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77 条记录 (耗时 0.038 秒)

    Process for preparing low molecular weight water-soluble polymers
    61.
    发明授权
    Process for preparing low molecular weight water-soluble polymers 失效
    制备低分子量水溶性聚合物的方法

    公开(公告)号：US4314044A

    公开(公告)日：1982-02-02

    申请号：US152011

    申请日：1980-05-21

    申请人： Kathleen A. Hughes ,  Benjamin B. Kine ,  Graham Swift

    发明人： Kathleen A. Hughes ,  Benjamin B. Kine ,  Graham Swift

    IPC分类号： C08F2/10 ,  C08F2/16 ,  C08F4/40

    CPC分类号： C08F2/10

    摘要： A process for preparing a low molecular weight water-soluble polymer comprises reacting, in an aqueous solution system, a water-soluble monomer selected from the class consisting of (a) acrylic acid, methacrylic acid, acrylamide, acrolein, methacrolein, methacrylamide, N-vinyl pyrollidone, acryloxypropionic acid and mixtures thereof, and (b) water-soluble comonomers of one or more of the monomers of (a) with from about 5-50% of the total monomers present, of a comonomer selected from the class consisting of itaconic acid, fumaric acid, maleic acid, hydroxypropylmethacrylate, hydroxyethylacrylate, hydroxypropylacrylate, hydroxyethylmethacrylate, acrylonitrile, methacrylonitrile, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, t-butylaminoethyl acrylate, 4-vinyl pyridine, beta-hydroxyethyldimethylaminoethyl methacrylate salt, t-butylaminoethyl methacrylate, and mixtures thereof in the presence of a catalyst system which comprises an initiator and a metal salt wherein the molar ratio of the initiator to the metal ion is from about 10:1 to about 150:1 and the initiator is present in an amount of from about 0.5 weight percent to about 35 weight percent based on the weight of the monomers present. An aqueous polymer solution has terminal hydroxyl groups, substantially all of the water which was present during the preparation of the polymer, a solids content of from about 40% to about 60% by weight of the entire composition and said polymer has an average molecular weight of up to 50,000. The polymer is prepared from the monomers set forth above.

    摘要翻译： 制备低分子量水溶性聚合物的方法包括在水溶液体系中，将选自（a）丙烯酸，甲基丙烯酸，丙烯酰胺，丙烯醛，甲基丙烯醛，甲基丙烯酰胺，N - 乙烯基吡咯烷酮，丙烯酰氧丙酸及其混合物，和（b）一种或多种单体（a）的水溶性共聚单体与存在的总单体的约5-50％的共聚单体，所述共聚单体选自 的衣康酸，富马酸，马来酸，羟丙基甲基丙烯酸酯，丙烯酸羟乙酯，丙烯酸羟丙酯，甲基丙烯酸羟乙酯，丙烯腈，甲基丙烯腈，丙烯酸二甲基氨基乙酯，甲基丙烯酸二甲氨基乙酯，丙烯酸叔丁基氨基乙酯，甲基丙烯酸4-乙烯基吡啶，甲基丙烯酸叔丁基氨基乙酯， 在包含引发剂和金属盐的催化剂体系的存在下，其混合物，其中mo 引发剂与金属离子的比率为约10:1至约150:1，并且引发剂的存在量为基于存在的单体重量的约0.5重量％至约35重量％。 聚合物水溶液具有末端羟基，在制备聚合物期间存在的基本上所有的水，固体含量为整个组合物的约40重量％至约60重量％，所述聚合物的平均分子量 高达50,000。 聚合物由上述单体制备。

    Comonomer compositions for production of imide-containing polyamino acids
    65.
    发明授权
    Comonomer compositions for production of imide-containing polyamino acids 失效
    用于生产含酰亚胺的聚氨基酸的共聚单体组合物

    公开(公告)号：US06686441B2

    公开(公告)日：2004-02-03

    申请号：US10307387

    申请日：2002-12-02

    申请人： Graham Swift ,  George H. Redlich

    发明人： Graham Swift ,  George H. Redlich

    IPC分类号： C08G6344

    CPC分类号： A61Q19/00 ,  A61K8/88 ,  A61Q5/02 ,  A61Q5/12 ,  C07C227/40 ,  C08G73/1092 ,  C07C229/24

    摘要： Described are monomer compositions containing aspartic acid and other comonomers, such as monosodium aspartate, and methods for their production. The monomer compositions can be polymerized, particularly by thermal polymerization, to obtain useful and novel imide-containing polyamino acids, i.e., copolymers containing polymerized aspartate units and succinimide units. The invention is also directed to the resulting polymeric materials, their methods of production, and their uses. Uses of the imide-containing polyamino acids include, for example, dispersants in detergents and cleansers, water-treatment chemicals as anti-scalants and corrosion inhibitors, personal-care additives for softening and moisturizing, and many others.

    摘要翻译： 描述了含有天冬氨酸和其它共聚单体如天冬氨酸单钠的单体组合物及其生产方法。 单体组合物可以特别通过热聚合来聚合，以获得有用和新颖的含酰亚胺的聚氨基酸，即含有聚合天冬氨酸酯单元和琥珀酰亚胺单元的共聚物。 本发明还涉及所得的聚合物材料，它们的生产方法及其用途。 含酰亚胺的聚氨基酸的用途包括例如在洗涤剂和清洁剂中的分散剂，作为抗鳞屑剂和防腐剂的水处理化学品，用于软化和保湿的个人护理添加剂等。

    Method of inhibiting sulfate scale in aqueous systems using poly(amino acids)
    69.
    发明授权
    Method of inhibiting sulfate scale in aqueous systems using poly(amino acids) 失效
    使用聚（氨基酸）在水系统中抑制硫酸盐垢的方法

    公开(公告)号：US5658464A

    公开(公告)日：1997-08-19

    申请号：US706142

    申请日：1996-09-20

    申请人： William Mathis Hann ,  Yi Hyon Paik ,  Susan Tabb Robertson ,  Graham Swift

    发明人： William Mathis Hann ,  Yi Hyon Paik ,  Susan Tabb Robertson ,  Graham Swift

    IPC分类号： C02F5/04 ,  C02F5/12 ,  C02F5/14

    CPC分类号： C02F5/086 ,  C02F5/125

    摘要： The present invention provides a method for inhibiting the formation of metal sulfate scale in an aqueous system. Metal sulfate scale formation is inhibited by adding an effective amount of one or more poly(amino acids) and one or more inorganic phosphates to the aqueous system. The poly(amino acids) are a reaction product formed from at least one compound selected from amino acids, amic acids, ammonium salts of monoethylenically unsaturated dicarboxylic acids, and ammonium salts of hydroxypolycarboxylic acids. The present invention also provides a method of inhibiting the formation of metal sulfate scale by adding an effective amount of a poly(amino acid) which contains tyrosine, tryptophan, histidine, arginine or combinations thereof.

    摘要翻译： 本发明提供一种抑制在水性体系中形成金属硫酸盐垢的方法。 通过向水性体系中加入有效量的一种或多种聚（氨基酸）和一种或多种无机磷酸盐来抑制金属硫酸盐形成。 聚（氨基酸）是由选自氨基酸，酰胺酸，单烯键式不饱和二羧酸的铵盐和羟基多羧酸的铵盐中的至少一种化合物形成的反应产物。 本发明还提供了通过添加有效量的含有酪氨酸，色氨酸，组氨酸，精氨酸或其组合的聚（氨基酸）来抑制形成金属硫酸盐垢的方法。

    Process of increasing the molecular weight of water soluble acrylate polymers by chain combination
    70.
    发明授权
    Process of increasing the molecular weight of water soluble acrylate polymers by chain combination 失效
    通过链组合提高水溶性丙烯酸酯聚合物的分子量的方法

    公开(公告)号：US5401807A

    公开(公告)日：1995-03-28

    申请号：US958064

    申请日：1992-10-08

    申请人： Kathleen A. Hughes ,  Graham Swift

    发明人： Kathleen A. Hughes ,  Graham Swift

    IPC分类号： C08F265/04 ,  A61L15/22 ,  A61L15/60 ,  C08F265/00 ,  C08F265/02 ,  C11D3/37 ,  C08G81/02 ,  C08G81/00

    CPC分类号： C11D3/3788 ,  A61L15/225 ,  A61L15/60 ,  C08F265/02

    摘要： A method has been discovered for generating free radicals at saturated carbon atoms on the backbone of acrylate polymers or copolymers. This method is useful for combining at least two polymer chains at the free radical sites on each polymer chain to form a polymer or copolymer product with increased molecular weight and a controlled degree of branching. The polymers and copolymers produced by this process are useful as antiscalants, dispersants, incrustation inhibitors and superabsorbants. They are particularly useful in detergent and cleaning applications.

    摘要翻译： 已经发现一种在丙烯酸酯聚合物或共聚物的主链上产生饱和碳原子上的自由基的方法。 该方法可用于将每个聚合物链上的自由基位点处的至少两个聚合物链组合以形成具有增加的分子量和受控支化度的聚合物或共聚物产物。 通过该方法制备的聚合物和共聚物可用作防垢剂，分散剂，结垢抑制剂和超吸收剂。 它们在洗涤剂和清洁应用中特别有用。