知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.031 秒)

    Process for preparing phosphorothioates and phosphates
    3.
    发明授权
    Process for preparing phosphorothioates and phosphates 失效
    制备硫代磷酸酯和磷酸盐的方法

    公开(公告)号：US4814448A

    公开(公告)日：1989-03-21

    申请号：US22459

    申请日：1987-03-06

    申请人： Sterling C. Gatling ,  Karl L. Krumel

    发明人： Sterling C. Gatling ,  Karl L. Krumel

    IPC分类号： C07F9/18 ,  C07F9/58 ,  C07F9/65 ,  C07F9/09

    CPC分类号： C07F9/585 ,  C07F9/18

    摘要： Certain phenyl and N-heterocyclic phosphorothioates and phosphates are prepared by the reaction of an appropriate alkali metal or alkaline earth metal -O-phenyl or N-heterocyclic compound with an appropriate phosphorochloridate or phosphorochloridothioate under alkaline conditions in a liquid reaction medium and in the presence of a tertiary amine catalyst and a nonionic surfactant having a HLB Value of from about 2.5 to about 20 or more.

    摘要翻译： 某些苯基和N-杂环硫代磷酸酯和磷酸盐通过在碱性条件下在液体反应介质中和在存在下通过适当的碱金属或碱土金属-O-苯基或N-杂环化合物与适当的氯代磷酸酯或氯代硫代磷酸酯的反应来制备 的叔胺催化剂和HLB值为约2.5至约20或更高的非离子表面活性剂。

    Edible oil emulsions
    4.
    发明授权
    Edible oil emulsions 失效
    食用油乳剂

    公开(公告)号：US4084012A

    公开(公告)日：1978-04-11

    申请号：US628452

    申请日：1975-11-03

    申请人： Karl L. Krumel ,  Trudy L. Krasnoff ,  Terry H. Fiero

    发明人： Karl L. Krumel ,  Trudy L. Krasnoff ,  Terry H. Fiero

    IPC分类号： A23D7/00 ,  A23L2/56

    CPC分类号： A23L2/56 ,  A23D7/003

    摘要： Improved aqueous edible oil emulsions are obtained by using about 1-20 wt.% of certain water-soluble hydroxy-propylmethyl cellulose ethers as the emulsion stabilizer. These ethers have a thermal gel point of at least 70.degree. C as a 2% aqueous solution, a methoxyl degree of substitution of about 1.12-1.56, a hydroxypropoxyl molar substitution of about 0.10-0.29, and a 2% aqueous solution viscosity of 2-15 cps at 20.degree.C. They are particularly effective in stabilizing homogenized emulsions of citrus flavoring oils used in soft carbonated beverages.

    摘要翻译： 通过使用约1-20重量％的某些水溶性羟丙基甲基纤维素醚作为乳液稳定剂，可获得改进的含水食用油乳液。 这些醚的热凝胶点为2％水溶液为至少70℃，甲氧基取代度为约1.12-1.56，羟丙氧基摩尔取代为约0.10-0.29，2％水溶液粘度为2 在20℃下为-15cps。它们对于软化碳酸饮料中使用的柑橘调味油的均化乳液的稳定性特别有效。

    Preparation of higher alkylesters of carboxylic acids
    5.
    发明授权
    Preparation of higher alkylesters of carboxylic acids 失效
    高级羧酸烷基酯的制备

    公开(公告)号：US5214150A

    公开(公告)日：1993-05-25

    申请号：US724681

    申请日：1991-07-02

    申请人： Ian R. King ,  Karl L. Krumel ,  Simon C. Lee

    发明人： Ian R. King ,  Karl L. Krumel ,  Simon C. Lee

    IPC分类号： C07D213/73

    CPC分类号： C07D213/73

    摘要： Larger (C.sub.6 -C.sub.12) esters of substituted 2-pyridinyloxyalkanoic acids, such as 1-methylheptyl (4-amino-3,5-dichloro-6-fluoro-2-pyridinyloxy)acetate, are prepared in high yield and purity by first preparing the methyl or ethyl ester and then transesterifying with a C.sub.6 -C.sub.12 alcohol. The methyl or ethyl ester can be prepared by alkylation of an alkali metal salt of 4-amino-3,5-dichloro-6-fluoro-2-pyridinol with methyl or ethyl chloroacetate and the transesterification can be carried out in the presence of a tetraalkyl titanate catalyst.

    摘要翻译： 通过首先制备高产率和纯度来制备取代的2-吡啶基亚油酸的较大（C6-C12）酯，例如1-甲基庚基（4-氨基-3,5-二氯-6-氟-2-吡啶氧基）乙酸酯 甲基或乙酯，然后与C6-C12醇进行酯交换。 甲基或乙酯可以通过4-氨基-3,5-二氯-6-氟-2-吡啶酚的碱金属盐与氯乙酸甲酯或乙酯的烷基化来制备，酯交换可以在 钛酸四烷基酯催化剂。

    Self-breaking viscous aqueous solutions and the use thereof in fracturing subterranean formations
    7.
    发明授权
    Self-breaking viscous aqueous solutions and the use thereof in fracturing subterranean formations 失效
    断裂粘性水溶液及其在压裂地下地层中的应用

    公开(公告)号：US3960736A

    公开(公告)日：1976-06-01

    申请号：US475702

    申请日：1974-06-03

    申请人： Dustin L. Free ,  Karl L. Krumel ,  Travis C. Snyder

    发明人： Dustin L. Free ,  Karl L. Krumel ,  Travis C. Snyder

    IPC分类号： C09K8/62 ,  E21B43/26

    CPC分类号： C09K8/62 ,  E21B43/26 ,  Y10S507/921 ,  Y10S507/922

    摘要： Viscous aqueous solutions are prepared which maintain a certain viscosity range over a predetermined period of time (i.e., induction period) and which thereafter break, i.e., decrease in viscosity over a very short period of time. The viscous aqueous solution comprises a polysaccharide having an ability to thicken water and dispersed or dissolved in the aqueous solution an effective quantity of an organic ester which, at a temperature at which it is desired to break the viscous solution, hydrolyzes over a delayed period of time to form an acid which degrades the polysaccharide, thus causing a splitting of the polysaccharide chain and a decrease in the viscosity of the solution.

    摘要翻译： 制备粘性水溶液，其在预定时间段（即诱导期）内保持一定的粘度范围，其后破裂，即在非常短的时间内降低粘度。 粘性水溶液包含具有增稠水分散或溶解在水溶液中的能力的多糖，有效量的有机酯，其在期望破坏粘稠溶液的温度下，在延迟的时间内水解 形成降解多糖的酸的时间，从而导致多糖链的分裂和溶液的粘度降低。

    Removal of potassium chloride from solvents
    10.
    发明授权
    Removal of potassium chloride from solvents 失效
    从溶剂中除去氯化钾

    公开(公告)号：US4994252A

    公开(公告)日：1991-02-19

    申请号：US478127

    申请日：1990-02-09

    申请人： Karl L. Krumel ,  Charles A. Wilson ,  Thad S. Hormel

    发明人： Karl L. Krumel ,  Charles A. Wilson ,  Thad S. Hormel

    IPC分类号： C01D3/06

    CPC分类号： C01D3/06

    摘要： Finely divided potassium chloride is removed from mixtures with polar, aprotic solvents, such as N-methyl-2-pyrrolidinone, by combining the mixture with sufficient water to dissolve a significant portion, but not all of the potassium chloride present, removing the added water by distillation, and subsequently separating the larger crystals of the salt that form by filtration or centrifugation. The amount of water employed is in the same general range as the amount of polar, aprotic solvent present.