Process for efficient molecular weight control in copolymerizati

Details Process for efficient molecular weight control in copolymerizati Process for efficient molecular weight control in copolymerizati

1991-03-27

1992-03-31

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526240, 5263182, 526271, C08F 410, C08F22206

Patent

active

051009803

ABSTRACT:
This invention relates to copolymers containing as copolymerized monomer units aliphatic monoethylenically unsaturated dicarboxylic acids such as maleic acid, monoethylenically unsaturated monocarboxylic acids such as acrylic acid and carboxyl-free monoethylenically unsaturated monomers such as alkyl esters of acrylic acid. This invention particularly relates to the use of low levels of copper ions in an aqueous 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.

REFERENCES:
patent: 4314044 (1982-02-01), Hughes
patent: 4659793 (1987-04-01), Yang
patent: 4725655 (1988-02-01), Denzinger

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