N-phosphono-methylene-monoaminoalkane mono and...

Details N-phosphono-methylene-monoaminoalkane mono and... N-phosphono-methylene-monoaminoalkane mono and...

C - Chemistry, Metallurgy

07

F

260/501.5

C07F 9/38 (2006.01) C02F 5/14 (2006.01) C23F 11/167 (2006.01)

Patent

CA 1062278

ABSTRACT OF THE DISCLOSURE The present invention provides a phosphonic acid selected from N-phosphono-methylene-monoaminoalkane-mono- and polyphos- phonic acids and N-phosphono-methylene-diaminoalkane polyphosphonic acids having the general formula I Image wherein n is 1, 2 or 3, R1 is hydrogen, an alkyl radical containing 1 to 11 carbon atoms in the carbon chain or the groupings -OH, (CH2)nPO3H2, -C2H4OH, - (CH2)nCOOH, Image Image wherein n is as above, R2 is hydrogen or PO3H2; and R3 and R4 are each hydrogen or CH2PO3H2.

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