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Coating composition for a metal, and metal material having a coating of such coating composition

  • US 20080063892A1
  • Filed: 09/07/2007
  • Published: 03/13/2008
  • Est. Priority Date: 09/08/2006
  • Status: Active Grant
First Claim
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1. A coating composition for a metal comprising parts by weight of a synthetic resin solid content (A);

  • 1 to 200 parts by weight of a filler (B); and

    0.01 to 10 parts by weight of a mixture of (C-1) 10 to 95% by weight of acetylene glycol represented by the following general formula (1);

    and/or an ethoxylated derivative of the acetylene glycol represented by the following general formula (2);

    wherein m and n are respectively a positive number, and m+n is 2 to 30;

    (C-2) 5 to 90% by weight of at least one member selected from polyoxy(ethylene-propylene) block polymers represented by the following formula (3);


    HO(C2H4O)w(C3H6O)x(C2H4O)y(C3H6O)zH  



    (3) wherein w, x, y, and z are respectively 0 or a positive number with the proviso that w+x+y+z>

    0, the block polymer having a weight average molecular weight of 1,500 to 10,000, an ethylene oxide content of 35 to 90% by weight, and a propylene oxide content of 10 to 65% by weight; and

    (C-3) 0 to 25% by weight of at least one member selected from water, a water soluble organic solvent, and an acetylene glycol or ethoxylated derivative thereof other than those of the formulae (1) and (2).

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