Production of hyrolysed polymaleic anhydride

C - Chemistry – Metallurgy – 07 – C

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260/522.2

C07C 55/24 (2006.01) C08F 8/12 (2006.01) C08F 222/06 (2006.01)

Patent

CA 1274249

ABSTRACT OF THE DISCLOSURE Production of hydrolysed polymaleic anhydride The invention provides a process for the production of hydrolysed polymaleic anhydride which comprises heating a reaction mixture comprising (a) maleic anhydride, (b) a reactive aromatic solvent, (c) an alcohol or glycol having up to 4 carbon atoms or esters of such an alcohol or glycol with maleic acid, and (d) di-tertiary butyl peroxide, and then hydrolysing the resulting polymer.

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