Phosphorus containing block polymers of polyphenylene oxide

Details Phosphorus containing block polymers of polyphenylene oxide Phosphorus containing block polymers of polyphenylene oxide

1977-05-26

1979-05-29

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

528168, 528169, 528213, C08G 6544, C08G 6548

Patent

active

041566998

ABSTRACT:
Phosphorus containing linear, branched and/or crosslinked block polymers of polyphenylene oxides are described which comprise di- and/or tri-functional phosphoryl radicals coupled with mono- and/or polyphenoxy radicals, said polyphenoxy radicals being derived from (a) polyphenylene oxides having an average hydroxyl group per molecule value greater than zero including 1.0 or less, or (b) polyphenylene oxide-quinone coupled polymers having an average hydroxyl group per molecule value greater than zero including 2.0 or less, and mixtures thereof. The resulting polyphenylene oxides can be used to prepare flame-retardant polyphenylene oxide articles of manufacture.

REFERENCES:
patent: 3429850 (1969-02-01), Holoch
patent: 3635890 (1972-01-01), Takemura et al.

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