申请人:——
公开号:US20030236178A1
公开(公告)日:2003-12-25
Multifunctional polymers containing polymerized units of
(a) &agr;-Acyloxyacrylonitrile, &agr;-haloacrylic acid, &agr;-acyloxyacrylic ester and/or &agr;-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 bonds
and 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) &agr;-acyloxyacrylonitrile, &agr;-haloacrylic acid and/or &agr;-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 bonds
in 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.
含有以下聚合单元的多功能聚合物
(a) 乙氧基丙烯腈、卤代丙烯酸、乙氧基丙烯酸酯和/或羟基丙烯酸、
(b) 单乙烯不饱和羧酸、
(c) 饱和脂肪族单羧酸的乙烯基酯和/或乙烯基醇,以及可选的
(d) 可与上述单体(a)至(c)共聚的其他单乙烯基不饱和单体,或
(e) 含至少两个乙烯不饱和双键的交联剂
K 值至少为 7(经 H. Fikentscher 在丙酮中于 25°C、聚合物浓度为 1%(按重量计)测定),通过共聚以下单体混合物制备多功能聚合物的工艺
(a) 乙氧基丙烯腈、卤代丙烯酸和/或乙氧基丙烯酸酯、
(b) 单乙烯基不饱和羧酸、
(c) 饱和脂肪族一元羧酸的乙烯基酯,以及可选的
(d) 可与上述单体(a)至(c)共聚的其他单乙烯不饱和单体,以及
(e) 含至少两个乙烯不饱和双键的交联剂
在形成自由基的聚合引发剂存在下,部分或完全水解由此得到的共聚物中的聚合单体单元(a)和(c),并将多功能聚合物用于洗衣粉和清洁剂、结合多价金属离子、作为纺织品漂白和造纸纸浆漂白的稳定剂。