Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Reexamination Certificate
2005-07-26
2005-07-26
Mruk, Brian P. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
C510S477000, C560S001000, C560S190000, C526S292100, C526S307100, C526S317100, C526S318400, C526S319000, C526S341000
Reexamination Certificate
active
06921746
ABSTRACT:
Multifunctional polymers containing polymerized units of(a) α-Acyloxyacrylonitrile, α-haloacrylic acid, α-acyloxyacrylic ester and/or α-hydroxyacrylic acid,(b) monoethylenically unsaturated carboxylic acids,(c) vinyl esters of saturated aliphatic monocarboxylic acids and/or vinyl alcohol and optionally(d) other monoethylenically unsaturated monomers copolymerizable with said monomers (a) to (c) and optionally(e) crosslinkers containing at least two ethylenically unsaturated double bondsand having a K value of at least 7 (determined after H. Fikentscher in acetone at 25° C. and a polymer concentration of 1% by weight), processes for preparing multifunctional polymers by copolymerizing monomer mixtures of(a) α-acyloxyacrylonitrile, α-haloacrylic acid and/or α-acyloxyacrylic ester,(b) monoethylenically unsaturated carboxylic acids,(c) vinyl esters of saturated aliphatic monocarboxylic acids and optionally(d) other monoethylenically unsaturated monomers copolymerizable with said monomers (a) to (c) and optionally(e) crosslinkers containing at least two ethylenically unsaturated double bondsin the presence of polymerization initiators that form free radicals and partially or completely hydrolyzing the polymerized monomer units (a) and (c) in the copolymers thus obtainable and use of the multifunctional polymers in laundry detergents and cleaners, to bind polyvalent metal ions, as a stabilizer in textile bleaching and the bleaching of pulp for papermaking.
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Baur Richard
Ott Christian
Perner Johannes
Rau Iris
BASF - Aktiengesellschaft
Mruk Brian P.
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