C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/3, 402/306
C11D 1/08 (2006.01) C08F 220/04 (2006.01) C08F 222/00 (2006.01) C11D 3/37 (2006.01)
Patent
CA 2022705
This invention relates to copolymers containing as copolymerized monomer units aliphatic monoethylenically unsaturated dicarboxylic acids such as malefic acid, monoethylenically unsaturated monocarboxylic acids such as acrylic acid and carboxyl-free monoethylenically unsaturated monomers such as alkyl esters of acrylic acid. This inventian particularly relates to the use of low levels of copper ions in an aqueous emulsion polymerization process to promote copolymerization of the above-mentioned monomers at high conversion while maintaining and improving molecular weight control. These copolymers are useful primarily as antiscalants, dispersants, hard surface cleaners, detergent builders and incrustation inhibitors.
Hughes Kathleen A.
Swift Graham
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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