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Novel cationic epoxy resin esters and process of producing same

  • US 4,579,932 A
  • Filed: 11/07/1983
  • Issued: 04/01/1986
  • Est. Priority Date: 11/05/1982
  • Status: Expired due to Fees
First Claim
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1. Cationic epoxy resin esters obtained by the reaction of a compound carrying at least two 1,2-epoxy groups with a carboxylic acid, said carboxylic acid being the reaction product of a dicarboxylic acid anhydride and a tertiary amine, said amine having the structure- ##STR12## wherein R and Rx are a hydrogen atom;

  • an alkyl radical or an aryl radical and n is 2 or 3, and Ry is an alkyl radical, an amino-alkyl radical having the primary amino groups, if present, being in the form of ketimine blocked amino groups, and said tertiary amine being obtained through ring formation with an aldehyde, water being split off, from at least one member of the group-(a) an N-substituted ethanolamine or N-substituted propanolamine;

    (b) primary β

    -hydroxyethylamines or β

    -hydroxypropylamines or γ

    -hydroxyethylamines or γ

    -hydroxypropylamines, or a substituted derivative of said amines, after blocking the primary amino group as a ketimine or through reaction with acrylate monomers, and(c) reaction product of a primary alkyl amine with a monoepoxy compound;

    the quantity of tertiary amine being such that the epoxy resin ester is at least substantially free of epoxy groups and has an amine value of at least 35 mg KOH/g.

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