignee: The Dow Chemical Company
    Inventors: Steven W. Mork, Daniel Patrick Green, Gene D. Rose
  • Patent number: 6143804
    Abstract: A polyolefinic resin is combined with a (meth)acrylic polyfunctional monomer compound having an aromatic ring, an alicyclic ring or a heterocyclic ring nearly in the center of its chemical formula, and a pyrolyzable chemical foaming agent to give a curable and foamable polyolefinic resin composition. The composition is shaped into a sheet, then cured and foamed into a sheet foam. The cured foam of polyolefinic resin has a curing degree of from 10 to 70%, and has the advantages of good heat resistance, good workability and shapability, and good pressure resistance.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: November 7, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Nario Uejyukkoku, Motoi Naito, Fusayoshi Akimaru, Akihiro Kataoka, Masakazu Kanazawa
  • Patent number: 6132847
    Abstract: A formed rubber extruded product which is formed of a vulcanizate of a rubber blend comprising a sulfur-vulcanizable ethylene-propylene-type rubber (EPDM) as a starting rubber and a pyrolytic foaming agent. The vulcanizate has a specific gravity of from 0.9 to 1.0 and a surface roughness (RZD) of 14 micrometers or less. The rubber blend contains the pyrolytic foaming agent in the form of an inorganic powder-supported foaming agent. A particle diameter of the inorganic powder in the inorganic powder-supported foaming agent is approximately 9 micrometers or less, and a particle diameter of the pyrolytic foaming agent is approximately 8 micrometers or less. Further, crystalline PE is contained in an amount of from 6 to 30 parts per 100 parts of EPDM. The foamed rubber extruded product of the present invention can be produced by the extrusion at a high rate.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: October 17, 2000
    Assignees: Toyoda Gosei Co., Ltd., Eiwa Chemical Ind. Co., Ltd.
    Inventors: Tomoaki Okita, Katsumi Nakashima, Takashi Mizushima, Norikazu Mayama, Hitoshi Kondo
  • Patent number: 6133393
    Abstract: Purification of physiological liquids of organism is performed by passing a physiological liquid with toxicants removed from a patient through a material which has a size a shape, and a structure selected so as to remove toxic compounds in the molecular range of 300 to 30000 Dalton from the physiological liquid and which is composed of a porous hydrophobic divinylbenzene copolymer which initially has surface exposed vinyl groups in which thereafter the vinyl groups are chemically modified so as to form different surface exposed functional groups with a greater hydrophilicity and greater biocompatibility than those of the vinyl groups.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: October 17, 2000
    Assignee: Renal Tech International LLC
    Inventors: Vadim Davankov, Maria Tsyurupa, Ludmila Pavlova
  • Patent number: 6124370
    Abstract: Foamed articles having enhanced tensile, elastic recovery, and creep and fatigue resistance properties are prepared using a dual cure system. This system comprises a heat or radiation-activated first stage cure (which follows or coincides with foaming) followed by a moisture-activated second stage cure. Heat-activated curing systems include peroxide, sulfur, etc., and radiation-activated cure systems include electron beam, gamma-ray, etc. Moisture-activated systems include silane, sulfonyl chloride, and the like.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: September 26, 2000
    Assignee: The Dow Chemical Company
    Inventors: Kim L. Walton, Seema V. Karande
  • Patent number: 6110985
    Abstract: A constrained layer damping structure is provided, including a panel to be damped, a constraining layer and a layer of foam vibration damping material sandwiched therebetween. The foam vibration damping material is provided from a composition including 1-20 weight percent elastomeric polymer, 20-60 weight percent thermoplastic polymer, 0.5-18 weight percent tackifier, 4-23 weight percent asphalt filler, 20-50 weight percent inorganic filler and 0.2-7 weight percent blowing agent.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: August 29, 2000
    Assignee: Soundwich, Inc.
    Inventor: Maurice E. Wheeler
  • 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: 6100306
    Abstract: The present invention relates to porous crosslinked polymeric microbeads having cavities joined by interconnecting pores wherein at least some of the cavities at the interior of each microbead communicate with the surface of the microbead. The present invention also relates to a process for producing a porous, crosslinked polymeric microbead as well as the product of this process. This process involves combining an oil phase with an aqueous discontinuous phase to form an emulsion, adding the emulsion to an aqueous suspension medium to form an oil-in-water suspension of dispersed emulsion droplets, and polymerizing the emulsion droplets to form microbeads. At least 10% of the microbeads produced in accordance with the present invention are substantially spherical or substantially ellipsoidal or a combination of the two.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: August 8, 2000
    Assignee: Biopore Corporation
    Inventors: Nai-Hong Li, James R. Benson, Naotaka Kitagawa
  • Patent number: 6057376
    Abstract: Stable high internal phase water-in-oil emulsions containing polymerizable vinyl monomers, crosslinking monomers and initiators are obtained, useful in producing low density porous crosslinked polymeric materials by using a surfactant system containing (a) an anionic surfactant, the anionic surfactant having an oil soluble tail and an anionic functional group and (b) one or more quatemary salts having one or more hydrocarbon groups having greater than or equal to 8 carbon atoms. A water-in-oil emulsion can be formed with lower surfactant concentration than sorbitan fatty acid ester alone and improved surfactant performance at elevated temperatures is obtained.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: May 2, 2000
    Assignee: Shell Oil Company
    Inventors: Ronald Marshall Bass, Thomas Fairchild Brownscombe
  • Patent number: 6048909
    Abstract: The present invention pertains to improved alkenyl aromatic polymer foams (and processes for their preparation) having increased heat distortion temperature and improved dimensional stability while maintaining good tensile/tear, creep and environmental dimensional change properties.The closed cell low density alkenyl aromatic polymer foams exhibit increased heat distortion temperature, when substantially random interpolymers of about 21 to about 65 mol % styrene are blended in. When these same alkenyl aromatic polymer foams are made without these interpolymers, the heat distortion temperature is not improved.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: April 11, 2000
    Assignee: The Dow Chemical Company
    Inventors: Bharat I. Chaudhary, Russell P. Barry, Stephanie C. Cirihal
  • Patent number: 6022902
    Abstract: Porous organic articles having no surface functionality may be treated by remote plasma discharge to thereby introduce functionality to the surface of the article. The functionality is introduced throughout the article's surface, including the exterior surface and the surfaces of the pores. Little or no degradation of the porous organic article occurs as a result of the functionalization. Amino, hydroxyl, carbonyl and carboxyl groups may be introduced to the article. In this way, an essentially inert hydrophobic porous article, made from, for example, polyethylene, can have its surface modified so that the surface becomes hydrophilic. The remote plasma discharge process causes essentially no change in the bulk properties of the organic article. The remote plasma discharge process is preferably conducted so that no photons, and particularly no ultraviolet radiation, is transmitted from the plasma glow to the porous article.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: February 8, 2000
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Steven L. Koontz
  • Patent number: 5994422
    Abstract: Hot-curing, foamable reactive compositions based on natural and/or synthetic rubbers containing olefinic double bonds, vulcanizing agents and blowing agents with a high percentage content of sulfur give foamed rubber compositions exhibiting high structural strength and high volume expansion. These compositions are suitable as multifunctional filling materials for hollow structures or hollow profiles in vehicle or machine construction. At one and the same time, they perform a sealing function, damp acoustic vibration and stiffen the hollow structures to a considerable extent.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: November 30, 1999
    Assignee: Henkel-Teroson GmbH
    Inventors: Peter Born, Frank Dittrich, Michael Hirthammer
  • Patent number: 5977194
    Abstract: High internal phase emulsions having an internal aqueous phase of greater than 70 percent by volume and an external oil phase comprising a vinyl polymerizable monomer contain a surfactant capable of chemically binding to the polymerizable monomer. Polymeric foams having a high internal phase emulsion stabilizing surfactant chemically bound to the polymeric material and a liquid capacity of from about 70 to 99 percent of its saturated volume can be prepared from such emulsions.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: November 2, 1999
    Assignee: The Dow Chemical Company
    Inventors: Steven W. Mork, Gene D. Rose
  • Patent number: 5968427
    Abstract: A foamed rubber composition for pneumatic tires comprises at least one diene polymer as a rubber ingredient and includes closed cells in a matrix rubber, each of these cells being covered with a coat layer made from a given amount of a resin or resin composite having a JIS-C hardness of not less than 75, a particle size of 10-200 .mu.m and a reacted conjugate diene unit content of not less than 10% by weight. In the production of the foamed rubber composition, the melting point or glass transition point of the resin or resin composite is restricted to at least 5.degree. C. lower than the vulcanizing temperature.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: October 19, 1999
    Assignee: Bridgestone Corporation
    Inventor: Hiroyuki Teratani
  • Patent number: 5928459
    Abstract: Polymethacrylimide foams are prepared by a method, comprising:preparing a mixture consisting of(a) a monomer mixture of 40-60 wt. % methacrylonitrile, 60-40 wt. % methacrylic acid, and, optionally, up to 20 wt. %, based on the sum of methacrylic acid and methacrylonitrile, of other monofunctional, vinyl-unsaturated monomers,(b) 0.5-8 wt. % of a propellant mixture of formamide or monomethyl formamide and a univalent C.sub.3-8 -aliphatic alcohol,(c) a cross-linking agent system, which consists of(c.1) 0.005-5 wt. % of a vinyl-unsaturated compound which can be radically polymerized, with at least two double bonds in the molecule, and(c.2) 1-5 wt. % magnesium oxide, dissolved in the monomer mixture, and at least one radical initiators and optionally at least one additive, shaped in the form of a sheet;polymerizing the monomers in the sheet;subsequently foaming the polymerizate sheet at temperatures from 200-260.degree. C.; and thenheat treating the sheet in two steps, at a first step of 2-6 hours at 100-130.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: July 27, 1999
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Werner Geyer, Hermann Seibert, Sabine Servaty
  • Patent number: 5922780
    Abstract: Polymers are made from 1,3,7-octatriene or like conjugated polyenes and a crosslinking agent having at least 2 activated double bonds such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as latexes that are useful as binders and adhesives.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: July 13, 1999
    Assignee: The Procter & Gamble Company
    Inventors: John Collins Dyer, Bryn Hird, Pui Kwan Wong, Sharon Marie Beshouri
  • Patent number: 5912276
    Abstract: Stable high internal phase water-in-oil emulsions containing polymerizable vinyl monomers, crosslinking monomers and initiators are obtained useful in producing low density porous crosslinked polymeric materials by using a surfactant system containing (a) one or more sorbitan fatty acid esters or saccharide fatty acid esters or mixtures thereof and (b) one or more quaternary salts having one or more greater than or equal to 8 carbon atom hydrocarbon groups. A water-in-oil emulsion can be formed with lower surfactant concentration than sorbitan fatty acid ester alone and improved surfactant performance at elevated temperatures is obtained. Sludge formation otherwise observed with the use of sorbitan fatty acid ester surfactants is also reduced or eliminated.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: June 15, 1999
    Assignee: Shell Oil Company
    Inventors: Robert Paul Adamski, Sharon Marie Beshouri, Virittamulla Gamage Chamupathi
  • Patent number: 5902858
    Abstract: A modified polypropylene resin obtained by melt-kneading a polypropylene resin, an isoprene monomer and a radical polymerization initiator, which has a high melt viscosity and a high melt tensile strengh and is hard to cause draw-down, and which provides, by foaming thereof, foamed articles having low density, high closed cell content, beautiful appearance and excellent heat resistance.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: May 11, 1999
    Assignee: Kaneka Corporation
    Inventors: Tetsuo Okura, Osamu Miyama, Haruo Tomita
  • Patent number: 5902834
    Abstract: A method of producing open porous spherical particles by polymerizing monovinyl monomers and divinyl monomers and/or polyvinyl monomers (cross-linkers) in an emulsion with the aid of an initiator. The method is characterized by the steps of (i) preparing a w/o/w emulsion which comprises an aqueous phase having emulsified therein droplets which contain a water-in-oil emulsion, wherein the oil phase in the droplets includes vinyl monomers and an emulsifier which provides an inverse emulsion and the droplets have a diameter smaller than 2,000 .mu.m, and wherein the total amount of water is between 75-99% (w/w); and (ii) thereafter initiating polymerization and isolating the particles, optionally after sieving, from the reaction mixture after the polymerization process. A population of open spherical porous polymer particles which have a diameter within the range of 50 .mu.m-2,000 .mu.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: May 11, 1999
    Assignee: Pharmacia Biotech AB
    Inventor: Ingrid Porrvik