Process for the preparation of polyalkenyl derivatives of...

Details Process for the preparation of polyalkenyl derivatives of... Process for the preparation of polyalkenyl derivatives of...

C - Chemistry, Metallurgy

08

F

C08F 222/02 (2006.01) C08F 8/46 (2006.01)

Patent

CA 2082913

T 1627 FF A B S T R A C T PROCESS FOR THE PREPARATION OF POLYALKENYL DERIVATIVES OF UNSATURATED DICARBOXYLIC ACID MATERIALS The invention provides a process for the preparation of a polyalkenyl derivative of a monoethylenically unsaturated C4-10 dicarboxylic acid material wherein the ratio of dicarboxylic acid moieties per polyalkenyl chain is less than 1.2:1, which comprises reacting a polyalkene having Mn in the range 950 to 5000 with a monoethylenically unsaturated C4-10 dicarboxylic acid material in mol ratio dicarboxylic acid material: polyalkene greater than 1:1 at a temperature in the range 150 to 260°C in the presence of a polyaddition-inhibiting amount of a sulphonic acid. PS25/T1627FF.DOC

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