Photocurable composition suitable for rust prevention of a threaded joint for steel pipes
    3.
    发明授权
    Photocurable composition suitable for rust prevention of a threaded joint for steel pipes 有权
    适用于钢管螺纹接头的防锈组合物

    公开(公告)号:US08586644B2

    公开(公告)日:2013-11-19

    申请号:US13295132

    申请日:2011-11-14

    IPC分类号: C08F2/46 C08G61/04

    摘要: A thin and highly transparent coating having excellent air tightness, adhesion to a substrate, lubricating properties, galling resistance, and corrosion resistance is formed on the surface of a metal substrate and particularly on the surface of a threaded joint which is used for connection of oil country tubular goods. A photocurable composition comprising (A) a photocurable (meth)acrylate resin, (B) a (meth)acrylate monomer selected from a monofunctional (meth)acrylate monomer and a difunctional (meth)acrylate monomer, (C) a trifunctional or higher multifunctional (meth)acrylate monomer, (D) a photopolymerization initiator, (E) a benzotriazole anticorrosive agent, (F) an anticorrosive pigment selected from a phosphate anticorrosive pigment and calcium ion-exchanged silica, and (G) a phosphate ester is used to form a photocured coating.

    摘要翻译: 在金属基材的表面上,特别是在用于连接油的螺纹接头的表面上形成具有优异的气密性,对基材的粘附性,润滑性,耐磨损性和耐腐蚀性的薄且高度透明的涂层 国家管状物品。 一种可光固化组合物,其包含(A)光固化性(甲基)丙烯酸酯树脂,(B)选自单官能(甲基)丙烯酸酯单体和双官能(甲基)丙烯酸酯单体的(甲基)丙烯酸酯单体,(C)三官能以上多官能 (甲基)丙烯酸酯单体,(D)光聚合引发剂,(E)苯并三唑防腐剂,(F)选自磷酸盐防腐颜料和钙离子交换二氧化硅的防腐颜料和(G)磷酸酯 形成光固化涂层。

    Threaded joint for steel pipes
    8.
    发明授权
    Threaded joint for steel pipes 有权
    钢管螺纹接头

    公开(公告)号:US07770935B2

    公开(公告)日:2010-08-10

    申请号:US11329159

    申请日:2006-01-11

    IPC分类号: F16L21/00

    摘要: A threaded joint for steel pipes comprises a pin (1) and a box (2) each having a threaded portion (3a or 3b) and an unthreaded metal-to-metal contact portion (4a or 4b) as contact surfaces which contact each other when the joint is fastened. The contact surfaces (3a and 4a and/or 3b and 4b) of at least one of the pin (1) and the box (2) are coated with a lower layer of a solid lubricating coating containing a solid lubricating powder (e.g., molybdenum disulfide, tungsten disulfide, or graphite) and a binder (e.g., an epoxy or other organic resin) and an upper layer of a solid corrosion protective coating formed by an organic resin which does not contain solid particles.

    摘要翻译: 用于钢管的螺纹接头包括销(1)和盒(2),每个具有螺纹部分(3a或3b)和作为彼此接触的接触表面的无螺纹金属对金属接触部分(4a或4b) 当关节紧固时。 销(1)和箱(2)中的至少一个的接触表面(3a和4a和/或3b和4b)涂覆有固体润滑涂层的下层,其含有固体润滑粉末(例如钼 二硫化物,二硫化钨或石墨)和粘合剂(例如环氧树脂或其它有机树脂)和由不含固体颗粒的有机树脂形成的固体防腐蚀涂层的上层。