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1. 发明专利

JPH07280168A IRON PIPE OR THE LIKE COATED WITH SOLVENT FREE TWO-LIQUID TYPE URETHANE COATING COMPOSITION 失效
公开(公告)号：JPH07280168A
公开(公告)日：1995-10-27
申请号：JP8772294
申请日：1994-03-31
申请人： KURIMOTO LTD , DAINIPPON INK & CHEMICALS
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , SAITO MASAHIKO , AOKI NOBUO , YAMAMOTO KEN , OGOSHI NOBORU , OTSUBO MITSURU
IPC分类号： C08G18/10 , C08G18/61 , C09D175/00 , C09D175/04 , F16L57/00 , F16L58/10
摘要： PURPOSE:To provide iron pipes, etc., to be coated with the coating which is harmless and safe for the human body in coating, and whose coating film is fine and highly corrosion l resistant after coating. CONSTITUTION:Iron pipes, etc., are coated with the solvent-free two-liquid type urethane coating where the isocyanate polyplimer (A) in which the compound (a) having the poly-siloxane structure containing the active hydrogen to be reacted with at least two isocyanate radicals and the isocyanate (b) are reacted, and the compound (B) containing the active hydrogen. This coating is harmless and free from any problems on the labor and health, and forms the coated film which generates less foaming in the coating, and is fine and hard. This coating is characteristic in that the water absorption is small, and the water permeability during the use is absent, and the pipe line which is reliable for a long time can be maintained.

2. 发明专利

JP2001271987A METHOD OF LINING METAL PIPE OR METAL VALVE WITH URETHANE ELASTOMER 失效
公开(公告)号：JP2001271987A
公开(公告)日：2001-10-05
申请号：JP2000085142
申请日：2000-03-24
申请人： KURIMOTO LTD , DAINIPPON INK & CHEMICALS
发明人： MICHIURA YOSHISADA , AOKI NOBUO , SAITO MASAHIKO , DEGUCHI TAKAAKI , YAMAMOTO FUMIO
IPC分类号： F16L58/10 , B05D1/36 , B05D7/22 , B05D7/24
摘要： PROBLEM TO BE SOLVED: To provide a method of lining a metal pipe or a metal valve with an urethane elastomer capable of shortening a manufacturing process, and preventing uneven application, and excellent in ordinary joint strength, water resisting joint strength and appearance after a water conveyance test by free carbon dioxide water. SOLUTION: This method for lining the metal pipe or the metal valve with urethane elastomer is characterized in that epoxy resin powder coating as a primer is applied to the inner surface of the metal pipe or metal valve, and then a double-fluid hardening type urethane elastomer stock solution is applied thereon and hardened. In the lining method for the metal pipe or the metal valve, preferably the epoxy resin powder used as the primer is epoxy resin powder coating containing epoxy resin having a softening point of 60 to 150 deg.C and epoxy equivalent of 400 to 3,000 a hardener for hardening the resin, and a pigment mixed at need, and preferably the formed coat thickness of the epoxy resin powder used as the primer is 40 to 200 μm.

3. 发明专利

JPH05220451A LINING METHOD OF METAL PIPE OR METAL VALVE WITH URETHANE ELASTOMER 失效
公开(公告)号：JPH05220451A
公开(公告)日：1993-08-31
申请号：JP2850892
申请日：1992-02-14
申请人： DAINIPPON INK & CHEMICALS , KURIMOTO LTD
发明人： TAMURA YUJI , YAMAMOTO FUMIO , KURODA SHIGEYOSHI , KITAGAWA MASAYOSHI , MATSUNAGA JUNJI , AOKI NOBUO , TAKADA NOBUHIDE
IPC分类号： B05D1/38 , B05D7/22 , B05D7/24 , F16L57/00 , F16L58/10
摘要： PURPOSE:To provide a lining method of a metal pipe or a metal valve with urethane elastomer wherein the metal pipe and the metal valve have high wear resistance, corrosion resistance, water proofness, and excellent initial adhesion property. CONSTITUTION:At first, as a primary primer, a primer containing polyvinyl butyral as a main component is applied to the inner face of a metal pipe or a metal valve and dried. Further as a secondary primer, a polyurethane based primer containing isocyanate group is applied and dried. Then, two liquid hardening-type polyurethane elastomer raw liquid is applied thereon by a pouring method or a spraying method and cured.

4. 发明专利

JPH05220452A METAL PIPE AND METAL VALVE LINED WITH URETHANE 失效
公开(公告)号：JPH05220452A
公开(公告)日：1993-08-31
申请号：JP2850992
申请日：1992-02-14
申请人： DAINIPPON INK & CHEMICALS , KURIMOTO LTD
发明人： TAMURA YUJI , YAMAMOTO FUMIO , KURODA SHIGEYOSHI , KITAGAWA MASAYOSHI , MATSUNAGA JUNJI , AOKI NOBUO , TAKADA NOBUHIDE
IPC分类号： B05D1/38 , B05D7/22 , B05D7/24 , F16L57/00 , F16L58/10
摘要： PURPOSE:To provide a pipe or valve lined with urethane wherein the pipe and the valve are highly corrosion-resistant, wear-resistant, and waterproof and suitable for transporation of earth and sand, ores, etc. CONSTITUTION:As a primary primer, a primer layer 2 containing polyvinyl butyral as a main component is formed in the inner face of a metal pipe 1 or a metal valve and on the layer an isocyanate group-containing polyurethane- based primer layer 3 as a secondary primer is formed and the layer is lined with a two liquid hardening-type polyurethane elastomer 4. As a result, the initial adhesiveness is improved and the manufacturing labor is saved and without damaging the excellent properties of the polyurethane resin, water-proof adhesiveness is improved.

5. 发明专利

JPH09279055A LINING MATERIAL FOR PIPE INTERIOR COATING 失效
公开(公告)号：JPH09279055A
公开(公告)日：1997-10-28
申请号：JP9233596
申请日：1996-04-15
申请人： KURIMOTO LTD , KANSAI PAINT CO LTD
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , OTSU HIDEKI , YAMAMOTO KEN , AOKI NOBUO , NAGATANI TOSHIKAZU , TSURUMOTO OSAMU , NANBA TOSHIO , YAMATO HIROFUMI
IPC分类号： C09D4/00 , C09D4/02 , C09D167/00 , C09D167/06 , C09D171/00
摘要： PROBLEM TO BE SOLVED: To reduce the cure shrinkage of a lining material for pipe interior coating by compounding an unsatd. polyester resin, an unsatd. polymerizable monomer, a peroxide initiator, a (meth)acryloylated styrene macromonomer, and specific flat particles. SOLUTION: Component A is prepd. by compounding 100 pts.wt. unsatd. polyester resin having a number average mol.wt. of about 1,000-50,000, a hydroxyl value of 5-100mgKOH/g, an acid value of 5-30mgKOH/g, and an unsaturation equivalent of 100-1,000 with 5-200 pts.wt. unsatd. polymerizable monomer (e.g. acrylic acid or styrene), 1-40 pts.wt. (meth)acryloylated styrene macromonomer having a number average mol.wt. of about 1,000-10,000, 10-500 pts.wt. flat particles having a length of 80μm or lower (e.g. silica or talc), about 0.5-10 pts.wt. cure catalyst, and a solvent. Component B is prepd. by the same formulation except that it does not contain the catalyst and contains 0.1-20 pts.wt. peroxide initiator. A lining material for pipe interior coating is obtd. by mixing components A and B just before being used.

6. 发明专利

JPH08299858A METHOD FOR AUTOMATIC CIRCULATION TYPE POWDER COATING OF PREHEATED MATERIAL TO BE COATED AND APPARATUS THEREFOR 失效
公开(公告)号：JPH08299858A
公开(公告)日：1996-11-19
申请号：JP13592995
申请日：1995-05-08
申请人： KURIMOTO LTD , KOOTEMU KK
发明人： SAITO MASAHIKO , AOKI NOBUO , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , IWAKI HISASHI , MITSUI MIKIO , TANI HIROTAKA , KANOU KIMIYA , HASHIMOTO YUJI
IPC分类号： B05B15/04 , B05B5/08
摘要： PURPOSE: To develop a method and apparatus in which in electrostatic powder coating of a preheated material to be coated, excessive powder (overspray paint) produced by scattering and dropping is regenerated effectively and mixed uniformly with new powder in an optional ratio to prepare proper coating powder, and the mixture is circulated automatically to be used. CONSTITUTION: The objective apparatus is composed of a recovery tank 3 for recovering excessive powder under a coating both 2, a recovered powder cleaner 4 which performs cracking, foreign matter removing, and iron removing continuously to make a recovered cleaning body Q, a new powder supply apparatus 5 which is installed separately, a powder mixing apparatus 6 in which new powder and recovered powder are mixed in an optional ratio to prepare uniform coating powder, a powder supplying apparatus 7 which pneumatically sends an optional amount of the coating powder to each electrostatic gun, and a controller which controls time and the length of time to synchronize apparatuses and actuations common to the apparatuses.

7. 发明专利

JPH0392611A BOLT AND NUT MADE OF CAST IRON AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0392611A
公开(公告)日：1991-04-17
申请号：JP23247189
申请日：1989-09-06
申请人： KURIMOTO LTD
发明人： MICHIURA YOSHISADA , AOKI NOBUO , KITAGAWA MASAYOSHI
IPC分类号： F16B35/00 , F16B37/00
摘要： PURPOSE:To obtain bolts and nuts having toughness contending with steel product and corrosion resistance by manufacturing them out of nodular graphite cast iron in a specific range of Mn component, tightly coating oxide film of thickness in a specific range, and forming the base into bainite structure. CONSTITUTION:Nodular graphite cast iron containing Mn component from 0.15% to 0.4% is cast, formed into austenite structure at 850 deg.C-950 deg.C, formed with oxide film to have thickness of 20mum-100mum on the casting surface, and the whole base is constituted into bainite structure by quenching up to the atmosphere held at 250 deg.C-400 deg.C. In this way, bolts and nuts having remarkably larger strength than that of material of usual ferrite structure, toughness contending with steel products, and excellent corrosion resistance, is obtained.

8. 发明专利

JP2003164952A CONICAL LADLE FOR CENTRIFUGAL CASTING 审中-公开
公开(公告)号：JP2003164952A
公开(公告)日：2003-06-10
申请号：JP2001363513
申请日：2001-11-29
申请人： KURIMOTO LTD
发明人： UMEMOTO KOSAKU , AOKI NOBUO , MAEDONO HIROAKI , YAMAMOTO MASAAKI
IPC分类号： B22D35/00 , B22D13/10 , B22D41/02
摘要： PROBLEM TO BE SOLVED: To solve such a problem that a molten metal outlet of a conical type ladle for centrifugal casting is damaged by thermal shock and the like and must be mended for each casting. SOLUTION: The molten metal outlet 2, i.e., a head of a tilting base 1 of the conical type ladle, is formed by a compound refractory layer together with an inner iron plate 21 installed vertically on an enclosed iron plate 11 up to the top surface of a refractory mortar 13, a porous iron plate 22 fastened perpendicular to the enclosed iron plate 11 in parallel with the inner iron plate 21 at intervals, which is integrally bonded to the inner iron plate 21 by using both a front refractory mortar 25 covering both sides of the iron plate while filling and communicating numerous porosity 23 of the iron plate and a rear refractory mortar 24. As the integrally bonded compound refractory layer will not be fallen off even if a gap or a crack is generated when used, it may bring a marked improvement in durability than ever before. In practice, an open area ratio of the porous iron plate is 5-35%, most desirably 20%. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2000273391A COATING MATERIAL FOR TREATING END FACE OF JOINT OF CAST IRON PIPE 失效
公开(公告)号：JP2000273391A
公开(公告)日：2000-10-03
申请号：JP8346399
申请日：1999-03-26
申请人： KURIMOTO LTD , DAINIPPON TORYO KK
发明人： AOKI NOBUO , SAITO MASAHIKO , MICHIURA YOSHISADA , TAME SHINICHIRO , YAMADA YOSHIO
IPC分类号： F16L9/02 , B05D7/14 , B05D7/24 , B28B21/94 , C09D5/08 , C09D163/00 , F16L58/06 , F16L58/10
摘要： PROBLEM TO BE SOLVED: To obtain a coating material which forms a coating film excellent in adhesion to cast iron and mortar by compounding an epoxy resin which is liquid at a normal temperature and has a specified number of epoxy groups and a specified epoxy equivalent with an amine-base curative, a diluent and a body pigment. SOLUTION: This coating material comprises an epoxy resin (e.g. a bisphenol epoxy resin) which is liquid at normal temperature and has an epoxy equivalent of 170-250 and, on average, at least 1.5 epoxy groups per molecule, an amine- base curative (e.g. a modified m-xylenediamine-type curative) preferably having an active hydrogen equivalent of 90-100, a diluent (e.g. a toluene resin as a nonreactive diluent resin) and a body pigment (e.g. barium sulfate). A cast iron pipe is coated after the end face of its joint is coated with this coating material. This coating material is quickly cured to quickly develop its strengths and gives a coating film having high strengths and adhering well to a cast iron pipe and a mortar lining, thus giving excellent water-stopping properties to the end face of the pipe.

10. 发明专利

JPH0568918A METHOD AND DEVICE FOR LINING INNER SURFACE OF PIPE 失效
公开(公告)号：JPH0568918A
公开(公告)日：1993-03-23
申请号：JP26103691
申请日：1991-09-11
申请人： KURIMOTO LTD
发明人： KITAGAWA MASAYOSHI , MATSUNAGA JUNJI , TAKADA NOBUHIDE , AOKI NOBUO
IPC分类号： B05B13/06 , B05C7/02 , B05D7/22 , B05D7/24 , B28B21/58 , B28B21/94
摘要： PURPOSE:To apply a firm and dense lining to the inner surface of a pipe using aggregate and a curable resin. CONSTITUTION:The aggregate 3 quantitatively carried by a screw conveyor 4 is vertically supplied to the inner surface of a pipe 1 moved under rotation and, simultaneously the liquid curable resin carried by pipes 61,62,63 is injected to the falling position where the aggregate reaches the bottom point of the pipe l to coat the surfaces of the particles of the aggregate with the thin film of the curable resin. These particles are strongly pressed to the inner surface of the pipe by centrifugal force after falling to be rapidly cured. By this procedure, lining is applied to the inner surface of the pipe. This method can be also adapted to a small caliber pipe. The thickness of a lining layer becomes uniform as compared with a conventional one. The device adapted to this method is also simple.

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