Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1990-02-06
1991-10-08
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
5263171, 526240, 25217423, C08F22202
Patent
active
050555405
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.
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patent: 4857622 (1989-08-01), Bousquet et al.
patent: 4897215 (1990-01-01), Trieselt et al.
patent: 4897220 (1990-01-01), Trieselt et al.
Hughes Kathleen A.
Swift Graham
Nagumo M.
Rohm and Haas Company
Schofer Joseph L.
Vouros James G.
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