Process for producing a modified styrene polymer

Details Process for producing a modified styrene polymer Process for producing a modified styrene polymer

C - Chemistry, Metallurgy

08

F

402/575

C08F 8/00 (2006.01) C08F 12/00 (2006.01)

Patent

CA 1313723

ABSTRACT OF THE DISCLOSURE This invention relates to a p-methyl styrene polymer represented by the following formula: Image Z denotes a group such as a functional group. Poly p-methylstyrene (PPMS) is lithiated by reaction with n-butyllithium. The lithiated PPMS is used to prepare polymers containing functional groups. As an example, a solution of PPMS (MW 260,000), 1.0 g in 20 ml of cyclohexane, was reacted with n-butyllithium, 8.5 mmol, and tetramethylethylenediamine, 8.7 mmol, for 20 hours to obtain a precipitate. The precipitate was dissolved in THF, and CO2 was blown into the solution. The solution was washed with an aqueous solution of HCl and dropped into methanol to obtain a solid polymer having carboxyl group functionality.

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