Preparation of hydroxyphenyl phosphine oxide mixtures

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United States of America Patent

PATENT NO 9388340
APP PUB NO 20140217337A1
SERIAL NO

13757945

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Abstract

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A hydroxyphenyl or alkoxyphenyl phosphine oxide composition comprising (i) a first mixture of mono-(hydroxyphenyl) or (alkoxyphenyl)phosphine oxide isomers, (ii) a second mixture of bis-(hydroxyaryl) or (alkoxyphenyl)phosphine oxide isomers, (iii) a third mixture of tris-(hydroxyaryl) or (alkoxyphenyl)phosphine oxide isomers, and optionally iv) a minority amount of non-hydroxy or non-alkoxy tris-phenyl phosphine oxides is provided. Also provided are epoxy resins compositions with excellent flame retardancy and physical properties, which resins comprise the phosphine oxide composition.

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Patent Owner(s)

Patent OwnerAddress
LANXESS SOLUTIONS US INC199 BENSON ROAD MIDDLEBURY CT 06749

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hanson, Mark V West Lafayette, US 29 100
Siebecker, James D West Lafayette, US 15 37
Timberlake, Larry D West Lafayette, US 44 139

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