Process for the manufacture of phenyl phosphonic acid or its...

Details Process for the manufacture of phenyl phosphonic acid or its... Process for the manufacture of phenyl phosphonic acid or its...

C - Chemistry, Metallurgy

07

F

260/501.1

C07F 9/38 (2006.01)

Patent

CA 1051022

ABSTRACT OF THE DISCLOSURE A process is disclosed for the manufacture of phenylphosphonic acid, alkali metal and ammonium salts of phenylphosphonic acid, and mixtures thereof. In the process a compound selected from the group consisting of phenylphosphinic acid, alkali metal salts of phenylphosphinic acid, ammonium salts of phenylphosphinic acid and mixtures thereof is reacted with hydrogen peroxide in a solvent selected from the group con- sisting of water and alcohols having one to four carbon atoms at a temperature in the range of 60°C to 130°C. Phenylphosphonic acid and/or its salts are useful as additives in synthetic linear polyamides to improve strength, whiteness, dye absorbability, resistance to heat and light degradation and adhesion to rubber.

253830

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