Rubber-modified epoxy compounds
AssigneeThe Dow Chemical Company
InventorsDavid E. Henton, Dale M. Pickelman, Charles B. Arends, Victor E. Meyer
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Abstract
Epoxy resins contain a discontinuous phase dispersed therein, of grafted rubber particles having an insoluble rubber core and having a grafted shell containing a functionalized compound such as that provided by polymerized glycidyl methacrylate, which is reactive under curing conditions with a functionality of the epoxy resin phase. The dispersions are stable and are useful as curable coatings, and for providing toughened resins for structural applications.
Claims18
An epoxy resin composition suitable for preparing toughened cured epoxy resins, comprising (1) an epoxy resin continuous phase and (2) a stabilized discontinuous phase of reactive grafted rubber particles, which particles have a resin-insoluble core grafted with a shell which is reactive under curing conditions with a functionality of the epoxy resin phase.
A process for providing toughened epoxy resins, said process comprising (1) dispersing in an epoxy resin continuous phase, a toughening amount of reactive grafted rubber particles which have a resin-insoluble core grafted with a shell which is reactive under curing conditions with a functionality of the epoxy resin, and (2) subjecting the resin and particle dispersion to conditions sufficient to cure the epoxy resin.
Dependencies are inferred from the claim text.