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Organic solvent solutions of phosphate esters of epoxy resins

  • US 5,086,094 A
  • Filed: 05/29/1990
  • Issued: 02/04/1992
  • Est. Priority Date: 09/07/1988
  • Status: Expired due to Fees
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Assignment
First Claim
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1. A curable composition which is (a) essentially water free and (b) polymer of ethylenically unsaturated monomer free;

  • which comprises a mixture of(A) a product which is free of methylol or alkoxymethyl substituent groups resulting from reacting under phosphorylating conditions(1) at least one compound containing an average of more than one vicinal epoxide group per molecule selected from the group consisting of those epoxy resins represented by the following formulas I, II, III, IV or V ##STR2## ##STR3## ##STR4## ##STR5## ##STR6## wherein each A is independently a divalent hydrocarbyl group having from 1 to about 12 carbon atoms;

    each A'"'"' is independently a divalent hydrocarbyl group having from 1 to about 10 carbon atoms;

    each Q is independently hydrogen or an alkyl group having from 1 to about 4 carbon atoms;

    each R is independently hydrogen or an alkyl group having from 1 to about 3 carbon atoms;

    each X is independently hydrogen, a hydrocarbyl or hydrocarbyloxy group having from 1 to about 12 carbon atoms or a halogen atom;

    m has a value from about 0.01 to about 8;

    n has a value of zero or 1;

    n'"'"' has an average value from about 0 to about 200;

    each p suitably has a value from zero to about 10; and

    each p'"'"' suitably has a value from zero to about 8;

    with(2) at least one member selected from the group consisting of(a) phosphoric acid;

    (b) super phosphoric acid; and

    (c) a combination of (a) and (b); and

    (3) optionally water;

    wherein component (2) is employed in an amount which provides a ratio of moles of component (2) to component (1) of from about 0.02;

    1 to about 5;

    1; and

    component (3) is employed in an amount which provides a ratio of moles of component (3) to moles of component (1) of from zero;

    1 to an amount sufficient to totally hydrolyze all of the epoxide groups in component (1), said amount of water including any amount of water contained in component (2) and subsequently removing any residual quantities of water remaining after any hydrolysis of the epoxide-containing compound of component (1); and

    (B) at least one organic solvent for component (A); and

    wherein component (A) is employed in an amount of from about 100 to about 10 percent by weight based upon the combined weight of components (A) and (B); and

    component (B) is employed in an amount of from about 0 to about 90 percent by weight based upon the combined weight of components (A) and (B); and

    (C) a curing quantity of at least one curing agent for component (A) which curing agent cures through the aliphatic hydroxyl groups contained in the phosphorylated and optionally totally or partially hydrolyzed epoxy resin.

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