Mixed phenyl/mesityl phosphate ester composition

Details Mixed phenyl/mesityl phosphate ester composition Mixed phenyl/mesityl phosphate ester composition

C - Chemistry, Metallurgy

08

K

6/15.7

C08K 5/52 (2006.01) C07F 9/12 (2006.01) C08K 5/523 (2006.01) C09K 21/12 (2006.01)

Patent

CA 1195807

Abstract: MIXED PHENYL/MESITYL PHOSPHATE ESTER COMPOSITION A mixed phenyl/mesityl phosphate ester composition that is useful as a fire retardant additive, having a phosphorus content of from about 8.2% to about 8.4% is prepared by reacting with agitation at about 120°C to 130°C distilled still bottom phenols with phosphorus oxychloride in the presence of a Friedel-Crafts catalyst to form a reaction product containing a substantial quantity of monoaryl phosphodichloridate and diaryl phosphochloridate. This reaction product is then fur- ther reacted at an elevated temperature with sufficient phenol to form a triaryl phosphate ester mixture. The mixed phenyl/mesityl phosphate ester so obtained remains a liquid at room temperature over a substantial period of time.

418924

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