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

  • US 20080063893A1
  • Filed: 09/07/2007
  • Published: 03/13/2008
  • Est. Priority Date: 09/08/2006
  • Status: Active Grant
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Assignment
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 90% by weight of at least one member selected from an acetylene glycol represented by the following general formula (1);

    wherein R1 and R2 are respectively an alkyl group containing 1 to 5 carbon atoms, an ethylene oxide—

    propylene oxide block adduct of an acetylene glycol represented by the following general formula (2);

    wherein R3 and R4 are respectively an alkyl group containing 1 to 5 carbon atoms;

    A is —

    (C2H4O)w1—

    (C3H6O)x1—

    (C2H4O)y1—

    (C3H6O)z1—

    H; and

    B is —

    (C2H4O)w2—

    (C3H6O)x2—

    (C2H4O)y2—

    (C3H6O)z2—

    H;

    wherein w1, w2, x1, x2, y1, y2, z1, and z2 are respectively 0 or a positive number of 0.5 to 25, w1+w2+y1+y2 is 0.5 to 50, x1+x2+z1+z2 is 0.5 to 50, and w1+w2+x1+x2+y1+y2+z1+z2 is 1 to

         100);

    an ethylene oxide—

    propylene oxide random adduct of an acetylene glycol represented by the following general formula (3);

    wherein R5 and R6 are respectively an alkyl group containing 1 to 5 carbon atoms;

    D is —

    (C2H4O/C3H6O)m-H;

    and E is —

    (C2H4O/C3H6O)n-H;

    wherein m and n are respectively 0 or a positive number of 0.5 to 50, and m+n is 1 to

         100);

    (C-2) 10 to 90% by weight of at least one polyoxyalkylene alkyl ether having an HLB of 8 to 18 represented by the following general formula (4);


    R7O(C3H6O)v(C2H4O)w(C3H6O)x(C2H4O)y(C3H6O)zH 

     

    (4)wherein R7 is an alkyl group containing 1 to 20 carbon atoms;

    v, w, x, y, and z are respectively 0 or a positive number of 1 to 20;

    with the proviso v+w+x+y+z>

    0, and (C-3) 0 to 25% by weight of water and/or a water soluble organic solvent.

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