Patents by Inventor Junji Takase
Junji Takase 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).
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Patent number: 7297743Abstract: The object of the present invention is to significantly improve weather resistance over a long period of time of the cured product of the invention, while maintaining physical properties, such as tensile properties and rubber-like elasticity, at levels required of sealing compositions for use in general buildings. The curable composition of the invention is a curable composition which comprises a vinyl polymer having a reactive silicon containing group (a), such as a (meth) acrylic polymer having a reactive silicon containing group, a polyoxyalkylene polymer having a reactive silicon containing group (b), such as a polyoxypropylene having a reactive silicon containing group, and a plasticizer having an acrylic component (c), such as an acrylic polymer, and is reacted and crosslinked in the presence of moisture to provide a rubbery cured product.Type: GrantFiled: April 19, 2002Date of Patent: November 20, 2007Assignee: Kaneka CorporationInventors: Yuka Kanamori, Junji Takase
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Publication number: 20070184290Abstract: The present invention provides a method of bonding an adherend to a substrate which comprises applying a curable composition comprising at least one polymer or resin selected from the group consisting of (A) a reactive silyl group-containing polyoxyalkylene polymer, (B) a reactive silyl group-containing saturated hydrocarbon polymer, (C) a copolymer of which molecular chain is substantially made of one or more alkyl acrylate monomer unit(s) and/or alkyl methacrylate monomer unit(s) and (D) an epoxy resin and having a viscosity before curing of not lower than 10,000 Pa·s as determined on a B8U type viscometer under the following condition; rotor No. 7; number of revolutions 0.5 rpm; in an atmosphere at 23° C., according to JIS K 7117 to the adherend and/or substrate and then joining the adherend and the substrate together without temporary tacking.Type: ApplicationFiled: January 19, 2007Publication date: August 9, 2007Inventors: Katsuhiro Ando, Junji Takase, Fumio Kawakubo
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Patent number: 7182833Abstract: By using a high viscosity moisture-curable adhesive composition comprising at least one polymer or resin selected from the group consisting of (A) a reactive silyl group-containing polyoxyalkylene polymer, (B) a reactive silyl group-containing saturated hydrocarbon polymer, (C) a copolymer of which molecular chain is substantially made of one or more alkyl (meth)acrylate monomer unit(s) and (D) an epoxy resin, it becomes possible to bond an adherend to a substrate without open time and without temporary tacking after application.Type: GrantFiled: April 27, 2001Date of Patent: February 27, 2007Assignee: Kaneka CorporationInventors: Katsuhiro Ando, Junji Takase, Fumio Kawakubo
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Patent number: 7153911Abstract: The invention provides a curable composition which comprises a polyoxyalkylene polymer having a reactive silicon group and a (meth)acrylate copolymer and exhibits excellent weather resistance for a prolonged period. This composition comprises 100 parts by weight of a polyoxyalkylene polymer (A) having at least one silicon-containing functional group capable of causing crosslinking through the formation of a siloxane linkage and 20 to 1000 parts by weight of a (meth)acrylate copolymer (B) having a hindered amine structure.Type: GrantFiled: November 29, 2002Date of Patent: December 26, 2006Assignee: Kaneka CorporationInventors: Ayako Yano, Junji Takase
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Patent number: 7115695Abstract: A curable composition is characterized by comprising an organic polymer having at least one silicon-containing group which has a hydroxy or hydrolyzable group bonded to the silicon atom and which is crosslinkable by forming siloxane bonds, and a specific metal salt of a carboxylic acid. The composition ensures practical curability and recovery properties and has mechanical properties including high strength and high elongation.Type: GrantFiled: July 5, 2002Date of Patent: October 3, 2006Assignee: Kaneka CorporationInventors: Toshihiko Okamoto, Masashi Sakaguchi, Sadao Yukimoto, Katsuyu Wakabayashi, Junji Takase, Hiroshi Ando
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Publication number: 20040266950Abstract: The invention provides a curable composition which comprises a polyoxyalkylene polymer having a reactive silicon group and a (meth)acrylate copolymer and exhibits excellent weather resistance for a prolonged period. This composition comprises 100 parts by weight of a polyoxyalkylene polymer (A) having at least one silicon-containing functional group capable of causing crosslinking through the formation of a siloxane linkage and 20 to 1000 parts by weight of a (meth)acrylate copolymer (B) having a hindered amine structure.Type: ApplicationFiled: May 17, 2004Publication date: December 30, 2004Inventors: Ayako Yano, Junji Takase
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Publication number: 20040198885Abstract: A curable composition is characterized by comprising an organic polymer having at least one silicon-containing group which has a hydroxy or hydrolyzable group bonded to the silicon atom and which is crosslinkable by forming siloxane bonds, and a specific metal salt of a carboxylic acid. The composition ensures practical curability and recovery properties and has mechanical properties including high strength and high elongation.Type: ApplicationFiled: January 6, 2004Publication date: October 7, 2004Inventors: Toshihiko Okamoto, Masashi Sakaguchi, Sadao Yukimoto, Katsuyu Wakabayashi, Junji Takase, Hiroshi Ando
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Publication number: 20040176518Abstract: The invention provides a primer composition excellent in adhesion to porous substrates and a method of bonding.Type: ApplicationFiled: November 20, 2003Publication date: September 9, 2004Inventors: Toshihiko Okamoto, Kazuo Hagiwara, Junji Takase
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Publication number: 20040127631Abstract: The object of the present invention is to significantly improve weather resistance over a long period of time of the cured product of the invention, while maintaining physical properties, such as tensile properties and rubber-like elasticity, at levels required of sealing compositions for use in general buildings.Type: ApplicationFiled: January 15, 2004Publication date: July 1, 2004Inventors: Yuka Kanamori, Junji Takase
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Publication number: 20040074598Abstract: The present invention provides a method of bonding an adherend to a substrateType: ApplicationFiled: February 10, 2003Publication date: April 22, 2004Inventors: Katsuhiro Ando, Junji Takase, Fumio Kawakubo
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Patent number: 6624260Abstract: By using a curable composition comprising, (A) per 100 parts by weight of an epoxy resin, (B) from 1 to 50 parts by weight of a reactive silicon group-containing polyoxyalkylene polymer, and (C) from 1 to 90 parts by weight of a curing agent for epoxy resins, the working properties of an existing rubber-modified epoxy resin are improved to thereby give stable adhesion properties (for example, improved peel strength) without worsening the shear strength.Type: GrantFiled: April 13, 2001Date of Patent: September 23, 2003Assignee: Kaneka CorporationInventors: Katsuhiro Ando, Junji Takase, Fumio Kawakubo
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Patent number: 6576082Abstract: The present invention provides a primer composition comprising (A) a vinyl polymer having a main chain substantially comprising vinyl copolymer chain and at least one silicon-containing group having a hydroxy group or a hydrolyzable group bonded to a silicon atom and capable of crosslinking by forming a siloxane bond at the terminal end of the main chain and/or side chain, and (B) (a) a saturated hydrocarbon polymer having at least one silicon-containing group having a hydroxy group or a hydrolyzable group bonded to a silicon atom and capable of crosslinking by forming a siloxane bond, and/or (b) a polybutadiene polymer having at least one silicon containing group having a hydroxy group or a hydrolyzable group bonded to a silicon atom and capable of crosslinking by forming a siloxane bond, which can remarkably improve the adhesion to various kinds of substrates, and which is particularly useful when applied to the isobutylene series sealing material.Type: GrantFiled: March 8, 2001Date of Patent: June 10, 2003Assignee: Kaneka CorporationInventors: Toshihiko Okamoto, Junji Takase
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Patent number: 6451439Abstract: A primer composition showing good adhesion to the surface of a substrate, such as a glass substrate, and excellent in weather resistance and water resistance as well as a method of effecting adhesion is provided. The primer composition is characterized by comprising a saturated hydrocarbon polymer having at least one silicon-containing group which has hydroxyl or hydrolyzable group bound to the silicon atom and capable of crosslinking under formation of a siloxane bond.Type: GrantFiled: March 30, 2001Date of Patent: September 17, 2002Assignee: Kaneka CorporationInventors: Toshihiko Okamoto, Makoto Chiba, Junji Takase
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Patent number: 6426392Abstract: This invention is related to a thermoplastic crosslinked product obtainable by the crosslinking reaction of a composition comprising (A) a polymer having a silicon-containing group and (B) a tetravalent tin compound, said silicon-containing group having a hydrolyzable group bound to a silicon atom and capable of crosslinking through formation of a siloxane bond.Type: GrantFiled: May 30, 2000Date of Patent: July 30, 2002Assignee: Kaneka CorporationInventors: Makoto Chiba, Junji Takase
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Publication number: 20020016411Abstract: By using a curable composition comprising, (A) per 100 parts by weight of an epoxy resin, (B) from 1 to 50 parts by weight of a reactive silicon group-containing polyoxyalkylene polymer, and (C) from 1 to 90 parts by weight of a curing agent for epoxy resins, the working properties of an existing rubber-modified epoxy resin are improved to thereby give stable adhesion properties (for example, improved peel strength) without worsening the shear strength.Type: ApplicationFiled: April 13, 2001Publication date: February 7, 2002Inventors: Katsuhiro Ando, Junji Takase, Fumio Kawakubo
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Patent number: 6335412Abstract: The present invention provides a curable composition comprising a reactive silicon group-containing saturated hydrocarbon polymer which features a high curing rate and a high degree of adhesiveness to various adherends. This invention is relates to a curable composition which comprises (A) a saturated hydrocarbon polymer having at least one silicon-containing group containing a hydroxyl or hydrolyzable group bound to the silicon atom and capable of forming a siloxane bond, (B) a tetravalent tin compound, and (C) a silicon compound of the general formula (1) R1aSi(OR2)4-a (1) wherein R1 and R2 each independently represents a substituted or unsubstituted hydrocarbon group containing 1 to 20 carbon atoms; a represents any of 0, 1, 2 and 3.Type: GrantFiled: April 26, 2000Date of Patent: January 1, 2002Assignee: Kaneka CorporationInventors: Toshihiko Okamoto, Makoto Chiba, Junji Takase
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Publication number: 20010053806Abstract: It is an object of the present invention to provide a curable composition comprising a crosslinking silyl-containing saturated hydrocarbon polymer and providing good weather-resistant adhesion.Type: ApplicationFiled: December 3, 1998Publication date: December 20, 2001Inventors: MAKOTO CHIBA, TOSHIHIKO OKAMOTO, MASASHI SAKAGUCHI, JUNJI TAKASE
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Publication number: 20010047056Abstract: A primer composition showing good adhesion to the surface of a substrate, such as a glass substrate, and excellent in weather resistance and water resistance as well as a method of effecting adhesion is provided. The primer composition is characterized by comprising a saturated hydrocarbon polymer having at least one silicon-containing group which has hydroxyl or hydrolyzable group bound to the silicon atom and capable of crosslinking under formation of a siloxane bond.Type: ApplicationFiled: March 30, 2001Publication date: November 29, 2001Applicant: Kaneka CorporationInventors: Toshihiko Okamoto, Makoto Chiba, Junji Takase
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Publication number: 20010031315Abstract: The present invention provides a primer composition comprisingType: ApplicationFiled: March 8, 2001Publication date: October 18, 2001Applicant: Kaneka CorporationInventors: Toshihiko Okamoto, Junji Takase
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Patent number: 6183551Abstract: A curable resin composition containing (A) a saturated hydrocarbon polymer having at least one reactive silicon-containing group in a molecule, and (B) a hydrogenated oligomer of an &agr;-olefin, or a curable resin composition containing (A) a saturated hydrocarbon polymer having at least one reactive silicon-containing group in a molecule, (C) a saturated hydrocarbon oligomer, and (D) an ester plasticizer, both of which have good workability, in particular, at low temperature.Type: GrantFiled: October 31, 1997Date of Patent: February 6, 2001Assignee: Kaneka CorporationInventors: Toshihiko Okamoto, Kazuo Hagiwara, Makoto Chiba, Masashi Sakaguchi, Junji Takase