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    Corrosion-proofing paint for metal tube
    1.
    发明专利
    Corrosion-proofing paint for metal tube 失效
    金属腐蚀防腐涂料

    公开(公告)号：JPS6185479A

    公开(公告)日：1986-05-01

    申请号：JP20846784

    申请日：1984-10-03

    申请人： Dai Ichi Kogyo Seiyaku Co Ltd ,  Kubota Ltd

    发明人： MAKI HIROHISA ,  NAGAO SHOZO ,  OHASHI YOSHINOBU ,  KITSUKAWA HIROSHI ,  MIYAZAKI TOSHIYUKI ,  CHIKAMI HIROSHI

    IPC分类号： C09D5/08 ,  C09D175/00

    摘要： PURPOSE: To produce the titled polyurethane paint giving a thick coating layer having excellent water-resistance and corrosion-resistance, with litle water pollution, by compounding a polyalkylene polyol having a specific hydroxyl value with an inorganic filler, a water-absorbent and an organic polyisocyanate compound at specific ratios.
    CONSTITUTION: The objective paint can be produced by compounding (A) 100 pts.(wt.) of a polyalkylene polyol having a hydroxyl value of 150W350 with (B) 5W250pts. of an inorganic filler having an oil-absorption of ≤120cc per 100g, (C) 0.1W150pts. of a water-absorbent, and (D) an organic polyisocyanate compound (e.g. tolylene diisocyanate). The equivalent ratio of NCO group in the component D to the OH group in the component A is selected to 0.85W1.5 to 1.0, and the gel time of the composition is adjusted to ≤30min.
    COPYRIGHT: (C)1986,JPO&Japio

    摘要翻译： 目的：通过将具有特定羟基值的聚亚烷基多羟基化合物与无机填料混合，制成具有优异耐水性和耐腐蚀性，具有良好水污染性的厚涂层的标题聚氨酯涂料，吸水剂和有机物 多异氰酸酯化合物。 构成：目标涂料可以通过（A）将（A）100重量份（重量）的羟值为150-350的聚亚烷基多元醇与（B）5-250pts混合来制备。 的无机填料，每100克油吸收<= 120cc，（C）为0.1-150pts。 的吸水剂，和（D）有机多异氰酸酯化合物（例如甲苯二异氰酸酯）。 将组分D中的NCO基与组分A中的OH基的当量比选择为0.85-1.5至1.0，并将组合物的凝胶时间调节至<= 30min。

    INSPECTION OF EXPANDER BLENDED CEMENT
    4.
    发明专利
    INSPECTION OF EXPANDER BLENDED CEMENT 失效

    公开(公告)号：JPS5899755A

    公开(公告)日：1983-06-14

    申请号：JP19816181

    申请日：1981-12-08

    申请人： KUBOTA LTD

    发明人： KITSUKAWA HIROSHI ,  FUJII TOSHIROU

    IPC分类号： G01N33/38

    摘要： PURPOSE:To accurately inspect the propriety of the blending level of a gypsum- based expander from the white turbidity of a supernatant of a liquid in which crushed powder of cement fine pieces is immersed in water after a barium solution is added thereto. CONSTITUTION:Cured fine pieces of an expander-blended cement to be inspected are crushed and a fixed amount of the crushed powder is added to a fixed amount of water and stirred. After the agitation, the solution is allowed to stand for a given time so that water-soluble ions in the crushed powder will be caused to elute. Then, a fixed amount of the supernatant is extracted and a fixed amount of pure water is added thereto and stirred to make a test water. A liquid is prepared for a standard blended cement blended accurately with a fixed amount of an expander on the same condition as said test water and made a standard liquid. After the preparation of the test water and the standard liquid, a fixed amount of a barium chloride solution is added to the same amount of the test water and the standard liquid to produce a white turbidity. Thereafter, the white turbid test water is compared with the white turbid standard liquid.

    METHOD FOR PAINTING INNER SURFACE OF METAL PIPE
    5.
    发明专利
    METHOD FOR PAINTING INNER SURFACE OF METAL PIPE 失效

    公开(公告)号：JPS5791780A

    公开(公告)日：1982-06-08

    申请号：JP16701080

    申请日：1980-11-26

    申请人： KUBOTA LTD ,  OUMIYA KOGYO KK

    发明人： OOHASHI YOSHINOBU ,  KITSUKAWA HIROSHI ,  WAKUSHIMA YOSHIKAZU ,  NAKATANI MASAAKI ,  HOSHINA AKITOMO ,  YAMADA TOSHIO

    IPC分类号： B05D7/22

    摘要： PURPOSE:To enable to certainly fill and seal the pinhole the inner surface of a pipe by a method wherein a resin paint with high fluidity is thinly coated to an inner surface of a heated metal pipe and, thereafter, a paint with low fluidity prepared by mixing an inorg. powder in said resin paint is thickly coated thereon. CONSTITUTION:During a time when a heated metal pipe 3 is naturally cooled to 270-180 deg.C, while said metal pipe 3 is rotated by driving under rolls 2, 2 as well as moved by driving a truck 1, a paint is injected into the metal pipe 3 from nozzles 51-53. In this time, a resin paint with high fluidity is injected from the first nozzle 51 to form a thin coating and a paint with low fluidity is injected from the second nozzle 52 to form a thick coating, and a topcoat powder paint is injected thereon from the third nozzle 53 to form a finish coating.

    CORROSION PREVENTING METHOD FOR ALREADY CONSTRUCTED METAL PIPE
    6.
    发明专利
    CORROSION PREVENTING METHOD FOR ALREADY CONSTRUCTED METAL PIPE 失效

    公开(公告)号：JPS5672185A

    公开(公告)日：1981-06-16

    申请号：JP14801879

    申请日：1979-11-14

    申请人： KUBOTA LTD

    发明人： NAGAO SHIYOUZOU ,  IWAMATSU JIYUNKICHI ,  NISHIZAKI KOUZOU ,  KITSUKAWA HIROSHI ,  OKAMOTO YASUNORI ,  KATANO YUKIO

    IPC分类号： C23F13/00

    摘要： PURPOSE:To perform corrosion preventive treatment of buried metal pipe simply without digging out the buried position, by inserting a sacrificial anode from ground surface until it comes into contact with the surface of already constructed, metal pipe and by welding the anode with the pipe by thermit method. CONSTITUTION:A hollow rod 2, a sacrificial anode made of a metal baser than Fe, e.g., Mg, Zn, or their alloy, is inserted from the surface of the earth so that its top end comes into contact with the surface of cast iron pipe, etc. buried in the earth. A pot 3, made of cast iron, having a perforation in it, is screwed into the hollow top end 21 of the sacrificial anode 2, and thermit welding mixture 4 composed of a mixture of iron oxide powder and Al powder is put into the perforation, where the thermit reaction is caused by the ignition with an ingiting agent to form molten iron, which welds the buried pipe with the sacrificial anode 2. Hereby the buried pipe is prevented simply from being corroded without being dug out.