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    • 1. 发明授权
    • Use of CMC in drilling fluids
    • 在钻井液中使用CMC
    • US07939469B2
    • 2011-05-10
    • US10575334
    • 2004-10-15
    • Peter Marten Van Der Horst
    • Peter Marten Van Der Horst
    • C09K8/24C08B37/00E21B43/26
    • C09K8/10C09K8/206
    • 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
    • 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')。
    • 4. 发明授权
    • Circuit arrangement for operating a computer having a readback device
for feeding back last-written information to the computer
    • 用于操作具有用于将最后写入信息反馈给计算机的回读装置的计算机的电路装置
    • US5392440A
    • 1995-02-21
    • US877858
    • 1992-05-04
    • Peter Marten
    • Peter Marten
    • G06F9/34G06F12/06G06F13/00
    • G06F12/0638
    • A circuit arrangement for operating a computer, having at least one working register into which and out of which information, under specific addresses, can be read, and a readback device for a feedback occurring in a program step whereby the last-written information is fed back to a processor of the computer. The circuit arrangement includes at least one feedback register to which the working register is assigned. A device is provided for writing the respective information under the same address both to the working register and also to the feedback register for storage therein and for writing new information. A device forwards the information stored in the feedback register to the processor.
    • 一种用于操作计算机的电路装置,具有至少一个工作寄存器,其中可以读取特定地址的哪个信息以及哪个信息可以被读取,以及用于在编程步骤中发生的反馈的回读设备,由此馈送最后写入的信息 回到计算机的处理器。 电路装置包括分配工作寄存器的至少一个反馈寄存器。 提供了一种设备,用于将相同地址下的相应信息都写入工作寄存器,并且还提供给反馈寄存器以存储在其中并用于写入新信息。 设备将存储在反馈寄存器中的信息转发到处理器。
    • 9. 发明授权
    • Method of making amide modified carboxyl-containing polysaccharide and
fatty amide-modified polysaccharide so obtainable
    • 制备酰胺改性含羧基多糖和脂肪酰胺改性多糖的方法
    • US6103885A
    • 2000-08-15
    • US530127
    • 1995-11-14
    • Jan Gerardus BatelaanPeter Marten Van Der Horst
    • Jan Gerardus BatelaanPeter Marten Van Der Horst
    • C08B11/15C08B11/14C08B11/20C08B31/12C08B37/00C07H5/04C07H1/00C08B11/00C08B31/00
    • C08B11/20C08B11/14C08B31/125C08B37/0096
    • 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.
    • 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。