MONOLITHIC COLUMN
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Accused Products
Abstract
Permeable polymeric monolithic materials are prepared in a plastic column casing. In one embodiment, the permeable polymeric monolithic materials are polymerized by the application of heat from an external source starting at a low temperature such as 40 degrees centigrade, depending on the mixture and size of the column, and continuing at a higher temperature, such as 60 degrees centigrade. The temperature at the start of the polymerization is low enough so as not to cause exothermal run-away conditions and to avoid high heat of reaction that would prevent a substantially constant temperature across the cross-section of the column. The higher temperature is used after sufficient monomer depletion has occurred and steric interference has increased so the polymerization reaction is sufficiently slow to avoid heat of reaction generation high enough to cause significant reduction in the homogeneousness of the pore sizes.
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Citations
28 Claims
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1. -9. (canceled)
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10. A method of making a disposable chromatographic column comprising the steps of:
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putting a polymerization mixture in a column casing wherein the polymerization mixture comprises a functional monomer containing a sulfonic group; and directly polymerizing the mixture to provide a strong cation exchanger. - View Dependent Claims (11, 12, 13)
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14. A method of forming a chromatographic column comprising the steps of:
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putting a polymerization mixture in a column casing with a polymerization mixture comprising a functional monomer containing a sulfonic group; and directly polymerizing the mixture to provide a strong cation exchanger. - View Dependent Claims (15, 16, 17)
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18. A method of controlling polymerization of a porous medium of a predetermined shape and size suitable for use in a separating device comprising the steps of:
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establishing a polymerization mixture including a porogen in the porous medium; and controlling the polymerization with radiation that penetrates the medium to input energy throughout the medium of the predetermined shape. - View Dependent Claims (19, 20)
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22. A method of controlling polymerization of a porous medium suitable for use in a separating device comprising the steps of:
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establishing a polymerization mixture including a monomer and a porogen; and polymerizing said monomer in the presence of irradiation to control said polymerization. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification