Preparing monoalkenyl aromatic monomer-maleic half ester...

Details Preparing monoalkenyl aromatic monomer-maleic half ester... Preparing monoalkenyl aromatic monomer-maleic half ester...

C - Chemistry, Metallurgy

08

F

C08F 222/16 (2006.01) C08F 8/44 (2006.01) C08F 212/04 (2006.01)

Patent

CA 2136738

2136738 9325593 PCTABS00028 A process which comprises reacting maleic anhydride and a primary or secondary C1-C18 alcohol to form a maleic half ester, and then polymerizing the half ester and monoalkenyl aromatic monomer in ester solvent in the presence of a catalyst to form a solution of monoalkenyl aromatic monomer-maleic half ester copolymer having a weight average molecular weight of at least 110,000 Daltons. After formation of the copolymer, the reaction solution is neutralized to form a mixture of an alkaline salt solution of the copolymer and solvent and then the solvent is removed from the mixture.

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