Patents by Inventor Katsuhiko Isayama
Katsuhiko Isayama 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: 4904745Abstract: A polyalkylene oxide having unsaturated end groups. The polymer has a distribution of molecular weight Mw/Mn of not more than 1.5, and a process for the same. The polymer is useful as rubber materials, and can provide cured rubber having an excellent elongation.Type: GrantFiled: March 14, 1988Date of Patent: February 27, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Shohei Inoue, Takuzo Aida, Michihide Honma, Katsuhiko Isayama
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Patent number: 4904732Abstract: An isobutylene polymer having at least one silicon-containing group cross-linkable by the formation of a siloxane bond. The isobutylene polymer is a novel polymer curable at ordinary temperature and has not only excellent weatherability, water-resistance and heat-resistance but also excellent electric isolation and gas impermeability.Type: GrantFiled: June 24, 1987Date of Patent: February 27, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Takahisa Iwahara, Koji Noda, Katsuhiko Isayama
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Patent number: 4902575Abstract: A method of coating the cured product of an oxyalkylene polymer having reactive silicon groups with an alkyd paint. The oxyalkylene polymer is combined with a high-molecular weight plasticizer and the composition is cured and the cured product coated with an alkyd paint.Type: GrantFiled: December 22, 1988Date of Patent: February 20, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Sadao Yukimoto, Toshifumi Hirose, Katsuhiko Isayama
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Patent number: 4900772Abstract: A curable resin composition comprising(A) 100 parts by weight of an elastomeric organic polymer of a saturated hydrocarbon having at least one silicon-containing group cross-linkable by the formation of a siloxane bond at the molecular ends, and(B) 0.01 to 10 parts by weight of a sulfur-containing antioxidant. The curable resin composition produces a cured product having excellent heat resistance.Type: GrantFiled: April 11, 1988Date of Patent: February 13, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayoshi Imanaka, Koji Noda, Katsuhiko Isayama
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Patent number: 4870144Abstract: Isobutylene polymers having functional terminal end groups are prepared by polymerizing a cationic polymerizable monomer containing isobutylene by using:(A) as an initiator and chain transfer agent, an organic compound represented by the general formula (I): ##STR1## where X represents a halogen atom or RCOO-- group (in which R represents a hydrogen atom or a monovalent organic group), R.sup.3 represents a (n+1)-valent hydrocarbon group, R.sup.1, R.sup.2 represent respectively hydrogen atom or monovalent hydrocarbon group, R.sup.1 and R.sup.2 may be identifical or different with each other, R.sup.1 and R.sup.2 are not hydrogen atom in a case while R.sup.3 is an aliphatic hydrogen group, n is a positive integer;(B) as a catalyst, a Lewis acid; and(C) as a solvent, a hydrocarbon or halogenated hydrocarbon containing an organonitro compound.Type: GrantFiled: February 19, 1988Date of Patent: September 26, 1989Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Kouji Noda, Masayoshi Imanaka, Katsuhiko Isayama
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Patent number: 4837401Abstract: A curable polymer composition comprising(A) 100 parts by weight of an organic polymer having at least one silicon-containing reactive group of the formula: ##STR1## wherein R.sup.1 is, the same or different, a C.sub.1 -C.sub.20 monovalent hydrocarbon group or a triorganosiloxy group of the formula:(R').sub.3 SiO-- (II)in which R' is, the same or different, a C.sub.1 -C.sub.20 monovalent hydrocarbon group; X is a hydroxyl group or a hydrolyzable group provided that when the number of Xs in the group (I) is at least 2, Xs are the same or different; a is 0, 1, 2 or 3; b is 0, 1 or 2; and m is an integer of 1 to 18, and(B) 0.01 to 10 parts by weight of a curing catalyst selected from the compounds of the formulas: ##STR2## wherein Q is a C.sub.1 -C.sub.20 monovalent hydrocarbon group; and Z is, the same or different, a C.sub.1 -C.sub.Type: GrantFiled: December 11, 1985Date of Patent: June 6, 1989Assignee: Kanegafuchi Chemical Industry, Co., Ltd.Inventors: Toshifumi Hirose, Sadao Yukimoto, Katsuhiko Isayama
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Patent number: 4788254Abstract: A moisture curable polymer composition comprising (A) an organic polymer having at least one reactive silicone group in a molecule and (B) a compound having one silanol group in a molecule and/or a compound which reacts with water or moisture to form a compound having one silanol group in a molecule, which is cured with moisture to give an elastomeric material with improved tensile properties and surface characteristics.Type: GrantFiled: July 13, 1987Date of Patent: November 29, 1988Assignee: Kanegafuchi Chemical Industry, Co., Ltd.Inventors: Fumio Kawakubo, Sadao Yukimoto, Miyako Takanoo, Katsuhiko Isayama, Takahisa Iwahara
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Patent number: 4774356Abstract: Polypropylene oxide having unsaturated end groups is prepared by polymerizing alkylene oxide in the presence of a complex catalyst prepared by reacting an organoaluminum compound with a porphyrin compound and an active hydrogen-containing compound and converting at least one hydroxyl end groups into an unsaturated end group(s), the prepared polymer having a narrow distribution of molecular weight.Type: GrantFiled: March 24, 1986Date of Patent: September 27, 1988Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Shohei Inoue, Takuzo Aida, Michihide Honma, Katsuhiko Isayama
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Patent number: 4735829Abstract: A process for preparing a pressure sensitive adhesive comprising:(A) an organic polymer having in its molecule at least one reactive silicon-containing group represented by the formula (I): ##STR1## wherein R.sup.2 is a monovalent hydrocarbon group having 1 to 20 carbon atoms or a triorganosiloxy group having the formula (II):(R').sub.3 SiO-- (II)in which R' is a monovalent hydrocarbon group having 1 to 20 carbon atoms and may be the same or different, X is hydroxyl group or a hydrolyzable group, and may be the same or different when 2 or more X groups are attached, a is 0 or an integer of 1 to 3, b is 0, 1 or 2, and m is 0 or an integer of 1 to 18, and(B) 0.1 to 20 parts by weight of, per 100 parts by weight of the organic polymer, at least one curing catalyst selected from the group consisting of an organic aluminium and an organic zirconium. The composition has excellent heat resistance and releasability from substrates, e.g. a release paper coated with a silicone release agent.Type: GrantFiled: March 10, 1987Date of Patent: April 5, 1988Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Toshifumi Hirose, Katsuhiko Isayama
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Patent number: 4707526Abstract: A tackifier composition comprising, as essential compontents, (a) 100 parts by weight of a polyether having at least one reactive silicon group;(b) from 10 to 140 parts by weight of a phenolic hydroxyl group-containing cyclopentadiene resin which is obtained by copolymerization of 100 parts by weight of at least one component A selected from the group consisting of five-membered ring compounds of the following general formula having conjugated double bonds, and Diels-Alder reaction adducts thereof, ##STR1## in which H is a hydrogen atom, R is an alkyl group having from 1 to 3 carbon atoms, and m and n are each an integer of 0 or at least 1 provided that m+n=6, with 5 to 200 parts by weight of at least one component B selected from the group consisting of monohydric and polyhydric phenols and alkyl-substituted products thereof; and(c) from 0.1 to 10 parts by weight of a curing catalyst.Type: GrantFiled: March 24, 1987Date of Patent: November 17, 1987Assignees: Nippon Oil Co., Ltd., Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Makoto Sasaki, Masaki Yamakawa, Toshifumi Hirose, Katsuhiko Isayama
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Patent number: 4687818Abstract: A novel moisture-curable polymer useful as a pressure sensitive adhesive, a paint, a sealant, etc. obtained by polymerizing a polymerizable monomer in the presence of an organic polymer having at least one reactive silicon-containing functional group in the molecule on the average. A pressure sensitive adhesive composition having excellent adhesive property as well as excellent initial tackiness, heat resistance, workability and weather resistance comprising a polymer obtained by polymerizing a polymerizable monomer in the presence of (A) an organic polymer having at least one reactive silicon functional group in the molecule on the average and/or (B) an organic polymer having at least one olefin group in the molecule on the average. The composition is also useful as a sealant, a coating material, a packing, an electric insulation, a corrosionproof, a masking and a surface-protection.Type: GrantFiled: July 29, 1985Date of Patent: August 18, 1987Assignee: Kanegafuchi Kogaku Kabushiki KaishaInventors: Fumio Kawakubo, Miyako Takanoo, Sadao Yukimoto, Katsuhiko Isayama
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Patent number: 4665127Abstract: A pressure sensitive adhesive composition comprising:(A) an organic polymer having in its molecule at least one reactive silicon-containing group represented by the formula (I): ##STR1## wherein R.sup.2 is a monovalent hydrocarbon group having 1 to 20 carbon atoms or a triorganosiloxy group having the formula (II):(R').sub.3 SiO-- (II)in which R' is a monovalent hydrocarbon group having 1 to 20 carbon atoms and may be the same or different, X is hydroxyl group or a hydrolyzable group, and may be the same or different when 2 or more X groups are attached, a is O or an integer of 1 to 3, b is 0, 1 or 2, and m is O or an integer of 1 to 18, and(B) 0.1 to 20 parts by weight of, per 100 parts by weight of the organic polymer, at least one curing catalyst selected from the group consisting of an organic aluminum and an organic zirconium. The composition has excellent heat resistance and releasability from substrates, e.g. a release paper coated with a silicone release agent.Type: GrantFiled: August 29, 1985Date of Patent: May 12, 1987Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Toshifumi Hirose, Katsuhiko Isayama
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Patent number: 4657986Abstract: A curable resinous composition comprising:(A) an organic elastomeric polymer having at least one silicon-containing reactive group in a molecule,(B) an epoxy resin,(C) a silicone compound having a silicon-containing group and a functional group reactive with an epoxy group, and(D) a curing agent for the epoxy resin, wherein said silicon-containing reactive group is a group of the formula: ##STR1## wherein X is a hydroxyl group or a hydrolyzable group, R.sup.1 is a monovalent hydrocarbon group having 1 to 20 carbon atoms or an organosiloxy group, "a" is 0, 1, 2, or 3, "b" is 0, 1 or 2 provided that the total of "a" and "b" is at least 1, and "m" is 0 or an integer of 1 to 18, a weight ratio of (A) to (B) being from 1:100 to 100:1 and a weight ratio of (A)+(B) to (C) being from 100:0.1 to 100:20.Type: GrantFiled: December 23, 1985Date of Patent: April 14, 1987Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Katsuhiko Isayama, Toshifumi Hirose, Takahisa Iwahara, Fumio Kawakubo
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Patent number: 4631322Abstract: A curable composition comprising (A) a phenol resin and (B) 1 to 200 parts by weight of, per 100 parts by weight of the phenol resin, a polyether having at least one silicon-containing reactive group, which provides a cured product having improved properties such as flexibility, impact resistance, toughness, peeling strength and tensile strength.Type: GrantFiled: April 8, 1985Date of Patent: December 23, 1986Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Katsuhiko Isayama, Toshifumi Hirose, Takahisa Iwahara, Fumio Kawakubo
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Patent number: 4618656Abstract: A polymer which is prepared by polymerizing at least one ethylenically unsaturated monomer in the presence of an organic polymer having at least one reactive silicone group in a molecule and a compound having at least two independent ethylenically unsaturated functional groups in a molecule by use of a radical polymerization initiator having a reactive silicone group and/or a chain transfer agent having a reactive silicone group, which is cured with moisture to give a product having improved properties such as tensile properties and weather resistance.Type: GrantFiled: April 25, 1985Date of Patent: October 21, 1986Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Fumio Kawakubo, Miyako Takanoo, Sadao Yukimoto, Katsuhiko Isayama
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Patent number: 4618653Abstract: A polymer which is prepared by polymerizing at least one polymerizable monomer in the presence of an organic polymer having a reactive silicone group and a polymerizable ethylenically unsaturated group in a molecule, the total number of the silicone group and the unsaturated group being on the average not less than 1.1 and the number of the ethylenically unsaturated group being on the average not less than 0.1 by use of a radical polymerization initiator having a reactive silicone group and/or a chain transfer agent having a reactive silicone group, which is cured with moisture to give a product having improved properties such as tensile properties and weather resistance.Type: GrantFiled: April 25, 1985Date of Patent: October 21, 1986Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Fumio Kawakubo, Miyako Takanoo, Sadao Yukimoto, Katsuhiko Isayama
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Patent number: 4593068Abstract: A curing composition which comprises (A) a polyether having at least one reactive silicon-containing group in the molecule and (B) an acrylate polymer and/or an methacrylate polymer. The composition of the present invention has excellent weatherability, adhesive property, initial tackiness, especially at a low temperature, cohesive force, workability and stickness and is useful as a pressure sensitive adhesive, a sealing material, and the like.Type: GrantFiled: October 18, 1983Date of Patent: June 3, 1986Assignee: Kanegafushi Kagaku Kogyo Kabushiki KaishaInventors: Toshifumi Hirose, Katsuhiko Isayama
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Patent number: 4543403Abstract: A moisture curable composition comprising an acrylate or methacrylate polymer having a silicon functional group capable of causing crosslinking or chain extension by moisture, at least in molecular ends, and being useful particularly as a sealing material and a pressure sensitive adhesive, said polymer being prepared by polymerizing (a) an alkyl acrylate or methacrylate or a monomer mixture of at least 50% by weight of the alkyl acrylate or methacrylate and other unsaturated compounds copolymerizable therewith and (b) 0 to 20 parts of .alpha.,.beta.-ethylenically unsaturated organic silicon compound in the presence of (c) 0.01 to 20 parts of a radical polymerization initiator having a group of the general formula: ##STR1## wherein R.sup.Type: GrantFiled: March 9, 1984Date of Patent: September 24, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Katsuhiko Isayama, Toshifumi Hirose, Fumio Kawakubo
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Patent number: 4513061Abstract: A primer composition utilizable on glass surfaces, comprising a film forming component and an ultraviolet light absorbing component, and capable of shielding light having wavelengths of 380 nm or less. The primer composition protects curable compositions coated on top of the primer from adverse weather effects, such as on adhesion properties of the curable compositions onto a glass surface, the adhesion being maintained for substantially long periods of time.Type: GrantFiled: September 23, 1982Date of Patent: April 23, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Fumio Kawakubo, Toshifumi Hirose, Tadashi Minokami, Miyako Hosaka, Katsuhiko Isayama
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Patent number: 4507469Abstract: A curable composition comprising an organic polymer containing at least one hydrolyzable a group attached to the silicon per polymer molecule and having a molecular weight within the range of 300 to 15,000, wherein a curing catalyst comprising tin II salt of organic carboxylic acid and/or lead II salt of organic carboxylic acid is used in combination with an acid material and/or a basic material, thereby unexpectedly improving the set resistance thereof. The composition may be utilized as a sealant which cures upon exposure to moisture to form a rubber like substance having improved set resistance.Type: GrantFiled: November 8, 1983Date of Patent: March 26, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Tetsuo Mita, Hirotazu Nakanishi, Junji Takase, Katsuhiko Isayama, Nobutaka Tani