Maleic acid/(meth)acrylic acid copolymers useful as calcium ion

Details Maleic acid/(meth)acrylic acid copolymers useful as calcium ion Maleic acid/(meth)acrylic acid copolymers useful as calcium ion

1984-04-09

1985-05-28

Wong, Jr., Harry

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

524425, 524559, 526 89, 526240, 526317, C08F22004

Patent

active

045199205

ABSTRACT:
A copolymer of maleic acid (MA) and (meth)acrylic acid (AA), or a salt thereof, wherein the molar ratio (MA/AA) .gamma. of the constituent monomers is 1.15 to 2.7, the average molecular weight MW is 1000 to 8000, and (.gamma.).times.(MW) is at least 3000. The copolymer is useful as a calcium ion capturing agent, in a process for treating water to inhibit formation of scale surfaces contacted by the water.

REFERENCES:
patent: 4175066 (1979-11-01), Shibazaki et al.

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