Patent ID: 9068119
Filing Date: 2015-06-30
Classification: C07F,C08K,C09K

Abstract:
1. A method for producing monohydroxy-functionalized diaikylphosphinic acids, esters or salts comprising the steps of a) reacting a phosphinic acid source (I) with olefins (IV) wherein the reaction is carried out in the presence of a catalyst A to form an alkyiphosphonous acid, salt or ester (II) b) reacting the alkyllphosphonous acid, salt or ester (II) with at least one vinyl ester of a carboxylic acid (V) in the presence of at least one catalyst B to form the monofunctionalized dialkylphosphinic acid derivative (VI) and c) reacting the monofunctionalized dialkylphosphinic acid derivative (VI) in the presence of at least one catalyst C to form the monofunctionalizect dialkylphosphinic acid derivative (III) where R