2-methacrylamido-2-methyl-propanephosphonic acid and its...

C - Chemistry – Metallurgy – 07 – F

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402/357, 260/501

C07F 9/38 (2006.01) C08F 30/02 (2006.01) C08F 230/02 (2006.01)

Patent

CA 1224802

Abstract of the disclosure 2-Methacrylamido-2-methylpropanephosphonic acid of the formula I Image I is prepared by reaction of 2-methylprop-1-ene-1-phosphonic acid or 2-methylprop-2-ene-1-phosphonic acid the methacrylonitrile in the presence of an equimolar amount of a strong acid. The compound is suitable as such or in the form of its salts as comonomer for the manufacture of copolymers, which are used inter alia as dye- ing auxiliaries and as scale inhibitors.

451923

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