| 摘要 |
This invention relates to water-soluble allylphosphonate copolymers which are useful for treating aqueous systems. The allylphosphonate copolymers are characterized as having the formula: <IMAGE> wherein the molar percentage of x in the copolymer is from 1 to 90 percent, the molar percentage of y in the copolymer is from 10 to 99 percent, and the total of x and y being 100 percent; and wherein each R1 is independently selected from the group consisting of hydrogen, lower alkyl groups having from 1 to about 4 carbon atoms and a salt forming cation, R2 and R3 are independently selected from the group consisting of hydrogen, halogen, COOH, CH2COOH, lower alkyl groups having from 1 to about 4 carbon atoms, and phenyl, and A is selected from the group consisting of COOH, CH2COOH, phi COOH, SO3H, CH2SO3H, CH(CH3)SO3H, CH2OCH2CH(OH)CH2SO3H, phi -SO3H, <IMAGE> wherein n=2 to 4, CONH2, CONHCHH3, CON(CH3)2, CONHCH2OH, CONHCH(OH)COOH, CONHC(CH3)2CH2SO3H, COO(CH2)nSO3H, wherein n=2 to 4, and CO(OCH2CH2)nOH wherein n=1 or more, water soluble salts of sulfonate and carboxylate groups.
|
