Patent ID: 7208554

Claim:
A process for producing polyoxyalkylene phosphonates of the formula: wherein R 1 and R 2 are independently H, C 1 –C 20 alkyl, C 3 –C 20 cycloalkyl, or C 6 –C 20 aralkyl; R 3 is substituted or unsubstituted C 2 –C 20 alkyl, C 4 –C 20 cycloalkyl, or C 8 –C 20 aralkyl; R 4 and R 5 are independently H or C 1 –C 2 alkyl; R 6 is H, C 1 –C 20 alkyl, C 3 –C 20 cycloalkyl, or C 6 –C 20 aralkyl; m and n are independently 1–200, and the moieties to which m and n are subscripted and refer to are either blocked, or randomly spaced, along the chain between the OR 3 and R 6 groups; comprising the steps of reacting a polyalkylene glycol alkenyl ether of the formula: wherein R 4 , R 5 , R 6 , m and n are as identified in the phosphonate formula above and R 7 , R 8 , R 9 , and R 10 are each independently H, C 1 –C 20 alkyl, C 3 –C 20 cycloalkyl, or C 6 –C 20 aralkyl; with a phosphite of the formula: wherein R 1 , and R 2 are as identified in the phosphonate formula above; in the presence of a radical initiator.