Halogenated epoxy resins

A halogen-containing epoxy resin composition comprising

• (I) from about 5 to about 95 percent by weight of at least one halogenated aromatic epoxy resin represented by the following formulas I or II ##STR8## wherein each A is independently a divalent hydrocarbyl group having from 1 to about 12 carbon atoms, ##STR9## each A" independently is a divalent hydrocarbyl group having from 1 to about 4 carbon atoms;
• each R is independently hydrogen or an alkyl group having from 1 to about 4 carbon atoms;
• each R' is independently hydrogen, a hydrocarbyl or hydrocarbyloxy group having from 1 to about 10 carbon atoms or a halogen atom;
• a has a value of zero or 1;
• each R" is independently hydrogen, a hydrocarbyl or hydrocarbyloxy group having from about 1 to about 10 carbon atoms, a halogen atom or a glycidyl ether group;
• each X is independently hydrogen or a halogen atom;
• and
• wherein an average of at least one of the X groups for each two aromatic rings to which an X is attached is a halogen atom;
• and
• (II) from about 95 to about 5 percent by weight of at least one aromatic epoxy resin represented by the following formulas III, IV, V, VI, VII, VIII, IX or X ##STR10## wherein A, R, R', X, and a are as defined above;
• each A' is independently a divalent hydrocarbyl group having from 1 to about 12 carbon atoms;
• each B is independently represented by the formula ##STR11## each B' is independently represented by the formula ##STR12## each B" is represented by the formula ##STR13## each Q is independently hydrogen or a hydrocarbyl group having from 1 to about 10 carbon atoms;
• m has a value of n-1;
• m' has a value of n'-1;
• m" has a value of n"-1;
• each n, n' and n" independently has a value from zero to about 3;
• q has a value from zero to about 4;
• each y independently has an average value from 1 to about 5;
• y' has an average value of from zero to about 3, each z and z' independently has a value of from zero to about 3;
• with the proviso that component II does not have any halogen atoms in the meta position with respect to a glycidyl ether group.