Claims
- 1. In the method of preparing a carbon molecular sieve by carbonizing a precursor polyvinylidene chloride polymer the improvement comprising impregnating said precursor polymer with additional vinylidene chloride monomer from which said polymer was derived and polymerizing said monomer to increase the density of said precursor polymer and the resulting carbon molecular sieve.
- 2. The method of claim 1 wherein the precursor polymer density is increased up to about 125%.
- 3. The method of claim 1 wherein said precursor polymer is free of a crosslinking agent.
- 4. The method of claim 3 wherein said precursor polymer is prepared by suspension polymerization of vinylidene chloride.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of U.S. Ser. No. 07/906,995, filed Jul. 1, 1992.
US Referenced Citations (5)
Non-Patent Literature Citations (1)
Entry |
Matranga et al., Chem. Eng. Sci. vol. 47, No. 7, pp. 1569-1579. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
906995 |
Jul 1992 |
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