Imparting moisture resistance to epoxies
First Claim
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1. A method of improving moisture resistance of an electrical component, said method comprising:
- providing an epoxy composition comprising a mixture of epoxy resin and alkenylsuccinic anhydride having three carbon branched alkenyl side chains in which at least 90% have a total of 9 carbons, andapplying a coating of said epoxy composition to at least a portion of said electrical component to thereby improve the moisture resistance of said electrical component.
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Abstract
The present invention is directed to a method of imparting moisture resistance to epoxies. Moisture resistant epoxy compositions are formed from epoxies and alkenylsuccinic anhydride (ASA) such as tripropenylsuccinic anhydride (TSA). The epoxy compositions, following cure, show surprisingly improved moisture resistance and retention of properties when exposed to warm, humid environments.
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21 Claims
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1. A method of improving moisture resistance of an electrical component, said method comprising:
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providing an epoxy composition comprising a mixture of epoxy resin and alkenylsuccinic anhydride having three carbon branched alkenyl side chains in which at least 90% have a total of 9 carbons, and applying a coating of said epoxy composition to at least a portion of said electrical component to thereby improve the moisture resistance of said electrical component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 15, 16, 21)
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8. A method of imparting improved moisture resistance to epoxy resins comprising,
adding an alkenylsuccinic anhydride having three carbon branched alkenyl side chains in which at least 90 percent have a total of 9 carbons to an epoxy resin to form a mixture of said alkenylsuccinic anhydride and said epoxy, and curing said mixture.
- 17. An article comprising an electrical component or device insulated with a moisture resistant composition comprising a mixture of epoxy resin and an alkenylsuccinic anhydride having three carbon branched alkenyl side chain in which at least 90% have a total of 9 carbons.
Specification