Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-dik

Details Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-dik Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-dik

1985-10-02

1986-12-30

Sneed, Helen M. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus containing

C07F 950

Patent

active

046330208

ABSTRACT:
The invention relates to a novel fluorinated pre-polymer and novel process steps in producing the same. The pre-polymers are quinoxaline materials derived by reaction of diketone linkage containing perfluoro-compounds with an aromatic diamine. The diketone is produced by oxidatively dechlorinating a polychloroketone which may be a monoketone or a bis-ketone. The polychloroketone is produced by reacting a keto-ylid with a chlorinating agent, e.g., chlorine. The keto-ylid is produced by reacting a phosphorane with an acid halide of a polyoxy-perfluoroalkylene oxide wherein the perfluoro-oxyalkylene group contains two or three carbon atoms, and there are present from two to twenty perfluoro-oxyalkylene units in the oligomer. The quinoxalines, the polychloroketones and the diketones hereof are novel products. Cross-linking may be effected with a free radical generator.

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patent: 3449438 (1969-06-01), Freyschlag et al.
patent: 3459804 (1969-08-01), Matthews et al.
patent: 4394322 (1983-07-01), Beach et al.

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