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US 4,942,215 AGranted
Thermosetting liquid composition containing a polyepoxide and a tricarboxylic isocyanurate
AssigneeEnichem Synthesis S.p.A.
InventorsAlberto Greco, Luigi Raisa
Life of this patent
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Abstract
A thermosetting liquid moulding composition comprising: (a) a polyepoxide containing at least two epoxide groups per molecule; (b) a tricarboxylic acid definable by the general formula: ##STR1## where: R.sup.1, R.sup.2 and R.sup.3 have the meaning given in the description; and (c) a diacarboxylic acid anhydride. This composition can be transformed by liquid moulding into manufactured articles particularly useful in the electrical sector.
Claims9
A thermosetting liquid molding composition comprising:
- (a) a liquid polyepoxide containing at least two epoxide groups per molecule;
- (b) a liquid tricarboxylic acid having the formula ##STR4## where:
- R.sup.1, R.sup.2 and R.sup.3, which can be identical or different, independently are selected from the group consisting of an alkylene group containing from 1 to 14 carbon atoms;
- an alkenyl group containing from 2 to 14 carbon atoms;
- an unsubstituted monocyclic or bicyclic alkylene or alkenyl group having from 6 to 10 carbon atoms in the ring;
- a monocyclic or bicyclic alkylene or alkenyl group having from 6 to 10 carbons in the ring substituted with at least one alkyl group;
- a phenylene group;
- or a phenylene group substituted with at least one halogen atom;
- and
- (c) a liquid anhydride of a dicarboxylic acid selected from methyltetrahydrophthalic anhydride, methylnadic anhydride and dodecenylsuccinic anhydride;
- wherein for each epoxide equivalent of component (a) said composition contains from 0.04 to 0.09 equivalents of said tricarboxylic acid (b) and from 0.48 to 0.82 moles of said anhydride (c).
8 more elements
Dependencies are inferred from the claim text.