WATER WASHABLE PROTECTIVE COATING
    46.
    发明公开
    WATER WASHABLE PROTECTIVE COATING 审中-公开
    WASSERWASCHBARE保护涂层

    公开(公告)号:EP1109852A4

    公开(公告)日:2004-04-14

    申请号:EP98944534

    申请日:1998-08-26

    申请人: GAGE PROD CO

    摘要: A coating composition for producing a water washable, protective coating, comprising, by weight, 10-50 % of a mixture of at least two acrylic polymers each having different molecular weights, acid numbers, and glass transition temperatures. The composition includes water and an alkali, in an amount sufficient to maintain the composition at a pH in the range of 7.5 to 9.5 and is further characterized in that the average molecular weight of the mixture of the at least two acrylic polymers is in the range of approximately 35,000 to 100,000. The average acid number of the mixture is in the range of approximately 65 to 150 and the glass transition temperature of a coating produced by the evaporation of the water from the composition is in the range of 0 to 70 DEG C.

    COATING MATERIAL COMPOSITION
    47.
    发明公开
    COATING MATERIAL COMPOSITION 失效
    涂料组合物。

    公开(公告)号:EP0664324A1

    公开(公告)日:1995-07-26

    申请号:EP92920898.1

    申请日:1992-09-30

    CPC分类号: C08F8/44

    摘要: A process for producing a coating material composition characterized by reacting an emulsion of a polymer having an acid value of 20 to 200, prepared by polymerizing an ethylenically unsaturated monomer, with a calcium compound in a chemical eqivalent of 0.05 to 0.9 based on the above acid value. Usable calcium compounds include oxide, hydroxide and carbonate thereof and may be reacted with the polymer after the pH of the emulsion is regulated to 4.5 to 9 by adding a base thereto. The composition is stable for long and does not cause environmental pollution because it does not contain heavy metals. Because no metallic complex is used therein, it is free from disagreeable odor due to ammonia generated by complex decomposition during drying after coating.