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Dispersants for coating compositions isocyanatoalkylacrylates as inorganic pigment dispersant on metal substrates

  • US 4,369,232 A
  • Filed: 12/23/1980
  • Issued: 01/18/1983
  • Est. Priority Date: 12/23/1980
  • Status: Expired due to Term
First Claim
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1. A composition of the formula ##STR4## A, B and C are connected to Z by urea linkages, Z is the residue of a polyisocyanate, it being understood that Z is at least a triisocyanate when all of A, B and C are present,A is the residue which results from the removal of amino hydrogen from a primary or secondary fatty acid amine of 12-24 carbon atoms in the fatty acid groups;

  • B is the residue which results from the removal of amino hydrogen from a primary or secondary alkyl amine or alkanolamine of up to 6 carbon atoms in the alkyl or alkanol groups;

    C is the residue which results from the removal of amino hydrogen from a primary or secondary aminosilane of the formula
    
    
    space="preserve" listing-type="equation">H.sub.n N-[(CH.sub.2).sub.p -Si-(OY).sub.3 ].sub.mwhereinY is alkyl of 2-6 carbon atoms, m and n are each 1 or 2 and the sum of m and n is 3, and p is 2-6; and

    a is 20-80, b is 80-20, and c is 0-40, the sum of a, b and c being 100, the mole percentage of --NCO groups replaced on Z.

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