Curable phosphorus-containing flame retardant epoxy resin
AssigneeICL-IP America Inc.
InventorsSergei V. Levchik, Andrew Mieczyslaw Piotrowski, Joseph Zilberman, Stephen J. Chaterpaul
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Abstract
This invention relates to an epoxy resin composition, in particular a curable phosphorus containing flame retardant epoxy resin composition comprising epoxy resin and an epoxy resin chain-extending amount of a diaryl alkylphosphonate and/or diaryl arylphosphonate and a cross-linking agent. The curable flame retardant compositions are useful in e.g., printed wiring boards or molding compounds for electronic applications, protective coatings, adhesives, as well as structural and decorative composite materials.
Claims12
A process for preparing curable flame retardant epoxy resin composition comprising pre-reacting an epoxy resin chain-extending amount of at least one diaryl alkylphosphonate and/or diaryl arylphosphonate with an epoxy resin, in the presence of an effective amount of catalyst, optionally in a solvent, to provide linear epoxy oligomer.
A prereacted curable epoxy resin composition comprising a pre-reacted curable epoxy resin made by the process of pre-reacting an epoxy resin chain-extending amount of at least one diaryl alkylphosphonate and/or diaryl arylphosphonate with an epoxy resin, in the presence of an effective amount of catalyst to provide pre-reacted curable epoxy resin.
Dependencies are inferred from the claim text.