C - Chemistry – Metallurgy – 07 – F
Patent
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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