Patents by Inventor Takaaki Murai

Takaaki Murai 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).

  • Patent number: 5942320
    Abstract: A barrier composite film comprises a base film, an anchor coat layer, an inorganic layer such as a silicon oxide layer, and a coating layer containing a silane coupling agent and a barrier resin (e.g. a vinylidene chloride-series copolymer, an ethylene-vinyl alcohol copolymer), the layers being formed on at least one side of the base film in the order of reference. The anchor coat layer can be made of (A) a chlorine-containing resin such as a vinyl chloride-vinyl acetate copolymer, (B) a polyisocyanate compound, and (C) a saturated polyester resin having a glass transition temperature of -10.degree. C. to 20.degree. C. and being substantially unreactive to the component (B). A heat-sealing layer may be formed on the surface of the coating layer or the other side of the base film. This composite film provided with the inorganic layer can avoid a loss of its adhesive properties and barrier properties even under severe conditions such as retort treatment.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: August 24, 1999
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Ryuta Miyake, Takaaki Murai
  • Patent number: 5853862
    Abstract: At least one side of a base film is successively covered with an anchor coat layer comprising (A) a chlorine-containing resin e.g. a vinyl chloride-vinyl acetate copolymer, (B) a polyisocyanate compound and (C) a saturated polyester resin having glass transition temperature of -10.degree. C. to 20.degree. C. and being substantially unreactive to the polyisocyanate compound, and an inorganic layer such as a silicon oxide. The component (C) includes a noncrystalline saturated polyesters each having a hydroxyl value of 0 to 15 mg KOH/g or acid value of 0 to 10 mg KOH/g. The anchor coat layer may comprise about 10 to 500 parts by weight of the component (B) and 1 to 50 parts by weight of the component (C) relative to 100 parts by weight of the component (A). Such composite film inhibits deterioration of the adhesive properties and barrier properties even when exposed to severe conditions such as retort treatment.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: December 29, 1998
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Ryuta Miyake
  • Patent number: 5770301
    Abstract: At least one side of a polyester or other base film is successively covered with an inorganic layer composed of a silicon oxide or the like and a coating layer comprising a silane coupling agent and a barrier resin (e.g. vinylidene chloride-based copolymer, ethylene-vinyl alcohol copolymer) to provide a barrier composite film. The amount of the silane coupling agent is about 0.05 to 10 parts by weight relative to 100 parts by weight of the barrier resin. A heat-sealing layer is optionally formed on the surface of the barrier resin coating layer or on the other side of the base film. Such barrier composite film has excellent transparency and retains high barrier properties and adhesive properties of covering layer despite its thin covering layer.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: June 23, 1998
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Ryuta Miyake
  • Patent number: 5510428
    Abstract: Compositions (I), (II) and (III) comprising compounds having vinyl groups as side chains and epoxidized compositions (XI), (XII) and (XIII) thereof, which can be prepared by the various reaction combinations of (a) with (b) or (b)+(c), and or (d), where(a) is at least one compound having at least one vinyl group and one epoxy group in the molecule; (b) is at least one of a polybasic compound, an anhydride thereof, a polymer having carboxylic groups at terminals and a polymer having carboxylic groups as side chains; (c) is at least one organic compound having at least one active hydrogen atom; and (d) is at east one of an unsaturated monocarboxylic compound or an unsaturated monocarboxylic ester having a hydroxyl group.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: April 23, 1996
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yoshiyuki Harano, Sozo Namai, Katsuyuki Maeda, Takaaki Murai
  • Patent number: 5494977
    Abstract: Compositions(I), (II) and (III) comprising compounds having vinyl groups as side chains and epoxidized compositions(XI), (XII) and (XIII) thereof, which can be prepared by the various reaction combinations of (a) with (b) or (b)+(c), and or (d), where(a) is at least one compound having at least one vinyl group and one epoxy group in the molecule; (b) is at least one of a polybasic compound, an anhydride thereof, a polymer having carboxylic groups at terminals and a polymer having carboxylic groups as side chains; (c) is at least one organic compound having at least one active hydrogen atom; and (d) is at least one of an unsaturated monocarboxylic compound or an unsaturated monocarboxylic ester having a hydroxyl group.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: February 27, 1996
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yoshiyuki Harano, Sozo Namai, Katsuyki Maeda, Takaaki Murai
  • Patent number: 5143997
    Abstract: A polycarbonate polyol composition which can be used to prepare polycarbonate(meth)acrylate and urethane(meth)acrylate compositions is obtained by the ester interchange reaction of a polycarbonate diol composition with a triol and/or tetraol. The (meth)acrylate compositions have excellent photo and electron beam curability and the cured layers prepared therefrom have excellent heat resistance under moisture conditions.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: September 1, 1992
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Toshio Endo, Takaaki Murai, Tatsumi Fujii
  • Patent number: 5100999
    Abstract: A polycarbonatediol composition is disclosed having carbonate bonds and from about 1 to 40 ether bonds to one carbonate bond in a molecule, which can provide polyurethanes having high mechanical strength and heat and moisture resistibility, and furthermore having improved properties at low temperatures.Further disclosed is a polyurethane resin prepared by reaction of an organic diisocyanate compound with the polycarbonatediol composition. The polyurethane resin has excellent properties under low temperature conditions, while retaining high levels of mechanical strength, excellent resistibility under high heat and moisture conditions, etc., thereby maintaining a good balance of properties. The polyurethane resin in accordance with the present invention is useful in a very wide variety of forms, including spandex, rigid or flexible urethane foams, thermoplastic urethane elastomers and thermosetting urethane elastomers, adhesives, synthetic leather, paints, etc.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: March 31, 1992
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Tatsumi Fujii
  • Patent number: 4978691
    Abstract: A polycarbonatediol composition is disclosed having the property of being liquid at room temperature because of its crystallinity being disordered due to random structures, which comprises a mixture of 1,6-hexanediol and polyvalent alcohol having at least one side chain. Accordingly, the disclosed composition has excellent processability in the case of preparing a polyurethane resin, etc.Further disclosed is a polyurethane resin prepared by reaction of an organic diisocyanate compound with the polycarbonatediol composition. The polyurethane resin has excellent properties under low temperature conditions, while retaining high levels of mechanical strength, excellent resistibility under high heat and moisture conditions, etc., thereby maintaining a good balance of properties.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: December 18, 1990
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Tatsumi Fujii
  • Patent number: 4841017
    Abstract: Disclosed as a polyether compound having ether groups and vinyl double bonds represented by formula (I) ##STR1## and an epoxy resin represented by formula (II) ##STR2## wherein R.sup.1 represents a residue group of an organic compound having l active hydrogen atoms, n1 through nl each represents 0 or an integer of from 1 to 100, the sum of integers represented by n1 through nl is from 1 to 100, and l represents an integer of from 1 to 100, and A represents from 1 to 100, and A represents ##STR3## or a mixture of ##STR4## wherein R.sup.2 represents a residue group of mono epoxy compound, and B represents ##STR5## or a mixture of ##STR6## wherein X represents a ##STR7## group, wherein R.sup.3 represents a hydrogen atom, an alkyl group, an alkyl carbonyl group, or an arylcarbonyl group, provided that the epoxy resin represented by formula (II) contains at least one ##STR8## group: In a further aspect, the invention relates to processes for production thereof.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: June 20, 1989
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Katsuhisa Sakai
  • Patent number: 4835213
    Abstract: A process for producing a lactone polymer which comprises reacting an ester compound synthesized from an alcohol and an acid or acid anhydride thereof with a lactone and a ring-opening polymerization initiator without being accompanied by condensation. The thus produced lactone polymer is effective for preventing shrinkage of thermosetting resins, particularly unsaturated polyester resins.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: May 30, 1989
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Shoji Watanabe, Kimio Inoue, Tomohisa Isobe, Naoki Nakashima, Takuya Miho, Yoshiyuki Ikemoto
  • Patent number: 4663429
    Abstract: A process for producing a lactone polymer which comprises reacting an ester compound synthesized from an alcohol and an acid or acid anhydride thereof with a lactone and a ring-opening polymerization initiator without being accompanied by condensation. The thus produced lactone polymer is effective for preventing shrinkage of thermosetting resins, particularly unsaturated polyester resins.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: May 5, 1987
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Shoji Watanabe, Kimio Inoue, Tomohisa Isobe, Naoki Nakashima, Takuya Miho, Yoshiyuki Ikemoto
  • Patent number: 4565859
    Abstract: A polyether compound having ether groups and vinyl double bonds represented by formula (I) ##STR1## wherein R.sub.1 represents a residue of an organic compound having l active hydrogen atoms, n.sub.1 through n.sub.l each represents 0 or an integer of from 1 to 100, the sum of the integers represented by n.sub.1 through n.sub.l is from 1 to 100, andl represents an integer of from 1 to 100, and A represents ##STR2## and a process for production thereof; an epoxy resin represented by formula (II) ##STR3## wherein R.sub.1 and n.sub.1 through n.sub.l are defined above, and B is an oxycyclohexane unit having a substituent and is represented by formula (III) ##STR4## wherein X represents a ##STR5## --CH.dbd.CH.sub.2, or ##STR6## groups, wherein R.sub.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: January 21, 1986
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takaaki Murai, Shoji Watanabe, Kimio Inoue, Toyokazu Yagii
  • Patent number: 4475998
    Abstract: A lactone-modified epoxy (meth)acrylate resin is disclosed as is a hardenable resin composition which includes the lactone-modified epoxy resin. The lactone-modified epoxy (meth)acrylate resin is obtained by addition polymerizing 3 to 95 parts by weight of a lactone to 97 to 5 parts by weight of an epoxy (meth)acrylate resin at the whole or a part of the secondary hydroxy groups thereof. The hardenable resin composition comprises (A) 5 to 95 parts by weight of the above referred to lactone-modified epoxy (meth)acrylate resin, (B) 95 to 5 parts by weight of a vinyl compound having an ethylenically unsaturated bond, and (C) 0 to 10 parts by weight of a photosensitizer.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: October 9, 1984
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kiyoshi Okitsu, Takaaki Murai
  • Patent number: D295385
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: April 26, 1988
    Assignee: Seiko Instruments Inc.
    Inventors: Takashi Watanabe, Takaaki Murai