Patents by Inventor Toshifumi Hirose
Toshifumi Hirose 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: 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: 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: 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: 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: 4496611Abstract: A method of improving weather resistant adhesion of curable composition on a glass surface, encompassing use of 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 composition onto a glass surface, the adhesion being maintained for substantially long periods of time.Type: GrantFiled: September 23, 1982Date of Patent: January 29, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Fumio Kawakubo, Toshifumi Hirose, Tadashi Minokami, Miyako Hosaka, Katsuhiko Isayama
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Patent number: 4463115Abstract: A pressure sensitive adhesive composition comprising (A) a polyether having at least one silicon-containing hydrolyzable group, having an average molecular weight of 300 to 30,000 and having a principal chain which is essentially constructed with the chemically bonded recurring units:--R.sup.1 --O--wherein R.sup.1 is a divalent alkylene group and (B) a tackifier; said tackifier being admixed with the polyether in an amount of 10 to 140 parts by weight per 100 parts by weight of said polyether. From the composition a pressure sensitive adhesive product having good adhesive properties can be prepared substantially without a solvent.Type: GrantFiled: October 7, 1983Date of Patent: July 31, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Toshifumi Hirose, Katsuhiko Isayama
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Patent number: 4444974Abstract: A room temperature curing composition comprising a polyoxyalkylene polymer having a silicon-containing hydrolyzable group and a hydrolyzable silicon compound as a stabilizer, which is stable in a closed system and is curable by exposure to moisture. The stabilizer has a higher hydrolysis reactivity than the polyoxyalkylene polymer and serves as a dehydrating agent, and therefore the storage stability can be remarkably improved.Type: GrantFiled: December 6, 1982Date of Patent: April 24, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Junji Takase, Toshifumi Hirose, Katsuhiko Isayama