Method and apparatus for the polymer coating of substrates
    31.
    发明公开
    Method and apparatus for the polymer coating of substrates 失效
    基材聚合物涂层的方法和装置

    公开(公告)号:EP0099727A3

    公开(公告)日:1985-10-16

    申请号:EP83304073

    申请日:1983-07-13

    Abstract: A method and apparatus for the coating of a substrate such as a polyethylene terephthalate container with a gas barrier coating of a copolymer of vinylidene chloride is disclosed. The method includes locating the container to be coated in close proximity to one or more airless spray nozzles and impacting the outside surface of the container with a stream of a stabilized aqueous polymer dispersion such as an aqueous polyvinylidene chloride dispersion. The impacting force of the stable polyvinylidene chloride dispersion on the surface of the container is sufficient to cause selective destabilization of the dispersion at the surface interface to form a gel layer containing the polymer in the continuous phase. This gel layer serves as an adhesive layer for an overlying layer of the aqueous polymer dispersion as a continuous uniform coating. The resulting wet coating does not sag or run off. The coating on the container is then dried in a controlled atmosphere to complete the gel formation throughout its thickness whereupon it is further dried to remove the water from the coating and to collapse the get to form a film without distorting the container. The dried coating is smooth, uniform and uniformly transparent. In operation, the overspray can be collected and returned to achieve greater than 95% material efficiency.

    Plastic transparencies having improved resistance to cracking
    33.
    发明公开
    Plastic transparencies having improved resistance to cracking 失效
    具有改善耐腐蚀性的塑料透明性

    公开(公告)号:EP0055802A3

    公开(公告)日:1982-08-04

    申请号:EP81108319

    申请日:1981-10-14

    Applicant: SWEDLOW, INC.

    Abstract: The invention relates to a plastic transparency having improved resistance to cracking. Plastic transparencies have been used as airplane windows, but have been subject to cracking, especially when subjected to a high humidity environment. The disclosed plastic transparency includes a transparent sheet member and a thin resinous coating overlying the peripheral edge surface of the sheet member. The sheet member is formed of a multi-axially oriented plastic material that is absorptive of moisture, preferably polymethyl methacrylate. The edge coating has a moisture permeation rate substantially less than that of the underlying sheet member, so when the window is exposed to an environment of high or variable humidity, any moisture gradient adjacent the peripheral edge surface is reduced, and the resultant tensile stress and incidence of cracking in the window are correspondingly reduced.

    Process for the preparation of a water-impervious surface coating
    36.
    发明公开
    Process for the preparation of a water-impervious surface coating 失效
    制备水不饱和表面涂料的方法

    公开(公告)号:EP0138125A3

    公开(公告)日:1986-10-15

    申请号:EP84111604

    申请日:1984-09-28

    CPC classification number: B05D7/54

    Abstract: A process for the preparation of a water-impervious surface coating on a substrate comprising applying to said substrate a layer of an aqueous bitumen emulsion containing, based on dry matter, 5-55% by weight of an acrylic prepolymer, 1-15% by weight of an air-drying alkyd resin, 40-80% by weight of bitumen and optionally up to 5% by weight of additives, applying to said layer a glass fibre layer and subsequently applying to said glass fibre layer at least one layer of water-based paint. A considerable saving in labour and time is obtained by the process and the coating obtained has an increased water vapour diffusion resistance.

    Process for treating surfaces of heat exchangers
    38.
    发明公开
    Process for treating surfaces of heat exchangers 失效
    处理换热器表面的工艺

    公开(公告)号:EP0129144A3

    公开(公告)日:1986-08-13

    申请号:EP84106431

    申请日:1984-06-05

    CPC classification number: B05D7/14 B05D5/02 B05D5/04 F28F19/04 F28F2245/02

    Abstract: Bei einem Verfahren zur Oberflächenbehandlung von Wärmeaustauscherflächen, die mit einem thermoplastischen Kunstharz-Überzug versehen sind, werden zur Aufbringung eines festhaftenden hydrophilen Überzuges auf den Kunstharz-Überzug hydrophile Feinpartikel auftragen und diese durch Erhitzen auf eine Temperatur oberhalb des Erweichungspunktes des Kuntharzes teilweise in den Über zug eingebettet.
    Der Kunstharz-Überzug sollte eine Schichtdicke im Bereich von 0,05 bis 20 µm, vorzugsweise im bereich von 0,3 bis 2 µm, aufweisen. Als hydrophile Feinpartikel sind Kiesel säure, Silikate, Tonerde und/oder Calciumkarbonat mit einer Korngröße von bis zu 10 µm, vorzugsweise von bis zu 2 µm, besonders geeignet. Ihre Auftragsmenge sollte 50 bis 2000 mg/m² betragen.

    Process for treating surfaces of heat exchangers
    39.
    发明公开
    Process for treating surfaces of heat exchangers 失效
    处理换热器表面的方法

    公开(公告)号:EP0128515A3

    公开(公告)日:1986-08-13

    申请号:EP84106432

    申请日:1984-06-05

    Abstract: Bei einem Verfahren zur Oberflächenbehandlung von Wärmeaustauscherflächen, die mit einem Kunstharz-Überzug versehen sind, wird zur Aufbringung eines festhaftenden hy drophilen Überzuges mit einer Dispersion nachbehandelt, die hydrophile Feinpartikel enthält und deren Dispergiermittel den Kunstharz-Überzug erweicht oder anlöst.
    Der Kunstharz-Überzug sollte eine Schichtdicke im Be reich von 0,05 bis 20 µm, vorzugsweise im Bereich von 0,3 bis 2 µm, aufweisen. Als hydrophile Feinpartikel sind Kieselsäure, Silikate, Tonerde und/oder Kalziumkarbonat mit einer Korn größe von bis zu 10 µm, vorzugsweise von bis zu 2 µm, beson ders geeignet. Ihre Auftragsmenge sollte 50 bis 2000 mg/m² betragen.

    Abstract translation: 在用于热交换表面,其被提供有合成树脂涂层的表面处理的方法,用于施加牢固粘附的HY drophilen涂层进行后处理用含有亲水性细颗粒和分散剂软化树脂涂层或溶解的分散体。 树脂涂层应该是丰富的0.05〜20微米,优选在0.3至2微米的范围内具有在成为一个层厚度。 作为亲水性细颗粒二氧化硅,硅酸盐,粘土和/或碳酸钙是至多10微米的晶粒尺寸的,优选至多2微米,特别是分布式能源合适。 他们的订单数量应该是50到2000毫克/平方米。

    Process for the surface halogenation of polymeric or metallic materials
    40.
    发明公开
    Process for the surface halogenation of polymeric or metallic materials 失效
    聚合物或金属材料的表面反应过程

    公开(公告)号:EP0102885A3

    公开(公告)日:1985-11-21

    申请号:EP83401600

    申请日:1983-08-02

    CPC classification number: B01J15/00 C08J7/126

    Abstract: The invention deals with a process for the surface halogenation of polymeric or metallic materials. This process comprises:
    introducing the material into a chamber; heating the chamber and the material to a selected temperature in the range of 38°C to 93°C by recirculating the air through a heat exchanger; evacuating the system; introducing a halogen into the system in an amount (i) of up to about 10 percent in excess of the theoretical amount of halogen required to halogenate the material to a desired depth and (ii) sufficient to provide a partial absolute pressure in the system in the range of 0.007 x 10 5 Pa to 0.21 x 10 5 Pa absolute; introducing an inert gas into the system in an amount sufficient to provide a total pressure in the system of about one atmosphere; maintaining the selected temperature by recirculating the halogen/inert gas mixture through the heat exchanger; recirculating the halogen/inert gas mixture a sufficient number of times to reduce the amount of halogen to less than about 5 percent of the amount of halogen initially introduced into the system; evacuating the system; introducing air into the system to provide about atmospheric pressure; and removing the material.

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