Particulate sealant for filter plug forming
AssigneeCorning Incorporated
InventorsMichelle D. Fabian, Shahid G. Lakhwani, Mia K. Roberts
Life of this patent
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Abstract
A particulate sealant for forming plugs in selected cells of honeycomb structures and consisting essentially, by weight, of about 70 to 90% ceramic blend, the ceramic blend being raw ceramic materials selected to form a composition consisting essentially of in percent by weight about 12 to 16% MgO, about 33 to 38% Al2O3, and about 49 to 54% SiO2, which will form cordierite (2MgO.2Al2O3.5SiO2) on firing, and about 10 to 30% binder system comprising a thermoplastic polymer capable of forming a gel or a thermosetting resin.
Claims15
A particulate sealant for forming plugs in selected cells of honeycomb structures and consisting essentially, by weight, of:
- about 80 to 85% ceramic blend, the ceramic blend being raw ceramic materials selected to form a composition consisting essentially of in percent by weight about 12 to 16% MgO, about 33 to 38% Al2O3, and about 49 to 54% SiO2, which will form cordierite (2MgO.2Al2O3.5SiO2) on firing, and
- about 15 to 20% binder system comprising a thermoplastic polymer capable of forming a reversible gel or a thermosetting resin.
A material in powder form for sealing the end of selected cells of honeycomb structures and consisting essentially, by weight, of:
- about 78 to 84% ceramic blend, the ceramic blend being raw ceramic materials selected to form a composition consisting essentially of in percent by weight about 12 to 16% MgO, about 33 to 38% Al2O3, and about 49 to 54% SiO2, which will form cordierite (2MgO.2Al2O3.5SiO2) on firing, and
- about 16 to 28% binder system, the binder consisting essentially, by weight, of about 9.5-15.0% low melting wax, about 5% thermoplastic polymer, and about 2 dispersant.
Dependencies are inferred from the claim text.