Patent ID: 8178711

Claim:
A method for preparing triorganophosphites, said method comprising: a) contacting an alcohol with PCl 3 in the presence of a triorganoamine to produce a first reaction product comprising one or more organophosphites and triorganoamine hydrochloride; b) removing the triorganoamine hydrochloride from the first reaction product to produce a second reaction product optionally containing one or more triorganophosphites, diorganohydrogenphosphite (R 2 O)(R 3 O)POH, organodihydrogenphosphite (R 1 O)(HO)PO(H) and H 3 PO 3 , wherein R 1 , R 2 and R 3 are independently selected from the group consisting of C 1 to C 18 alkyl, C 6 to C 18 aryl and hydroxyaryl, and C 3 to C 18 cycloalkyl and hydroxyalkyl radicals, and wherein R 2 and R 3 can optionally be connected to each other directly by a chemical bond or through an intermediate divalent group R 9 , wherein R 9 is selected from the group consisting of —O—, —S—, and —CH(R 12 )—, wherein R 12 is selected from the group consisting of H, C 6 to C 18 aryl, and C 1 to C 18 alkyl; and c) removing at least a portion of one or more of the compounds diorganohydrogenphosphite (R 2 O)(R 3 O)POH, organodihydrogenphosphite (R 1 O)(HO)PO(H) and H 3 PO 3 by contacting the second reaction product with a basic additive.