4-Dibenzofuransulfonylsaeure | 42137-76-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 4-Dibenzofuransulfonylsaeure
• 英文别名: dibenzofuran-4-sulfonic acid；4-Dibenzofuransulfonic acid
• CAS: 42137-76-8
• 化学式: C₁₂H₈O₄S
• 分子量: 248.259
• InChiKey: XISHFZZASFHUMB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  75.9
• 氢给体数：
  1
• 氢受体数：
  4

文献信息

• THERMOFORMABLE MELAMINE RESIN FOAM WITH PARTICULATE FILLER MATERIAL
  申请人：BASF SE

  公开号：US20150299413A1

  公开（公告）日：2015-10-22

  The present invention relates to a thermoformable melamine-formaldehyde foam comprising from 0.1 to 50 wt % of at least one particulate filling material, wherein the wt % are based on the total weight of filling material plus melamine-formaldehyde precondensate used for foam production, wherein the at least one particulate filling material has a melting point no higher than 220° C. and an average particle diameter in the range from 5 μm to 750 μm, to a process for producing the thermoformable melamine-formaldehyde foam and also to the use of the melamine-formaldehyde foam for acoustical or thermal insulation in building construction, in automobile, ship and track vehicle construction, the construction of spacecraft, in the upholstery industry or for insulating pipework lines.

  本发明涉及一种热成型三聚氰胺-甲醛泡沫，其包含0.1至50重量％的至少一种颗粒填料，其中重量％基于用于泡沫生产的填充材料和三聚氰胺-甲醛预缩合物的总重量，其中至少一种颗粒填料的熔点不高于220℃，平均粒径在5μm至750μm范围内，还涉及生产热成型三聚氰胺-甲醛泡沫的工艺，以及将该三聚氰胺-甲醛泡沫用于建筑隔音或隔热、汽车、船舶和轨道车辆建造、航天器建造、家具行业或用于绝缘管道线的用途。
• Process for the production of inorganic-organic foams
  申请人：Mobay Chemical Corporation

  公开号：EP0056145A1

  公开（公告）日：1982-07-21

  The instant invention is directed to a process for the production of inorganic-organic foams comprising reacting an organic, nonionic hydrophilic polyisocyanate with an aqueous alkali metal silicate in the presence of a catalyst and a blowing agent, characterized in that said aqueous alkali metal silicate contains from 0.1 to 15% by weight, based on the weight of the aqueous alkali metal silicate, of a compound of the formula: wherein A is N, P or S, wherein R, R', R" und R''' may be the same or different and are allyl, vinyl, C, to C17 alkyl or mono- or polyhydroxy substituted alkyl, C6 to C10 aryl or mono- or polyhydroxy substituted aryl, C7 to C22 aralkyl or mono- or polyhydroxy substituted aralkyl, or C7 to C22 alkaryl or mono- or polyhydroxy substituted alkaryl, wherein x is O when A is S, wherein x is 1 when A is N or P, and wherein B ist OH, halogen or OR"" wherein R'''' represents C, to C,2 alkyl, with the proviso that when A is S, B is not OR''''.

  本发明涉及一种生产无机-有机泡沫塑料的工艺，包括在催化剂和发泡剂存在下，使有机非离子亲水性多异氰酸酯与水基碱金属硅酸盐反应，其特征在于，所述水基碱金属硅酸盐含有以水基碱金属硅酸盐重量为基准，按重量计0.1%至15%的式化合物： 其中 A 是 N、P 或 S、 其中 R、R'、R "和 R'''可以相同或不同，并且是烯丙基、乙烯基、C, 至 C17 烷基或单羟基或多羟基取代的烷基、C6 至 C10 芳基或单羟基或多羟基取代的芳基、C7 至 C22 芳烷基或单羟基或多羟基取代的芳烷基，或 C7 至 C22 芳烷基或单羟基或多羟基取代的芳烷基、 其中当 A 为 S 时，x 为 O 当 A 为 N 或 P 时，x 为 1，以及 其中 B 是 OH、卤素或 OR""，其中 R'''' 代表 C,至 C,2 烷基，但 A 为 S 时，B 不是 OR''''。
• Ultralow range fluorometer calibration
  申请人：Ecolab USA Inc.

  公开号：US10852235B2

  公开（公告）日：2020-12-01

  A fluorometer may be used to measure ultralow concentrations of fluorescing species, such as ultralow concentrations of fluorescent tracer passing through a reverse osmosis membrane into a permeate stream. In some examples, the fluorometer may be recalibrated by resetting some but not all of the calibration parameters used to determine the concentration of fluorescent tracer in the permeate based on the measured fluorescent response of the fluorometer. For example, an intercept of a calibration curve may be reset or recalibrated for the fluorometer in situ, potentially providing significant accuracy improvements even though the fluorometer has not undergone a full recalibration.

  荧光计可用于测量超低浓度的荧光物质，例如穿过反渗透膜进入渗透液流的超低浓度荧光示踪剂。在某些示例中，可以根据荧光计测得的荧光响应，通过重新设置用于确定渗透液中荧光示踪剂浓度的部分而非全部校准参数，对荧光计进行重新校准。例如，校准曲线的截距可就地重设或重新校准荧光计，即使荧光计没有经过全面的重新校准，也能显著提高精度。
• Method for quantitatively measuring the concentration of chemicals in aqueous solution
  申请人：SNF HC

  公开号：US10900959B2

  公开（公告）日：2021-01-26

  The disclosure relates to a method for quantitatively measuring concentration in an aqueous solution of a water soluble polymer that is functionalized with at least one tracer, wherein the method involves impregnating a flow assay with a test area, introducing the flow assay into a test reader, and using the test reader to compare test data to a calibration curve so as to determine the concentration of the water-soluble polymer. This method allows the determination of residuals concentration in aqueous solution recovered from different industries, including oil and gas produced water, mining fluids, industrial water systems, and water treatment applications.

  本公开涉及一种定量测量水溶性聚合物水溶液浓度的方法，该聚合物已被至少一种示踪剂官能化，该方法包括用测试区浸渍流动测定仪，将流动测定仪引入测试读取器，并使用测试读取器将测试数据与校准曲线进行比较，从而确定水溶性聚合物的浓度。这种方法可以测定从不同行业回收的水溶液中的残留物浓度，包括石油和天然气生产用水、采矿流体、工业用水系统和水处理应用。
• Tetrazole based corrosion inhibitors
  申请人：ECOLAB USA INC.

  公开号：US10899721B2

  公开（公告）日：2021-01-26

  Disclosed are corrosion inhibitor compounds and compositions useful for preventing or inhibiting corrosion of surfaces found in cooling water applications. In some embodiments, the surfaces may include mild steel, aluminum, brass, copper, galvanized steel, a copper alloy, admirality brass, or any combination thereof. Also disclosed are methods of using the compounds and compositions as corrosion inhibitors. In some embodiments, the corrosion inhibitor compounds and compositions are used in cooling water applications.

  所公开的缓蚀剂化合物和组合物可用于防止或抑制冷却水应用中表面的腐蚀。在某些实施方案中，表面可包括低碳钢、铝、黄铜、铜、镀锌钢、铜合金、钦佩黄铜或它们的任意组合。此外，还公开了将化合物和组合物用作腐蚀抑制剂的方法。在某些实施方案中，缓蚀剂化合物和组合物用于冷却水应用。