Method of manufacturing water-soluble polymer dispersions having high
polymer content
    4.
    发明授权
    Method of manufacturing water-soluble polymer dispersions having high polymer content 失效
    制造具有高聚合物含量的水溶性聚合物分散体的方法

    公开(公告)号:US5541252A

    公开(公告)日:1996-07-30

    申请号:US411668

    申请日:1995-04-12

    摘要: 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.

    摘要翻译: 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。

    Resin binders for foundry molding sands
    6.
    发明授权
    Resin binders for foundry molding sands 失效
    铸造型砂用树脂粘合剂

    公开(公告)号:US4585809A

    公开(公告)日:1986-04-29

    申请号:US579148

    申请日:1984-02-10

    CPC分类号: C04B26/04 B22C1/222

    摘要: An aqueous dispersion of a copolymer comprising:(A) from 20 to 90 percent by weight of an unsaturated carboxylic acid of the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3 are hydrogen, alkyl, or --(CH.sub.2).sub.n COOM and M is a proton or an alkali metal or alkaline earth metal or an ammonium cation, and(B) from 10 to 80 percent of at least one other comonomer different from and copolymerizable with A; methods of making a ready-to-use foundry molding sand by mixing such a dispersion with sand; and such ready-to-use foundry molding sands.

    摘要翻译: 共聚物的水分散体,其包含:(A)20至90重量%的下式的不饱和羧酸,其中R 1,R 2,R 3为氢,烷基或 - (CH 2)n COOM,M为 质子或碱金属或碱土金属或铵阳离子,和(B)10%至80%的至少一种不同于且可与A共聚的其它共聚单体; 通过将这种分散体与砂混合来制备即用型铸造型砂的方法; 和这种即用型铸造型砂。

    Liquid, UV-hardenable coating agent and binder
    8.
    发明授权
    Liquid, UV-hardenable coating agent and binder 失效
    液体,UV可硬化涂料和粘合剂

    公开(公告)号:US4340707A

    公开(公告)日:1982-07-20

    申请号:US198045

    申请日:1980-10-17

    摘要: What is disclosed are a liquid coating and binding agent, hardenable under the influence of ultraviolet radiation, comprising an oligomer of the formula[(CH.sub.2 .dbd.CHCOO).sub.m ROOCC.sub.2 H.sub.4 ].sub.2 Sor[(CH.sub.2 .dbd.CHCOO).sub.m ROOCC.sub.2 H.sub.4 S].sub.p R',and a method for its preparation by the reaction of hydrogen sulfide or of a polymercaptan of the formulaR'(SH)pwith a polyacrylic acid ester of the formula(CH.sub.2 .dbd.CHCOO).sub.m+1 R.

    摘要翻译: 所公开的是在紫外线辐射的影响下可硬化的液体涂层和粘合剂,其包含式[(CH 2 = CHCOO)mROCOC 2 H 4] 2S或[(CH 2 = CHCOO)mROCOC 2 H 4 S] p R'的低聚物, 其通过硫化氢或式R'(SH)p的聚硫醇与式(CH 2 = CHCOO)m + 1R的聚丙烯酸酯的反应制备。

    Method for the production of a low-viscosity, water-soluble polymeric
dispersion
    9.
    发明授权
    Method for the production of a low-viscosity, water-soluble polymeric dispersion 失效
    生产低粘度水溶性聚合物分散体的方法

    公开(公告)号:US5480934A

    公开(公告)日:1996-01-02

    申请号:US241577

    申请日:1994-05-12

    摘要: An aqueous, low-viscosity, water-soluble polymeric dispersion containing a polymer (A) is prepared by copolymerizing monomers:(a1) 99 to 70 weight % of at least one water-soluble monomer,(a2) 1 to 30 weight % of at least one hydrophobic monomer and,(a3) 0 to 20 weight % of at least one amphiphilic monomer, which monomers constitute 100 weight % of the polymers forming material which polymer (A) has an average molecular weight M.sub.W (mean weight) of at least 5.times.10.sup.5 Dalton, said process comprising:a first step i) of reacting said monomer ingredients in an aqueous dispersion in the presence of at least one polymeric dispersing agent (D) thereby preparing a dispersion of polymer (A); and a second step ii) of adding at least one polymeric dispersion agent (D), in an aqueous solution, to the dispersion.

    摘要翻译: 含有聚合物(A)的水溶性,低粘度的水溶性聚合物分散体是通过使单体共聚而制备的:(a1)99-70重量%的至少一种水溶性单体,(a2)1-30重量% 至少一种疏水单体和(a3)0至20重量%的至少一种两亲性单体,该单体构成聚合物形成材料的100重量%,聚合物(A)的平均分子量MW(平均重量)为 所述方法包括:第一步骤i)在至少一种聚合物分散剂(D)的存在下使所述单体成分在水分散体中反应,从而制备聚合物(A)的分散体; 和第二步骤ii)在水溶液中加入至少一种聚合物分散剂(D)至分散体。