Phosphonates, process for their manufacture and organic materia

Details Phosphonates, process for their manufacture and organic materia Phosphonates, process for their manufacture and organic materia

1976-03-04

1978-02-28

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252 484, 106177, 260953, 2603985, C08K 553

Patent

active

040766900

ABSTRACT:
3,5-Dialkyl-4-hydroxyphenylphosphonates or 3,5-dialkyl-4-hydroxyphenylalkylphosphonates are converted into the corresponding 3-halogeno-5-alkyl derivatives by means of a novel process by reacting them with a halogen or a halogenating agent. These compounds are outstanding stabilizers for protecting organic materials against degradation induced by heat and oxygen.

REFERENCES:
patent: 2603662 (1952-07-01), Stevens et al.
patent: 3155704 (1964-11-01), Knapp
patent: 3367870 (1968-02-01), Spivack
patent: 3607950 (1971-09-01), Platz et al.
patent: 3872186 (1975-03-01), Fenyes et al.
German Offenlegungschrift 2312910, Sept. 1974.
J.A.C.S. 75, 734-736(1953), pp. 734-736, Coppinger et al.
JACS-76:4977-4979 (1954) Forman et al.

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