Process for producing phenoxyphosphazene compound,...

Details Process for producing phenoxyphosphazene compound,... Process for producing phenoxyphosphazene compound,...

2005-09-20

2005-09-20

Richter, Johann (Department: 1621)

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

Organic compounds

Phosphorus containing

C568S009000, C568S012000, C252S609000, C004S590000, C004S590000, C004S590000, C004S590000

Reexamination Certificate

active

06946578

ABSTRACT:
An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide, or (c) both the adsorbent and reagent, thereby reducing the acid value of said phosphazene compound to lower than 0.025 mgKOH/g.

REFERENCES:
patent: 2109491 (1938-03-01), Lipkin
patent: 3206494 (1965-09-01), Lund et al.
patent: 3996312 (1976-12-01), Kolich et al.
patent: 4108805 (1978-08-01), Dieck et al.
patent: 4440921 (1984-04-01), Allcock et al.
patent: 4551317 (1985-11-01), Li

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