Material for chromatography
AssigneeCabot Corporation
InventorsGregory Gaudet, Agathagelos Kyrlidis
Life of this patent
Estimating the term…
Abstract
Granulated products are provided and include carbonaceous particles and a carbonized agent or binder. The agent or binder is preferably a synthetic resin, pitch component, or mixture thereof. Packing materials for packing columns used in chromatographic separations are also provided as are methods of chromatographic separation using the materials. In addition, methods are provided to provide a variety of different types of carbonaceous products. A variety of chemical groups can be, prior to heat-treatment and/or thereafter, attached to the granules to form modified granules.
Claims27
1-13. (canceled)
A method of chromatographic separation or solid phase extraction comprising passing a sample having components to be separated through a plurality of granulated products comprising carbonaceous particles and at least one carbonized synthetic resin, carbonized pitch component, or mixtures thereof, wherein said granulated product has attached at least one organic group.
A method of making carbonaceous particles-containing granules comprising:
- mixing carbonaceous particles with:
- at least one synthetic resin, pitch component, or a mixture thereof;
- and a solvent, to form a mixture;
- granulating said mixture to form granules;
- carbonizing said granules;
- and
- attaching at least one organic group to said granules.
(canceled)
A method of making carbonaceous particles-containing granules comprising:
- mixing carbonaceous particles having attached at least one organic group with:
- at least one synthetic resin, pitch component, or a mixture thereof;
- and at least one solvent, to form a mixture;
- granulating said mixture to form granules;
- and
- carbonizing said granules.
39-46. (canceled)
Dependencies are inferred from the claim text.