Fluid loss control additives for oil well cementing compositions
    41.
    发明授权
    Fluid loss control additives for oil well cementing compositions 失效
    油井固井组合物的流体损失控制添加剂

    公开(公告)号:US5228915A

    公开(公告)日:1993-07-20

    申请号:US981921

    申请日:1992-11-23

    摘要: A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a blend of a copolymer (i) of acrylamide/vinyl imidazole in a weight percent ratio of from about 95:5 to 5:95, said copolymer (i) having a molecular weight range of from about 100,000 to 3,000,000, and a copolymer (ii) of vinyl pyrrolidone and the sodium salt of vinyl sulfonate in a weight percent ratio of 80:20 to 20:80, said copolymer (ii) having a molecular weight range of from about 100,000 to 3,000,000. The blend is comprised of a weight percent ratio of copolymer (i) to copolymer (ii) in the range of 20:80 to 80:20. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.

    摘要翻译: 用于固井油,气和水井的固井组合物,包括水,水硬性水泥和有效量的水溶性流体损失添加剂,其由丙烯酰胺/乙烯基咪唑共聚物(i)的共混物组成,其重量百分比为 约95:5至5:95,所述共聚物(i)的分子量范围为约100,000至3,000,000,和乙烯基吡咯烷酮和乙烯基磺酸钠盐的共聚物(ii)的重量比为80: 20至20:80,所述共聚物(ii)的分子量范围为约100,000至3,000,000。 共混物由共聚物(i)与共聚物(ii)的重量百分比的比例在20:80至80:20的范围内组成。 组合物还可任选地包括分散剂如钠盐或钾盐或磺化萘甲醛缩合物。

    Graft copolymers of monosaccharides, oligosaccharides, polysaccharides
and modified polysaccharides, the preparation thereof, and their use
    42.
    发明授权
    Graft copolymers of monosaccharides, oligosaccharides, polysaccharides and modified polysaccharides, the preparation thereof, and their use 失效
    单糖,低聚糖,多糖和改性多糖的共聚物,其制备及其使用

    公开(公告)号:US5227446A

    公开(公告)日:1993-07-13

    申请号:US649063

    申请日:1991-02-01

    IPC分类号: C08F251/00 C11D3/22 C11D3/37

    摘要: Graft copolymers obtainable by free radical-initiated copolymerization of(A) a monomer mixture comprising(a) a monoethylenically unsaturated C.sub.4 - to C.sub.8 -dicarboxylic acid, or an anhydride, alkali metal salt or ammonium salt thereof,(b) a monoethylenically unsaturated C.sub.3 - to C.sub.10 -carboxylic acid, or an alkali metal salt or ammonium salt thereof,(c) if desired another monoethylenically unsaturated monomer which can be copolymerized with monomer (a) and (b), and(d) a monomer containing two or more ethylenically unsaturated, non-conjugated double bonds in the molecule, in the presence of(B) a monosaccharide, oligosaccharide, polysaccharide, oxidatively, hydrolytically or enzymatically degraded polysaccharide, oxidized, hydrolytically or enzymatically degraded polysaccharide, or chemically modified monosaccharide, oligosaccharide or polysaccharide,in the weight ratio (A):(B) of (95 to 20):(5 to 80), a process for the preparation of the graft copolymers, and detergents and cleaners containing the graft copolymers in amounts of from 0.1 to 20% by weight, are described.

    摘要翻译: 通过(A)单体混合物的自由基引发共聚获得的接枝共聚物,其包含(a)单烯键式不饱和C4-C8-二羧酸或其酸酐,碱金属盐或铵盐,(b)单烯属不饱和C3 (c)如果需要,可以与单体(a)和(b)共聚的另一单烯属不饱和单体,和(d)含有两个或更多个单体的单体 在(B)单糖,寡糖,多糖,氧化,水解或酶促降解的多糖,氧化,水解或酶促降解的多糖或化学修饰的单糖,寡糖或多糖的存在下,分子中的烯键式不饱和,非共轭双键 (95〜20):(5-80)的重量比(A):( B):制备接枝共聚物的方法,以及洗涤剂和清洁剂 描述了接枝共聚物的量为0.1-20重量%。

    Water-soluble copolymers and their preparation
    47.
    发明授权
    Water-soluble copolymers and their preparation 失效
    水溶性共聚物及其制备方法

    公开(公告)号:US4914172A

    公开(公告)日:1990-04-03

    申请号:US179477

    申请日:1988-04-08

    CPC分类号: A01N25/26 C08F220/04

    摘要: Water-soluble copolymers having a K value of from 8 to 100 (determined according to H. Fikentscher on sodium salt in aqueous solution at 25.degree. C., a pH of 7 and a polymer concentration of the Na salt of 1% by weight) contain, in polymerized form,(a) not less than 15 mol % of one or more monoethylenically unsaturated C.sub.3 -C.sub.6 -monocarboxylic acids,(b) from 0.5 to 84.5 mol % of one or more ethylenically unsaturated C.sub.4 -C.sub.6 -dicarboxylic acids,(c) from 0 to 20 mol % of one or more hydroxyalkyl esters, where hydroxyalkyl is of 2 to 6 carbon atoms, of monoethylenically unsaturated C.sub.3 -C.sub.6 -carboxylic acids,(d) from 0 to 30 mol % of other water-soluble, monoethylenically unsaturated monomers copolymerizable with (a), (b) and (c),(e) from 0.5 to 15 mol % of a comonomer which possesses two or more ethylenically unsaturated, nonconjugated double bonds and one or more --CO--OH groups and/or their salt with an alkali metal, ammonium or alkaline earth metal base and, if required,(f) up to 10 mol % of one or more comonomers which differ from (e) and possess two or more ethylenically unsaturated, nonconjugated double bonds,are prepared by copolymerization of the monomers (a) to (f) and are used for coating seed.

    摘要翻译: K值为8〜100(根据H.Fikentscher在25℃的水溶液中的钠盐,pH为7,Na盐的聚合物浓度为1重量%)测定的水溶性共聚物, 含有(a)不小于15摩尔%的一种或多种单烯属不饱和C3-C6-一元羧酸,(b)0.5-84.5摩尔%的一种或多种烯属不饱和C4-C6-二羧酸, (c)0至20摩尔%的一种或多种羟烷基酯(其中羟基烷基为2至6个碳原子)为单烯属不饱和C 3 -C 6羧酸,(d)0至30摩尔%的其它水溶性 可与(a),(b)和(c)共聚的单烯属不饱和单体,(e)0.5〜15摩尔%的共聚单体,其具有两个或多个烯属不饱和的非共轭双键和一个或多个-CO-OH基团 和/或其与碱金属,铵或碱土金属碱的盐,如果需要,(f)至多10mol%的o 通过单体(a)至(f)的共聚制备不同于(e)并具有两个或更多个烯属不饱和非共轭双键的共聚单体,并用于涂覆种子。

    Plastic crosscurrent heat exchanger
    48.
    发明授权
    Plastic crosscurrent heat exchanger 失效
    塑料交流热交换器

    公开(公告)号:US4907648A

    公开(公告)日:1990-03-13

    申请号:US264849

    申请日:1988-10-31

    IPC分类号: F28D9/00 F28F21/06

    摘要: A crosscurrent heat exchanger body made up of a stack of joined, parallel flow web plates (1), and a hollow chamber (5) for flow across them between each two successive web plates, with the cover layers (2,2') of successive web plates being sloped toward one another at their ends over the hollow chamber (5) enclosed between them, and being joined tightly to one another over the entire width, is disclosed.

    摘要翻译: 由一堆联接的平行流动腹板(1)和一个中空室(5)组成的交叉热交换器主体,用于在每个两个连续的腹板之间流过它们,并且覆盖层(2,2') 公开了连续的腹板在其两端彼此相对倾斜的空腔(5)上,并且在整个宽度上彼此紧密接合。

    Use of graft polymers based on polyalkylene oxides as grayness
inhibitors in the wash and aftertreatment of textile material
containing synthetic fibers
    49.
    发明授权
    Use of graft polymers based on polyalkylene oxides as grayness inhibitors in the wash and aftertreatment of textile material containing synthetic fibers 失效
    在含有合成纤维的纺织材料的洗涤和后处理中使用基于聚环氧烷作为灰色抑制剂的接枝聚合物

    公开(公告)号:US4904408A

    公开(公告)日:1990-02-27

    申请号:US176333

    申请日:1988-03-31

    CPC分类号: C11D3/3788 C11D3/0036

    摘要: A detergent contains as a grayness inhibitor in the wash and aftertreatment of textile material containing synthetic fibers a graft polymer obtainable by grafting(a) a polyalkylene oxide which has a number average molecular weight of from 300 to 100,000 and is based on ethylene oxide, propylene oxide and/or butylene oxide with(b) N-vinlypyrrolidone and(c) a vinyl ester derived from a saturated monocarboxylic acid containing from 1 to 6 carbon atoms and/or a methyl or ethyl ester of acrylic or methacrylic acid in a weight ratio (a):(b):(c) of from 1:0.3:1 to 1:5:30, the order of the addition of (b) and (c) in the graft copolymerization being immaterial and it being possible for up to 1 mole % of the grafted-on monomers (c) to be hydrolyzed.

    摘要翻译: 洗涤剂在含有合成纤维的纺织材料的洗涤和后处理中含有灰色抑制剂,该接枝聚合物可通过接枝(a)数均分子量为300至100,000并基于环氧乙烷,丙烯的聚环氧烷 氧化物和/或环氧丁烷与(b)N-乙烯吡咯烷酮和(c)衍生自含有1至6个碳原子的饱和一元羧酸和/或丙烯酸或甲基丙烯酸的甲酯或乙酯的乙烯基酯的重量比 (a):(b):(c)为1:0.3:1至1:5:30,接枝共聚中加入(b)和(c)的顺序是无关紧要的, 至1摩尔%的被水解的接枝单体(c)。

    Water-soluble copolymers and their preparation
    50.
    发明授权
    Water-soluble copolymers and their preparation 失效
    水溶性共聚物及其制备方法

    公开(公告)号:US4897458A

    公开(公告)日:1990-01-30

    申请号:US179049

    申请日:1988-04-08

    CPC分类号: C08F220/04 A01N25/26

    摘要: Water-soluble copolymers having a K value of from 15 to 120 (determined according to H. Fikentscher in an aqueous solution of their sodium salt at 25.degree. C., a pH of 7 and a polymer concentration of the Na salt of 1% by weight) contain, in polymerized form,(a) not less than 80 mol % of one or more monoethylenically unsaturated C.sub.3 -C.sub.6 -monocarboxylic acids,(b) from 0.5 to 20 mol % of a comonomer which possesses two or more ethylenically unsaturated, non-conjugated double bonds and one or more --CO--OX groups and/or their salt with an alkali metal, ammonium or alkaline earth metal base, and, if required,(c) not more than 10 mol % of one or more comonomers which differ from (b) and possess two or more ethylenically unsaturated, non-conjugated double bonds, and the said copolymers are prepared by copolymerization of the monomers (a), (b) and, if required (c) in aqueous solution and are used for coating seed.

    摘要翻译: K值为15〜120的水溶性共聚物(根据H.Fikentscher在25℃的钠盐水溶液中测定,pH为7,Na盐的聚合物浓度为1%的聚合物浓度由 重量)含有(a)不小于80摩尔%的一种或多种单烯属不饱和C3-C6-一元羧酸,(b)0.5-20摩尔%的具有两个或更多个烯属不饱和的共聚单体, 非共轭双键和一个或多个-CO-OX基团和/或其与碱金属,铵或碱土金属的碱的盐,如果需要,(c)不大于10摩尔%的一种或多种共聚单体 其不同于(b)并且具有两个或更多个烯键式不饱和的非共轭双键,并且所述共聚物通过单体(a),(b)和(如果需要(c))在水溶液中共聚而制备,并且 用于涂覆种子。