Phosphorus containing block polymers of polyphenylene oxide

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

C - Chemistry, Metallurgy

08

G

400/2019

C08G 81/00 (2006.01) C08G 65/38 (2006.01) C08G 79/04 (2006.01)

Patent

CA 1128686

RD 7281 ABSTRACT OF THE DISCLOSURE 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 oxidequinone 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.

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