Resins with high surface areas and porosities
AssigneeE. I. Du Pont de Nemours and Company
InventorsBruce E. Smart, Owen W. Webster
Life of this patent
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Abstract
Organic resins with high surface areas and porosities, which are insoluble in organic solvents and contain few or no flexible groups in the resin structure, are disclosed. Also disclosed is a process for making such resins from polyfunctional aryl alkali metal compounds and a second polyfunctional monomer. Such resins are useful as absorbants.
Claims15
A composition comprising a crosslinked polymeric resin insoluble in common organic solvents and having a surface area of at least 100 m.sup.2 /g and a porosity of at least 20%, and wherein said resin contains less than 10 mole percent, based on the total amount of monomer, of flexibilizing groups.
A composition comprising a crosslinked polymeric resin insoluble in common organic solvents and having a surface area of at least 100 m.sup.2 /g and a porosity of at least 20%, and wherein said resin contains less than 10 mole percent, based on the total amount of monomer, of flexibilizing groups, also containing one or more rigid groups selected from the group consisting of:
- 1,4-phenylene, 4,4'-biphenylene, 4",4-p-terphenylene, 9, 10-anthracenylene, 2,6-anthracenylene, 1,4-naphthalenylene, 2,6-naphthalenylene, 3,3'-biphenylene, bis(4-phenylene)ether, tris(4-phenylene)amine, tetrakis(4-phenylene)methane, bis(4-phenylene) sulfide, 2,2-bis(4-phenylene)propane, tetrakis(4-phenylene)silane and bis(4-phenylene)dimethylsilane.
Dependencies are inferred from the claim text.