摘要:
A description is given of (meth)acrylic acid copolymers comprising methacrylic acid units and units based on isopropanol, the polymer being functionalized with aminoalkylsulfonic acid. In addition, a description is given of a process for the preparation thereof and the use thereof for watertreatment, scale inhibition in mineral oil extraction and corrosion inhibition in aqueous systems.
摘要:
A description is given of (meth)acrylic acid copolymers containing methacrylic acid units, the polymer being functionalized with aminoalkylsulfonic acid. In addition, a description is given of a process for preparation thereof and use thereof for water treatment, scale inhibition in petroleum production and corrosion inhibition in aqueous systems.
摘要:
The invention relates to the use of nondendrimeric, highly functional, hyperbranched polymers as demulsifiers for breaking crude oil emulsions. The hyperbranched polymers are preferably hyperbranched polycarbonates, hyperbranched polyesters, hyperbranched polyethers, hyperbranched polyurethanes, hyperbranched polyureapolyurethanes, hyperbranched polyureas, hyperbranched polyamides, hyperbranched polyetheramines and hyperbranched polyesteramides which are functional groups selected from the group consisting of —OC(O)OR, —COOH, —COOR, —CONHR, —CONH2, —OH, —SH, —NH2, —NHR, —NR2, —SO3H, —SO3R, —NHCOOR, —NHCONH2 and —NHCONHR, where R is an optionally substituted alkyl or aryl radical.
摘要:
The present invention relates to aminocarboxylic esters with EO/PO/BuO block polymers, processes for preparing such compounds and the use of these compounds as emulsion breakers, in particular for crude oil emulsions.
摘要翻译:本发明涉及具有EO / PO / BuO嵌段聚合物的氨基羧酸酯,制备这些化合物的方法以及这些化合物作为乳液破乳剂的用途,特别是用于原油乳液。
摘要:
Disclosed is a storage device for medicaments, comprising a rectangular bottom part with 7 compartments (1) that are separated by partitions (2) and each have an independent pivotable lid (3) such that each compartment (1) can be individually accessed. Seven compartments (1) have a same-sized rectangular horizontal section within the bottom part (4) of the weekly dispenser, while at least one longitudinal side (4.2) of the bottom part (4), more specifically the access side, has a convex wall (4.3), and the top edge (2.3) of all partitions (2) has a uniform curvature having a radius R in the longitudinal direction thereof. The 7 dimensionally stable and elastic lids (3) have an adapted curvature R′ that matches said uniform curvature of the top edge (2.3) of the partitions (2). The closing parts (6) start detaching from one another when pressure is applied to the central or rear region of an arched elastic lid (3).
摘要:
A chamber for the treatment of cells in an electrical field, in which a space is provided to hold the suspension containing the cells and into which extend at least two electrodes. The cells are exposed to an electrical field developed between the electrodes. The chamber is also provided with an accessory vessel removably connected thereto for further treatment of the cells.
摘要:
Disclosed is a storage device for medicaments, comprising a rectangular bottom part with 7 compartments (1) that are separated by partitions (2) and each have an independent pivotable lid (3) such that each compartment (1) can be individually accessed. Seven compartments (1) have a same-sized rectangular horizontal section within the bottom part (4) of the weekly dispenser, while at least one longitudinal side (4.2) of the bottom part (4), more specifically the access side, has a convex wall (4.3), and the top edge (2.3) of all partitions (2) has a uniform curvature having a radius R in the longitudinal direction thereof. The 7 dimensionally stable and elastic lids (3) have an adapted curvature R′ that matches said uniform curvature of the top edge (2.3) of the partitions (2). The closing parts (6) start detaching from one another when pressure is applied to the central or rear region of an arched elastic lid (3).
摘要:
A method for controlling the thickening of aqueous systems comprising silicates, which comprises adding to the aqueous system at least one copolymer of a mean molecular weight Mw of greater than 60 000 g/mol and the copolymer being made up essentially randomly from monoethylenically unsaturated monocarboxylic acids, monoethylenically unsaturated dicarboxylic acids and optionally other ethylenically unsaturated comonomers, the quantitative figures being respectively based on the total amount of all monomers used.