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    • 2. 发明授权
    • Method of manufacturing water-soluble polymer dispersions having high
polymer content
    • 制造具有高聚合物含量的水溶性聚合物分散体的方法
    • US5541252A
    • 1996-07-30
    • US411668
    • 1995-04-12
    • Gunter SchmittJoachim CarlManfred BraumPeter QuisPetra Schliessmann
    • Gunter SchmittJoachim CarlManfred BraumPeter QuisPetra Schliessmann
    • C08F2/16C08F2/20C08J3/03C08J3/07C08L33/00C08L55/00C08L101/00C09K17/18D21H17/34D21H21/10
    • C08J3/03C08L55/005C09K17/18D21H17/34D21H21/10C08J2300/14
    • The invention relates to a process for the preparation of low viscous, water soluble polymer dispersions on an aqueous basis with a high concentration of the active substance, containing a polymerizate A) synthesized from the monomeric components, hydrophobic monomers and optionally amphiphilic monomers, which exhibit an average molecular weight M.sub.w of at least 5.times.10.sup.5 Dalton and contain at least one polymeric dispersing agent D), where in a first step an aqueous dispersion PD) is prepared from the polymerizate A) and at least one polymeric dispersing agent D); in a second step an aqueous, highly concentrated dispersion PD') is prepared from the aqueous dispersion PD) by extracting the water; and in a third step an aqueous dispersion PD") with a high content of the active substance is prepared through the addition of an aqueous dispersion of at least one polymeric dispersing agent D) to the concentrated dispersion PD'), and where the second and third process step can be repeated in succession.
    • PCT No.PCT / DE94 / 01214 Sec。 371日期:1995年4月12日 102(e)日期1995年4月12日PCT 1994年10月14日PCT PCT。 WO95 / 11269 PCT公开号 日期1995年04月27日本发明涉及一种在水性基础上制备低浓度水溶性聚合物分散体的方法,所述分散体含有高浓度的活性物质,其含有由单体组分合成的聚合物A),疏水单体和任选的 其表现出至少5×10 5道尔顿的平均分子量Mw并且含有至少一种聚合物分散剂D),其中在第一步骤中,由聚合物A)和至少一种聚合物分散剂制备水分散体PD) D); 在第二步中,通过萃取水从水分散体PD)制备水溶液,高度浓缩的分散体PD'); 并且在第三步中,通过将至少一种聚合物分散剂D)的水性分散体加入到浓缩分散体PD')中制备具有高含量活性物质的水分散体PD“),其中第二 并且可以连续重复第三处理步骤。
    • 5. 发明授权
    • Crosslinked water-soluble polymer dispersions
    • 交联的水溶性聚合物分散体
    • US5840804A
    • 1998-11-24
    • US816900
    • 1997-03-13
    • Joachim CarlPeter QuisManfred BraumWolfram Desch
    • Joachim CarlPeter QuisManfred BraumWolfram Desch
    • B01D21/01C02F1/56C08F2/10C08F2/18C08F2/20D21H17/45D21H21/10C08L33/08
    • D21H21/10B01D21/01C02F1/56C08F2/10D21H17/455
    • A method of producing low-viscosity water-based water-soluble polymer dispersions having a high concentration of the principal substance is achieved by polymerizing the following monomer components, (a1) 50-99.999 wt. % of at least one water-soluble monomer; (a2) 0.001-1 wt. % of at least one crosslinking monomer with at least two ethylenically unsaturated radically polymerizable groups; (a3) 0-30 wt. %, particularly 1-25 wt. %, of at least one hydrophobic monomer; and (a4) 0-25 wt. %, particularly 0.1-15 wt. %, of at least one amphiphilic monomer, in aqueous solution, in the presence of at least one polymer dispersant, to form a polymer (A), where the sum of the amounts of the components represented by the monomers (a1), (a2), (a3), and (a4) is 100 wt. % of the monomers, the weight average molecular weight of the resulting polymer (A) is at least 500,000 Dalton, and polymer (A) is incompatible with the dispersant.
    • 通过聚合下列单体组分,可以得到具有高浓度主要物质的低粘度水溶性聚合物分散体的方法:(a1)50-99.999重量% %的至少一种水溶性单体; (a2)0.001-1重量% 至少一种具有至少两个烯属不饱和自由基聚合基团的交联单体的% (a3)0-30重量% %,特别是1-25wt。 %,至少一种疏水性单体; 和(a4)0-25wt。 %,特别是0.1-15wt。 %的至少一种两亲性单体,在水溶液中,在至少一种聚合物分散剂的存在下,形成聚合物(A),其中由单体(a1),(a2 ),(a3)和(a4)为100重量%。 %的单体,所得聚合物(A)的重均分子量为至少500,000道尔顿,聚合物(A)与分散剂不相容。