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Title:
PROCESS FOR SEPARATING MIXTURES OF PARTIALLY FLUORINATED OR PERFLUORINATED HYDROCARBON COMPOUNDS
Document Type and Number:
WIPO Patent Application WO1991003442
Kind Code:
A3
Abstract:
PCT No. PCT/DE90/00658 Sec. 371 Date Feb. 28, 1992 Sec. 102(e) Date Feb. 28, 1992 PCT Filed Aug. 28, 1990 PCT Pub. No. WO91/03442 PCT Pub. Date Mar. 21, 1991.A process for separation of mixtures of partially- or perfluorinated hydrocarbon compounds, which optionally contain additional chain members from the heteroatom group nitrogen, oxygen, boron, phosphorus and sulfur and/or can be substituted by further halogen atoms, characterized in that such partially- or perfluorinated compounds, which have an acyclic straight-chain structure and a critical molecule diameter in the range from 4 to 7 ANGSTROM or are substituted by residues with a straight-chain acyclic structure and with a critical molecule diameter in the range from 4 to 7 ANGSTROM , of such partially- or perfluorinated compounds, which have no straight-chain acyclic residues, and whose critical molecule diameter amounts to at least 1.1-fold times the that of the aforementioned straight-chain acyclic residues, in liquid or gaseous phase are separated in that a mixture or a solution of the mixture in an inert organic solvent, the molecular diameter of which is larger that of the aforementioned straight-chain acyclic residue, is contacted with an amount of a molecular sieve sufficient for adsorption, the average pore diameter of which lies in the range of the critical molecule diameter of the aforesaid acyclic residue or up to 30% less, separating the molecular sieve laden predominantly with compounds containing acyclic residues, and desorbing the compounds adsorbed on the molecular sieve.

Inventors:
MEINERT HASSO (DE)
MADER JUERGEN (DE)
Application Number:
PCT/DE1990/000658
Publication Date:
May 02, 1991
Filing Date:
August 28, 1990
Export Citation:
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Assignee:
KALI CHEMIE AG (DE)
International Classes:
A61K9/00; C07B63/00; C07C17/38; C07C17/389; C07C23/36; C07C23/38; C07D207/10; C07D211/38; C07D265/30; C07D295/06; C07D401/06; C07D403/06; (IPC1-7): C07B63/00; C07C17/38; C07C23/36; C07C23/38; C07D265/30; C07D211/38; C07D207/10; C07D401/06
Foreign References:
DD256692A11988-05-18
DE1206424B1965-12-09
DE1178066B1964-09-17
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