Patents by Inventor Koichi Takamura

Koichi Takamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090092846
    Abstract: The invention is a method of treating, restoring or sealing a surface comprising applying an emulsion comprising a latex polymer, a cationic emulsifier, and optionally a recycling agent to the surface to wet the surface and depositing a surface treatment layer on the surface, wherein the depositing step occurs while the surface is wetted. The invention also includes a surface pretreatment composition comprising water, at least one acrylic latex polymer, an aromatic recycling agent, and at least one cationic emulsifier. Furthermore, the invention includes the surface resulting from the application of the emulsion used in the invention and concentrated emulsions for use with the surface treatment composition.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 9, 2009
    Inventors: Koichi Takamura, Armin Burghart, William Kirk
  • Publication number: 20080188594
    Abstract: A composition for rejuvenating asphalt pavement according to the present invention comprises an asphalt binder, water, a cationic surfactant, a recycling agent, and a cationic, co-agglomerated styrene butadiene rubber latex, which includes sulfur and a vulcanizing agent. The composition is also useful as a scrub seal, fog seal, sand seal as well as for crack filling and the prevention of reflective cracking. The inventive composition may be used in emulsions with different setup times. The invention also includes a method for treatment of aged and cracked asphalt by application of the disclosed compositions.
    Type: Application
    Filed: April 7, 2008
    Publication date: August 7, 2008
    Inventor: Koichi Takamura
  • Patent number: 7357594
    Abstract: A composition for rejuvenating asphalt pavement according to the present invention comprises an asphalt binder, water, a cationic surfactant, a recycling agent, and a cationic, co-agglomerated styrene butadiene rubber latex, which includes sulfur and a vulcanizing agent. The composition is also useful as a scrub seal, fog seal, sand seal as well as for crack filling and the prevention of reflective cracking. The inventive composition may be used in emulsions with different setup times. The invention also includes a method for treatment of aged and cracked asphalt by application of the disclosed compositions.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: April 15, 2008
    Assignee: Western Emulsions, Inc.
    Inventor: Koichi Takamura
  • Publication number: 20070238820
    Abstract: The invention is a product, comprising a substrate and a film that limits the transmission of water vapor comprising a polymer derived from one or more nonionic monomers polymerized in the presence of at least one nonionic surfactant and in the absence of ionic surfactants. The cloud temperature of the at least one nonionic surfactant is preferably less than the polymerization temperature. The nonionic surfactant is preferably an alkylene oxide (EO)m(PO)n adduct of an alkyl alcohol, alkylbenzene alcohol or dialkylbenzene alcohol, wherein (m+n)?14. The invention includes a dispersion formed by polymerizing nonionic monomers at a polymerization temperature in the presence of at least one nonionic surfactant with a cloud temperature less than the polymerization temperature; a water vapor barrier composition; a film formed from the dispersion; a method of making the dispersion; a method of making a film; and a method of reducing the ability of water vapor to be transmitted with respect to a substrate.
    Type: Application
    Filed: April 7, 2006
    Publication date: October 11, 2007
    Inventors: Armin Burghart, Koichi Takamura
  • Publication number: 20070238825
    Abstract: The invention is a dispersion essentially free of ionic surfactants comprising one or more copolymerizable monomers and a nonionic surfactant comprising alkylene oxide adduct of an alkyl alcohol, alkylbenzene alcohol or dialkylbenzene alcohol wherein the alkylene oxide includes one or more of ethylene oxide (EO)m and propylene oxide (PO)n, wherein (m+n)?14. The invention also includes an aqueous polymer dispersion essentially free of ionic surfactants comprising polymer particles, water, and a nonionic surfactant comprising an alkylene oxide adduct of an alkyl alcohol, alkylbenzene alcohol or dialkylbenzene alcohol wherein the alkylene oxide includes one or more of ethylene oxide (EO)m and propylene oxide (PO)n, wherein (m+n)?14, wherein the polymer particles are derived from one or more nonionic monomers and dispersed in the water and the nonionic surfactant is entrained in said polymer particles.
    Type: Application
    Filed: April 7, 2006
    Publication date: October 11, 2007
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20070238823
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Application
    Filed: April 7, 2006
    Publication date: October 11, 2007
    Inventors: Koichi Takamura, Armin Burghart
  • Patent number: 7250460
    Abstract: A method of forming a composition comprising adding at least one first compound that is at least one of an alkali metal salt, an ammonium salt, an alkali metal hydroxide, or an ammonium hydroxide and at least one second compound that is at least one of a Group IIA salt, a Group IIIA salt, a Group IIIB salt, a copper salt, a zinc salt, a cadmium salt, a manganese salt, an iron salt, a cobalt salt, or a nickel salt to a latex. This method allows for the formation of nanoparticles in the composition.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: July 31, 2007
    Assignee: BASF AG
    Inventor: Koichi Takamura
  • Publication number: 20070173580
    Abstract: A method of forming a composition comprising adding at least one first compound that is at least one of an alkali metal salt, an ammonium salt, an alkali metal hydroxide, or an ammonium hydroxide and at least one second compound that is at least one of a Group IIA salt, a Group IIIA salt, a Group IIIB salt, a copper salt, a zinc salt, a cadmium salt, a manganese salt, an iron salt, a cobalt salt, or a nickel salt to a latex. This method allows for the formation of nanoparticles in the composition.
    Type: Application
    Filed: April 20, 2004
    Publication date: July 26, 2007
    Inventor: Koichi Takamura
  • Publication number: 20050215673
    Abstract: A composition for rejuvenating asphalt pavement according to the present invention comprises an asphalt binder, water, a cationic surfactant, a recycling agent, and a cationic, co-agglomerated styrene butadiene rubber latex, which includes sulfur and a vulcanizing agent. The composition is also useful as a scrub seal, fog seal, sand seal as well as for crack filling and the prevention of reflective cracking. The inventive composition may be used in emulsions with different setup times. The invention also includes a method for treatment of aged and cracked asphalt by application of the disclosed compositions.
    Type: Application
    Filed: April 12, 2005
    Publication date: September 29, 2005
    Inventor: Koichi Takamura
  • Patent number: 6855754
    Abstract: An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and application temperature's than conventional cold paving/coating formulations while providing good mix times and curing behavior. The asphalt-based formulation can be formed by mixing water; an asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts, and ammonium hydroxide; at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts, and nickel salts; and optionally aggregate. Also, a method of preparing an asphalt-based formulation using these components.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: February 15, 2005
    Assignee: BASF AG
    Inventors: Koichi Takamura, Babak Golzar, Vanessa Adams, Patrick J. Mormile
  • Publication number: 20040106725
    Abstract: A polystyrene seed latex composition is provided having a total emulsion polymer content of from 0.2 to 2.0 weight percent and a particle diameter less than 150 Å. The seed latex is produced on a continuous basis by feeding to a continuous stirred reactor an emulsion stream and initiator stream. The feed streams are mixed in the stirred reactor at room temperature to produce the seed latex. Preferably, the initiator stream comprises a sodium formaldehyde sulfoxylate reducing agent. The amount of initiator charged into the continuous seed reactor is sufficient to complete both the seed and a subsequent continuous latex polymerization reaction.
    Type: Application
    Filed: May 8, 2001
    Publication date: June 3, 2004
    Applicant: BASF AG
    Inventors: Jonathan P. Antonucci, Michael A. Taylor, Koichi Takamura, Robert Racz
  • Patent number: 6737469
    Abstract: The present invention is a method of incorporating a water insoluble organic chemical into a styrene-butadiene rubber latex dispersion and the resulting styrene-butadiene rubber latex dispersion. A styrene-butadiene rubber latex dispersion is provided comprising an aqueous phase and a disperse phase, with the disperse phase including particles of styrene-butadiene rubber. An organic solvent that is miscible in water and the water insoluble organic chemical are added together to the styrene-butadiene rubber latex dispersion. The addition of the water-miscible organic solvent allows the water insoluble organic chemical to pass from the aqueous phase into the disperse phase thus limiting separation of the water insoluble organic chemical from the latex dispersion. The resulting SBR latex has increased properties over conventional latices that use the same amount of the water insoluble organic chemical but that do not include the water-miscible organic solvent.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 18, 2004
    Assignee: BASF AG
    Inventors: Koichi Takamura, Babak Golzar, Vanessa M. Adams
  • Publication number: 20040014845
    Abstract: An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and application temperature's than conventional cold paving/coating formulations while providing good mix times and curing behavior. The asphalt-based formulation can be formed by mixing water; an asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts, and ammonium hydroxide; at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts, and nickel salts; and optionally aggregate. Also, a method of preparing an asphalt-based formulation using these components.
    Type: Application
    Filed: March 10, 2003
    Publication date: January 22, 2004
    Inventors: Koichi Takamura, Babak Golzar, Vanessa Adams, Patrick J. Mormile
  • Publication number: 20030215286
    Abstract: A composition for rejuvenating asphalt pavement according to the present invention comprises an asphalt binder, water, a cationic surfactant, a recycling agent, and a cationic, co-agglomerated styrene butadiene rubber latex, which includes sulfur and a vulcanizing agent. The composition is also useful as a scrub seal, fog seal, sand seal as well as for crack filling and the prevention of reflective cracking. The inventive composition may be used in emulsions with different setup times. The invention also includes a method for treatment of aged and cracked asphalt by application of the disclosed compositions.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 20, 2003
    Inventor: Koichi Takamura
  • Publication number: 20030060549
    Abstract: The present invention is a method of incorporating a water insoluble organic chemical into a styrene-butadiene rubber latex dispersion and the resulting styrene-butadiene rubber latex dispersion. A styrene-butadiene rubber latex dispersion is provided comprising an aqueous phase and a disperse phase, with the disperse phase including particles of styrene-butadiene rubber. An organic solvent that is miscible in water and the water insoluble organic chemical are added together to the styrene-butadiene rubber latex dispersion. The addition of the water-miscible organic solvent allows the water insoluble organic chemical to pass from the aqueous phase into the disperse phase thus limiting separation of the water insoluble organic chemical from the latex dispersion. The resulting SBR latex has increased properties over conventional latices that use the same amount of the water insoluble organic chemical but that do not include the water-miscible organic solvent.
    Type: Application
    Filed: September 27, 2001
    Publication date: March 27, 2003
    Inventors: Koichi Takamura, Babak Golzar, Vanessa M. Adams
  • Patent number: 6348525
    Abstract: The present invention relates to the coagglomeration of random vinyl substituted aromatic/C4-C6 conjugated diolefin polymers With sulfur. Said coagglomerate is storage stable and easily blended with asphalt under a variety of mixing conditions. Further, polymer/asphalt blends prepared with the sulfur coagglomerated polymers show improved storage stability against phase separation.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: February 19, 2002
    Assignee: BASF Corporation
    Inventors: Koichi Takamura, Paul Velasco, Peter Blanpain, John Cheng, Heinz Plaumann, Richard W. Liu, Wayne Millican, Barry Baughman
  • Patent number: 6300392
    Abstract: The present invention relates to the coagglomeration of random vinyl substituted aromatic/C4-C6 conjugated diolefin polymers with sulfur. Said coagglomerate is storage stable and easily blended with asphalt under a variety of mixing conditions. Further, polymer/asphalt blends prepared with the sulfur coagglomerated polymers show improved storage stability against phase separation.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 9, 2001
    Assignee: BASF Corporation
    Inventors: Koichi Takamura, Paul Velasco, Peter Blanpain, John Cheng, Heinz Plaumann, Richard W Liu, Wayne Millican, Barry Baughman
  • Patent number: 6127461
    Abstract: The present invention relates to the coagglomeration of random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymers with sulfur. Said coagglomerate is storage stable and easily blended with asphalt under a variety of mixing conditions. Further, polymer/asphalt blends prepared with the sulfur coagglomerated polymers show improved storage stability against phase separation.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: October 3, 2000
    Assignee: BASF Corporation
    Inventors: Koichi Takamura, Paul Velasco, Peter Blanpain, John Cheng, Heinz Plaumann, Richard Liu, Wayne Millican, Barry Baughman
  • Patent number: 5998514
    Abstract: The present invention relates to random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer modified asphalt mixtures wherein the modifier is a keto-containing amide such as diacetone acrylamide (DAAM), an oxazoline containing copolymer, and an ethoxylated trimethylolpropane triacrylate.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: December 7, 1999
    Assignee: BASF Corporation
    Inventors: John Tze-Chiang Cheng, Heinz Plaumann, Koichi Takamura, Arthur Barry Baughman
  • Patent number: 5990203
    Abstract: The present invention relates to a method for improving the compatibility of random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer/asphalt mixtures comprising adding a modifier to said random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer/asphalt mixture selected from the group consisting of:(a) polymers containing an epoxy functionality(b) polymers containing a carboxyl functionality(c) monomers, oligomers, and polymers containing an amine functionality;(d) monomers, oligomers, and polymers containing an ester functionality; or mixtures thereof.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: November 23, 1999
    Assignee: BASF Corporation
    Inventors: John Tze-Chiang Cheng, Heinz Plaumann, Koichi Takamura, Arthur Barry Baughmann, Wai-chun Richard Liu