Imidazolyl derivatives, their use as curing agents in epoxy-resin compositions, and curable epoxy-resin compositions and molded epoxy-resin articles incorporating said imidazolyl derivatives
AssigneeSchering Corporation
InventorsChristian Burba, Werner Mrotzek
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Abstract
The invention relates to new compounds of the general formulas ##STR1## where R is a divalent, optionally branched aliphatic, cyclic or alicyclic hydrocarbon group having from 2 to 10 carbon atoms; R.sup.1 and R.sup.2 are, independently of one another, hydrogen, or aliphatic or aromatic hydrocarbon groups; R.sup.3 is --COOH, --CN, --COOC.sub.2 H.sub.4 --OH, --CONH--NH.sub.2 or --COOR.sup.4 ; R.sup.4 is an aliphatic hydrocarbon group having from 1 to 4 carbon atoms; and n is 2 or 3.
Claims4
A compound of the general formula ##STR15## where R is a divalent, optionally branched aliphatic, cyclic or alicyclic hydrocarbon group having from 2 to 10 carbon atoms;
- R.sup.1 and R.sup.2 are, independently of one another, hydrogen, or an aliphatic or aromatic hydrocarbon group;
- and n is 2 or 3.
A compound of the general formula ##STR16## where R is a divalent, optionally branched aliphatic, cyclic or alicyclic hydrocarbon group having from 2 to 10 carbon atoms;
- R.sup.1 and R.sup.2 are, independently of one another, hydrogen, or an aliphatic or aromatic hydrocarbon group;
- R.sup.3 is --COOH, --CN, --COOC.sub.2 H.sub.4 --OH, --CONH--NH.sub.2 or --COOR.sup.4 ;
- R.sup.4 is an aliphatic hydrocarbon group having from 1 to 4 carbon atoms, and n is 2 or 3.
A method for preparing a curing agent for glycidyl compounds which comprises reacting
- (A) an imidazolyl compound of the general formula ##STR17## where R.sup.1 and R.sup.2 are, independently of one another, hydrogen, or an aliphatic or aromatic hydrocarbon group, and n is 2 or 3, with
- (B) a glycidyl ether of the general formula ##STR18## where R is a divalent, optionally branched aliphatic, cyclic or alicyclic hydrocarbon group having from 2 to 10 carbon atoms, in a molar ratio of (A) to (B) of from 1:2 to 2:1.
Dependencies are inferred from the claim text.