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公开(公告)号：JPH02267771A
公开(公告)日：1990-11-01
申请号：JP8924689
申请日：1989-04-07
Applicant: KAO CORP
Inventor： ISHIKAWA ATSUSHI , YAMAUCHI MICHIHIDE , ISOBE TSUTOMU
IPC: G11B17/34
Abstract: PURPOSE:To eliminate contact of a magnetic disk with a regulating surface of a sliding part by providing the sliding part with a slant surface in order to bring a corner part of a recessed groove of the sliding part on the upstream side and a corner part of the slant surface on the downstream side into contact with a rotating flexible magnetic disk. CONSTITUTION:The sliding part 2 is formed with the recessed groove 22 which is opened in the inside direction of the rotational surface opposite to a movable range of a magnetic head 3. Then, the part 2 is formed with the slant surface on the downstream side of the groove 22 as the farther the downstream side the closer the position to the flexible magnetic disk 1. And, a parallel surface 24a to the rotational surface of the disk 1 is formed on the upstream side. Then, the part 2 is in contact to the disk 1 at the corner part 25a extending in the radial direction of the groove 22 on the upstream side of the groove 22 and also as the corner part 26 extending in the radial direction formed in the downstream of the slant surface 24b on the downstream side. As a result, no contact is allowed between the regulating surface of the part 2 and the disk 1 due to sucking each other, thus obtaining good recording and reproducing characteristics.
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公开(公告)号：JPS6469566A
公开(公告)日：1989-03-15
申请号：JP22711587
申请日：1987-09-09
Applicant: KAO CORP
Inventor： WAKASA MASANOBU , YAMAUCHI MICHIHIDE , ISHIKAWA ATSUSHI
Abstract: PURPOSE:To obtain a glassy carbon material having low friction resistance to an opposite material, excellent wear resistance of its own and durability, by curing a thermosetting polymer material, heating the material under a specific treating condition and carbonizing. CONSTITUTION:In production of a glassy carbon material including (A) a process to curing a polymer material consisting essentially of a thermosetting polymer and (B) a process to heat and to carbonize the polymer material obtained by the process A, the process B is carried out as follows. Namely, in the carbonizing baking process B, (B-1) pretreatment process of pretreating at 800-1,200 deg.C and (B-2) pressurizing and heat-treating process of heat-treating in an inert atmosphere at 1,200-1,600 deg.C while applying a pressure of >=1,000 atmosphere are carried out. A monomer for a thermosetting polymer may be used as the polymer material used or a blend of a curing precursor and ultrafine particles or whiskers as a filler may be used.
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公开(公告)号：JP2005264082A
公开(公告)日：2005-09-29
申请号：JP2004081769
申请日：2004-03-22
Inventor： ISHIKAWA ATSUSHI
IPC: C08G18/00 , C08G101/00
Abstract: PROBLEM TO BE SOLVED: To provide an additive for improving compatibility of a polyol component with a hydrofluorocarbon and to provide a method for producing polyurethane foam in which homogenization and stabilization of a cell can be achieved by realizing homogeneous mixing of the polyol component with an isocyanate component.
SOLUTION: The polyol mixture comprises a polyol component, a dibasic acid ester represented by formula (I): R
1 -OCOR
2 COO-R
1 (R
1 is a 1-8C straight-chain or branched chain alkyl group or alkenyl group; R
2 is a direct bond or a 1-8C straight-chain or branched chain alkylene group or alkenylene group) and a foaming agent including the hydrofluorocarbon and optionally further, a nonionic compound represented by formula (II): R
3 O-[(EO)
x -(PO)
y ]-(EO)
z -H (R
3 is an 8-20C straight-chain or branched chain alkyl group or alkenyl group; EO is an oxyethylene group; PO is an oxypropylene group). The method for producing the polyurethane foam comprises reacting the polyol mixture with an isocyanate component.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供一种用于提高多元醇组分与氢氟烃的相容性的添加剂，并提供一种制备聚氨酯泡沫的方法，其中通过实现多元醇组分的均匀混合可以实现电池的均化和稳定化 与异氰酸酯组分。 解决方案：多元醇混合物包含多元醇组分，由式（I）表示的二元酸酯：R 1 SPO 2，COO-R 1， （R
1 是1-8C的直链或支链烷基或链烯基; R 2是直接键或1-8C直链 链或支链亚烷基或亚烯基）和包含氢氟烃的发泡剂，以及任选地还有式（II）表示的非离子化合物：R 3 = O（O） （PO）y y y]>>>>> -H -H -H>> chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain chain 或支链烷基或烯基; EO为氧化乙烯基; PO为氧化亚丙基）。 制备聚氨酯泡沫的方法包括使多元醇混合物与异氰酸酯组分反应。 版权所有（C）2005，JPO＆NCIPI -
公开(公告)号：JP2003055430A
公开(公告)日：2003-02-26
申请号：JP2001244295
申请日：2001-08-10
Inventor： ISHIKAWA ATSUSHI , SAKAI MITSURU , MORII MASAYOSHI , FUJIOKA HIDEAKI
IPC: B29C39/02 , B29K75/00 , B29K105/04 , B29K105/24 , C08G18/65 , C08G101/00
Abstract: PROBLEM TO BE SOLVED: To provide a crosslinking agent which is used for producing a polyurethane foam, is a low-viscosity liquid at room temperature, excellent in handleability, and has high reactivity, and a process which makes it possible to quickly produce a flame-retardant polyurethane foam excellent in mechanical properties such as compressive strength.
SOLUTION: The crosslinking agent for producing a polyurethane foam contains a bisphenol A derivative represented by formula (I) (wherein R
1 is H or methyl; and (m) is the average number of oxyalkylene molecules added and is 1 to 3) and a dialkanolamine compound represented by formula (II) (wherein R
2 is H or methyl; R
3 is a 1-18C linear or branched alkyl or a 2-18C linear or branched alkenyl; and (n) is the average number of oxyalkylene molecules added and is 1 to 3). The process for producing a polyurethane foam comprises reacting a polyol composition containing the crosslinking agent and a polyol component with an isocyanate component in the presence of a foaming agent and a catalyst.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：为了提供用于制备聚氨酯泡沫的交联剂，在室温下为低粘度液体，操作性优异，反应性高，并且能够快速产生火焰的方法 优异的机械性能如抗压强度的聚氨酯泡沫塑料。 解决方案：用于制备聚氨酯泡沫的交联剂含有由式（I）表示的双酚A衍生物（其中R 1是H或甲基;和（m）是加入的氧化烯分子的平均数，为1至3） 和由式（II）表示的二烷醇胺化合物（其中R 2是H或甲基; R 3是1-18C直链或支链烷基或2-18C直链或支链烯基;和（n）是 平均氧化烯分子数为1〜3）。 制备聚氨酯泡沫的方法包括在发泡剂和催化剂的存在下使包含交联剂的多元醇组合物和多元醇组分与异氰酸酯组分反应。
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公开(公告)号：JP2001253925A
公开(公告)日：2001-09-18
申请号：JP2000066774
申请日：2000-03-10
Applicant: KAO CORP
Inventor： ISHIKAWA ATSUSHI , SAKAI MITSURU , MORII MASAYOSHI
IPC: C08G18/18 , C08G101/00
Abstract: PROBLEM TO BE SOLVED: To provide a method for the quick production of a polyurethane foam having excellent dimensional stability even at a low temperature while scarcely generating odor originated from the catalyst. SOLUTION: The objective method for the production of a polyurethane foam comprises the reaction of a polyol component and an isocyanate component in the presence of a foaming agent and a polyurethane production catalyst containing a compound expressed by formula (I) R1R2N-(CH2)n-NR3R4 (R1, R2, R3 and R4 are each independently a 1-4C straight or branched chain alkyl; and (n) is an integer of 8-12) and a dialkylaminoalkyl alcohol expressed by formula (II) R5R6N-A-OH (A is a 4-8C straight or branched chain alkylene; and R5 and R6 are each independently a 1-4C straight or branched chain alkyl).
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Patent Agency Ranking
公开(公告)号：JP2000159852A
公开(公告)日：2000-06-13
申请号：JP33988098
申请日：1998-11-30
Applicant: KAO CORP
Inventor： SAKAI MITSURU , ISHIKAWA ATSUSHI , MORII MASAYOSHI
Abstract: PROBLEM TO BE SOLVED: To produce a polyurethane foam excellent in dimensional stability even at low temperatures by reacting a polyol component with an isocyanate component in the presence of a catalyst containing a compound having a tert- amino group and an NCO-reactive OH group and a compound having a prim- amino group and a prim-OH group, a blowing agent, and a foam stabilizer. SOLUTION: Preferably, the compound having a tert-amino group and an NCO-reactive OH group is 6-dimethylamino-1-hexanol, and the compound having a prim-amino group and a prim-OH group is preferably a compound of the formula: A-(CH2)n-NH2 and/or a compound selected from among 3- aminopropanol, 2-hydroxyethylaminopropylamine, 2- hydroxyethylaminoethylamine, and N-methyl-N-(2-hydroxyethyl)-1,3- propanediamine. In the formula, A is NR1R2 or OH; R1 is H or 1-4C alkyl; R2 is CH2CH2OH; and n is 2-6.
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77.发明专利
公开(公告)号：JPH076349A
公开(公告)日：1995-01-10
申请号：JP14717493
申请日：1993-06-18
Applicant: KAO CORP
Inventor： YAMAMOTO YUZO , ISHIKAWA ATSUSHI , YAMAUCHI MICHIHIDE
Abstract: PURPOSE:To obtain the disk substrate of a type dealing with high-density recording by subjecting the substrate for the magnetic recording medium consisting of a conductive substrate to electrolytic etching in an electrolyte soln., thereby forming the substrate. CONSTITUTION:The substrate for the magnetic recording medium consisting of the conductive substrate is formed by electrolytic etching in the electrolyte soln. Any substrate having OMEGAcm specific resistance is satisfactory. The substrate formed by coating the surface of glassy carbon subjected to surface polishing with a nonmagnetic metallic layer of Ni-P plating, etc., is used. This conductive substrate is subjected to electrolytic etching by electrolysis with the substrate as anode. The texture having excellent productivity and surface characteristics is thereby obtd. The disk substrate of the type dealing with high-density recording and eventually the high-density recording type magnetic disk are obtd.
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公开(公告)号：JPH04181529A
公开(公告)日：1992-06-29
申请号：JP31041990
申请日：1990-11-16
Applicant: KAO CORP
Inventor： ISHIKAWA ATSUSHI , KAMIYAMA KENICHI
IPC: G11B7/24
Abstract: PURPOSE:To form a reactive activation agent layer of an organic protective film to achieve a higher quality. CONSTITUTION:For example, an ultraviolet hardening type hard coat agent is applied on a polycarbonate substrate 2 by 1-2 mum by a spin coat method and hardened by irradiation with ultraviolet rays to form an organic protective film. A solution mixed with one part of a cation based activation agent having unsaturated alyl group, 99 parts of methyl ethyl ketone and 0.05 parts of photopolymerization initiator is applied on the film 3 on coating conditions of 20 sec as intact initially at 300 rpm and 3000 rpm after 5 sec. by the spin coat method and the work is dried for 10 minute at 50 deg.C thereafter. Moreover, an electron irradiation is performed to cause a reaction with the cation based activating agent having the unsaturated alyl group to form a reactive activation agent layer 4 with a thickness of 0.01-1 mum. This provides a product hard to damage and achieves higher quality with limited adhesion of dirts and dust and limited generation of errors.
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公开(公告)号：JPH02297755A
公开(公告)日：1990-12-10
申请号：JP11953789
申请日：1989-05-12
Applicant: KAO CORP
Inventor： ISHIKAWA ATSUSHI , YAMAUCHI MICHIHIDE , ISOBE TSUTOMU
Abstract: PURPOSE:To obtain satisfactory recording and reproducing characteristic by forming the regulation plane of the slidably contacting component at the downstream side of the magnetic head as an oblique plane being separated from a disk, and forming the regulation plane of the slidably contacting component at the upstream side as a plane approaching to the disk in parallel with the oblique plane or a rotating plane so as to stabilize the abutting states of slidably contacting components at the downstream and upstream sides of a magnetic head. CONSTITUTION:The regulation plane which regulates the disk position of a first slidably contacting component 7 is formed as the oblique plane being separated from the rotating plane of the disk 1 at the downstream side as approaching, and a groove part 73 having a part to intersect orthogonally to the oblique plane in a rotational direction is formed, and the regulation plane to regulate the disk position of a second slidably contacting component 8 is formed as the oblique plane approaching the rotating plane of the disk 1 at the downstream side as approaching. Thereby, a flexible magnetic disk 1 is pressed on the magnetic head 3 with a constant pressing force by the negative pressure of an air flow at a first regulation plane, and the flexible magnetic disk can be prevented from being collided on the second slidably contacting component 8 with the positive pressure of the air flow, then, the traveling plane of the disk can be stably regulated. In such a way, the travel of the flexible magnetic disk 1 can be stabilized, and the satisfactory recording and reproducing characteristic can be obtained.
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公开(公告)号：JPS6452603A
公开(公告)日：1989-02-28
申请号：JP7577588
申请日：1988-03-29
Applicant: KAO CORP
Inventor： YAMAUCHI MICHIHIDE , OOJI NOBUNORI , ISHIKAWA ATSUSHI , WAKASA MASANOBU
IPC: C01B31/04 , C04B35/52 , C10M111/00 , C10N40/02 , C10N40/18 , C10N50/08 , C23C14/06 , C23C14/12 , F16N15/00 , G11B5/10 , G11B5/187 , G11B5/60 , G11B15/60 , G11B15/61 , G11B17/32 , G11B17/34 , G11B23/087 , G11B23/50
Abstract: PURPOSE:To improve stability and durability of a magnetic medium recording device useful for processing information, etc., by constructing a slide contact surface of a slide contact part in a recording device consisting of a magnetic head, etc., from a composition containing glassy carbon and a specific compound. CONSTITUTION:A thermosetting polymer is carbonized to provide a glassy carbon material (A), such as polyacrylonitrile based material. One or more are selected from fine metallic oxide particles, fine metallic nitride particles, fine metallic carbide particles and fine metallic boride particles to afford an inorganic compound (B) (e.g. SiC having about 0.06mum particle diameter). The components (A) and (B) are then mixed to provide a composite material (C), which is then subjected to cutting out machining to afford a slide contact part 11. The back surface of a magnetic head 24 of a disk drive consisting of a spindle 22 for rotating a flexible magnetic disk 21 and the magnetic head 24, etc., in the vicinity of the surface of the disk 21 is provided with the slide contact part 11 to improve durability of the resultant magnetic medium record ing device.
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