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    Use of CMC in drilling fluids
    1.
    发明授权
    Use of CMC in drilling fluids 有权
    在钻井液中使用CMC

    公开(公告)号：US07939469B2

    公开(公告)日：2011-05-10

    申请号：US10575334

    申请日：2004-10-15

    Applicant: Peter Marten Van Der Horst

    Inventor： Peter Marten Van Der Horst

    IPC: C09K8/24 ,  C08B37/00 ,  E21B43/26

    CPC classification number: C09K8/10 ,  C09K8/206

    Abstract: The invention relates to a water-based drilling fluid composition comprising a carboxymethyl cellulose (CMC), wherein the CMC is characterized by forming a gel at 25° C. after high-shear dissolution in a 0.3 wt % aqueous sodium chloride solution, the final content of the CMC in the aqueous sodium chloride solution being I wt % for a CMC having a degree of polymerization of >4,000, 1.5. wt % for a CMC having a DP of >3,000-4,000, 2 wt % for a CMC having a DD of 1,500-3,000, and 4 wt % for a CMC having a DP of

    Abstract translation: 本发明涉及包含羧甲基纤维素（CMC）的水基钻井液组合物，其中CMC的特征在于在高剪切溶解于0.3wt％氯化钠水溶液中的25℃下形成凝胶，最后 对于聚合度> 4000的CMC，氯化钠水溶液中CMC的含量为I wt％。 对于具有> 3,000-4,000的DP的CMC，对于DD为1,500-3,000的CMC为2重量％，DP为<1,500的CMC为4重量％，所述凝胶为具有储存 当在0.2的应变振荡流变仪上测量时，在0.01-10Hz的整个频率区域上超过损耗模量（G“）的模量（G'）。

    Hydrophobically modified anionic cellulose ethers
    2.
    发明授权
    Hydrophobically modified anionic cellulose ethers 失效
    疏水改性阴离子纤维素醚

    公开(公告)号：US06627751B1

    公开(公告)日：2003-09-30

    申请号：US09455103

    申请日：1999-12-06

    Applicant: Jan Gerardus Batelaan ,  Berend Jan Dijk ,  Peter Marten Van Der Horst

    Inventor： Jan Gerardus Batelaan ,  Berend Jan Dijk ,  Peter Marten Van Der Horst

    IPC: C08B1100

    CPC classification number: C08B11/20 ,  C08B11/193 ,  C08B31/08 ,  C08B37/0096

    Abstract: A hydrophobically modified anionic cellulose ether obtainable by a process comprising reacting an alkali metal cellulose with at least three alkylating reagents A, B, and C. Reagent A is selected from the group of haloacetic acids, alkali metal haloacetates, alkali metal vinyl sulfonates, and vinyl sulfonic acid. Reagent B has the formula R1—(OCH2CH(R2))n—P, wherein R1 represents a C2-C7 group, R2 is hydrogen or a methyl group, n is 0-2, and P represents a glycidyl ether group, a 3-halo-2-hydroxypropyl ether group, a 1,2-epoxy group, or a halide, and reagent C has the formula R3—(OCH2CH(R2))m—P, wherein R3 represents a C8-C30 group, m is 0-10, and R2 and P have the meaning as described above.

    Abstract translation: 通过包括使碱金属纤维素与至少三种烷基化试剂A，B和C反应的方法获得的疏水改性阴离子纤维素醚。试剂A选自卤代乙酸，碱金属卤代乙酸盐，碱金属乙烯基磺酸盐和 乙烯基磺酸。 试剂B具有式R 1 - （OCH 2 CH（R 2））n P，其中R 1表示C 2 -C 7基团，R 2是氢或甲基，n是0-2， 并且P表示缩水甘油醚基，3-卤代-2-羟丙基醚基，1,2-环氧基或卤化物，试剂C具有式R 3 - （OCH 2 CH（R 2） ）mP，其中R 3表示C8-C30基团，m为0-10，R 2和P具有如上所述的含义。

    Method of making amide modified carboxyl-containing polysaccharide and fatty amide-modified polysaccharide so obtainable
    3.
    发明授权
    Method of making amide modified carboxyl-containing polysaccharide and fatty amide-modified polysaccharide so obtainable 失效
    制备酰胺改性含羧基多糖和脂肪酰胺改性多糖的方法

    公开(公告)号：US6103885A

    公开(公告)日：2000-08-15

    申请号：US530127

    申请日：1995-11-14

    Applicant: Jan Gerardus Batelaan ,  Peter Marten Van Der Horst

    Inventor： Jan Gerardus Batelaan ,  Peter Marten Van Der Horst

    IPC: C08B11/15 ,  C08B11/14 ,  C08B11/20 ,  C08B31/12 ,  C08B37/00 ,  C07H5/04 ,  C07H1/00 ,  C08B11/00 ,  C08B31/00

    CPC classification number: C08B11/20 ,  C08B11/14 ,  C08B31/125 ,  C08B37/0096

    Abstract: The Invention pertains to a process for the amidation of a material having at least one carboxyl-containing polysaccharide. The provided process involves a first step in which the carboxyl groups are reacted with an ammonium donor of the general formula >NH to form the corresponding polysaccharide carboxyl ammonium salt, and a second step in which the polysaccharide carboxyl ammonium salt is heated so as to convert the ammonium groups into the corresponding amido groups. The invention also pertains to fatty amide modified carboxyl-containing polysaccharides, and particularly to fatty amide modified carboxymethyl cellulose. The products in accordance with the invention can be widely employed, e.g. in the field of biodegradable plastics, as anti-redeposition agents for synthetic fibers, as polymeric emulsifiers, as pigment dispersing agents, in cosmetic applications, as thickeners, as oil drilling fluids, as superabsorbers, and in mineral processing.

    Abstract translation: PCT No.PCT / EP94 / 00990 Sec。 371日期：1995年11月14日 102（e）日期1995年11月14日PCT 1994年3月28日PCT公布。 公开号WO94 / 24169 日期：1994年10月27日本发明涉及具有至少一种含羧基多糖的材料的酰胺化方法。 所提供的方法包括第一步骤，其中羧基与通式> NH的铵供体反应以形成相应的多糖羧基铵盐，第二步是将多糖羧基铵盐加热以转化 铵基团进入相应的酰氨基。 本发明还涉及脂肪酰胺改性的含羧基多糖，特别是涉及脂肪酰胺改性的羧甲基纤维素。 根据本发明的产品可以被广泛使用，例如， 在可生物降解塑料领域，作为合成纤维的抗再沉积剂，作为聚合乳化剂，作为颜料分散剂，在化妆品应用中，作为增稠剂，作为石油钻井液，超吸收剂和矿物加工。

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