Substituted cyclohexane-1,2-dicarboxylic anhydrides and epoxy resins containing same
AssigneeMilliken Research Corporation
InventorPatrick D. Moore
Life of this patent
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Abstract
In accordance with the present invention, there is provided a substituted cyclohexane-1,2-dicarboxylic anhydride (CHDA) having the structural formula: ##STR1##
Claims16
A substituted CHDA having the structural formula:
- ##STR10##
A substituted CHDA composition which comprises a predominant amount of a compound of the formula:
- ##STR11## and a minor amount of a compound of the formula:
- ##STR12##
An epoxy curing agent composition which comprises a monoanhydride epoxy curing agent, and a substituted CHDA having the structural formula:
- ##STR13##
A curable epoxy resin composition comprising an epoxy resin and an epoxy resin curing agent, wherein the epoxy resin curing agent is represented by the formula:
- ##STR14##
A curable epoxy resin composition which comprises an epoxy resin and an epoxy resin curing agent composition, said composition comprising a monoanhydride epoxy curing agent and a substituted CHDA having the structural formula:
- ##STR15##
In a method for curing an epoxy resin composition comprising incorporating an epoxy resin curing agent into an epoxy resin and heating the combination of the epoxy resin and the epoxy curing agent, the improvement which comprises said epoxy resin curing agent being represented by the formula:
- ##STR16##
A process for preparing a substituted cyclohexane-1,2-dicarboxylic anhydride which comprises reacting 100 parts by weight of 4-methyl tetrahydrophthalic anhydride with from about 15 to about 75 parts by weight of maleic anhydride at a temperature of from about 150.degree. C. to about 300.degree. C. for a period of time sufficient to form substantial amounts of substituted cyclohexane-1,2-dicarboxylic anhydride in a crude reaction product.
Dependencies are inferred from the claim text.