Abstract: Sustainable end group-capped surface active agents of the formula R1—O—(CH2CH2O)x(CHR3CHR4O)y—C(O)—Z—C(O)—R2??(I) which are based on esterified fatty alcohol polyglycol ethers with a ketocarboxylic acid, in particular levulinic acid, a process for their preparation and their use as low foaming surface active agents in detergent compositions and as rinse aid in machine dishwashing is described.

Abstract: Specific mixtures of methyl ester ethoxylates are described. The mixtures may be advantageously used as surfactants in laundry detergent compositions and preferably in liquid laundry detergent compositions.

Abstract: A laundry detergent composition comprising methyl ester ethoxylate surfactant wherein the methyl ester ethoxylate comprises monounsaturated C18 and wherein the weight proportion of monounsaturated C18 to other C18 components is from 2.9 to 7.0, and wherein the MEE comprises at least 5% of the MEE, C16 MEE, and a domestic method of treating a textile, the method comprising the step of treating a textile with an aqueous solution of 0.5 to 20 g/L of the detergent composition, and optionally drying the textile.

Abstract: A laundry detergent composition comprising at least 4% wt. methyl ester ethoxylate surfactant wherein the methyl ester ethoxylate comprises at least 20% by wt. total MEE, C16 MEE, at least 35% wt. MEE, C18:1 MEE and less than 10% wt. total MEE, C18:0 MEE, and domestic method of treating a textile, the method comprising the step of treating a textile with an aqueous solution of 0.5 to 20 g/L of the detergent composition, and optionally drying the textile.

Abstract: A laundry detergent composition comprising methyl ester ethoxy late surfactant (MEE) and an alkyl ether sulphate (AES), a proportion of which comprises C18 and a domestic method of treating a textile, the method comprising the step of treating a textile with an aqueous solution of 0.5 to 20 g/L of the detergent composition, and optionally drying the textile.

Abstract: Cleaning compositions e.g. containing one or more copolymers comprising structural units a) derived from one or more monomers comprising a sulfonic acid group or a sulfonate group, and structural units b) derived from one or more monomers comprising a carboxylic acid group or a carboxylate group and structural units c) derived from one or more cationic monomers are disclosed. The cleaning compositions are e.g. suited to be used for the treatment of hard surfaces, for easier next time cleaning of hard surfaces and for preventing the build-up of limescale on hard surfaces.

Abstract: The present invention relates to laundry powder detergent compositions comprising: Z1) one or more surfactants on magnesium carbonate carrier and Z2) one or more anionic surfactants which are not present on a carrier. These laundry powder detergent compositions may be used for cleaning of textiles which can be carried out in an automatic washing machine or as manual cleaning.

Abstract: The present invention discloses a testing device and method for simulating longitudinal-transverse-torsional coupled nonlinear vibration of a drill string in deep-water riser-free drilling. The testing device comprises a pool (1), a motor (2) and a hook load adjustment device (3), wherein a guide wheel (4) is provided on the top of the pool (1); a support seat A (5) and a support seat B (6) are fixed on the bottom surface of the pool (1); an organic glass tube (8) is fixed between the support seat A (5) and the support seat B (6); a casing (9) is respectively provided on the top surface of the support seat B (6) and the top surface of the trailer (7); the left end of the plastic tube (10) extends into the organic glass tube (8) along the axis of the organic glass tube (8). The present invention further discloses a simulation method.

Abstract: The present invention discloses a testing device and method for simulating longitudinal-transverse-torsional coupled nonlinear vibration of a drill string in deep-water riser-free drilling. The testing device comprises a pool (1), a motor (2) and a hook load adjustment device (3), wherein a guide wheel (4) is provided on the top of the pool (1); a support seat A (5) and a support seat B (6) are fixed on the bottom surface of the pool (1); an organic glass tube (8) is fixed between the support seat A (5) and the support seat B (6); a casing (9) is respectively provided on the top surface of the support seat B (6) and the top surface of the trailer (7); the left end of the plastic tube (10) extends into the organic glass tube (8) along the axis of the organic glass tube (8). The present invention further discloses a simulation method.

Abstract: A method for minimizing DC capacitance of a cascade multilevel converter is provided. On the basis of balancing of capacitor voltages, the method estimates instantaneous value of the DC side capacitor voltages in a circuit through an energy conservation law, and uses a proportional resonance controller to control a grid-connected current to realize adjustment of the grid-connected current without static difference, such that the cascade multilevel converter can operate in a small capacitance mode, the system volume is greatly reduced, the system cost is reduced, the control is easy to be implemented, and the capacitor voltage is free from overshoot and the system has a better rapidity.

Abstract: A method for minimizing DC capacitance of a cascade multilevel converter is provided. On the basis of balancing of capacitor voltages, the method estimates instantaneous value of the DC side capacitor voltages in a circuit through an energy conservation law, and uses a proportional resonance controller to control a grid-connected current to realize adjustment of the grid-connected current without static difference, such that the cascade multilevel converter can operate in a small capacitance mode, the system volume is greatly reduced, the system cost is reduced, the control is easy to be implemented, and the capacitor voltage is free from overshoot and the system has a better rapidity.

Abstract: A mechanics experiment system for a perforated string in underground perforating blasting of an oil-gas well. The system includes an experiment water pool, a perforated string arranged in the experiment water pool, a signal amplifier, an A/D converter and a computer. The signal amplifier, the A/D converter and the computer are arranged outside the experiment water pool and are sequentially electrically connected; the perforated string includes an oil pipe, a packing tube, a sleeve, an acceleration testing short joint A, a damper, an acceleration testing short joint B and a perforating gun which are sequentially connected from top to bottom.

Abstract: Dimethyl amine oxides comprising farnesyl residues are described. These amine oxides are advantageously suited as surfactants or wetting agents.

Abstract: A mechanics experiment system for a perforated string in underground perforating blasting of an oil-gas well. The system includes an experiment water pool, a perforated string arranged in the experiment water pool, a signal amplifier, an A/D converter and a computer. The signal amplifier, the A/D converter and the computer are arranged outside the experiment water pool and are sequentially electrically connected; the perforated string includes an oil pipe, a packing tube, a sleeve, an acceleration testing short joint A, a damper, an acceleration testing short joint B and a perforating gun which are sequentially connected from top to bottom.

Abstract: The present disclosure is directed to a novel class of toll-like receptor 2-agonistic (TLR2) lipopeptide compounds having specific structures, and synthetic methods of making the compounds. These compounds provide high potency of agonistic activities with human, other than murine, TLR2, and are useful as vaccine adjuvants. Vaccines are perhaps one of the most successful medical interventions against infectious disease.

Abstract: The present disclosure is directed to a novel class of toll-like receptor 2-agonistic (TLR2) lipopeptide compounds having specific structures, and synthetic methods of making the compounds. These compounds provide high potency of agonistic activities with human, other than murine, TLR2, and are useful as vaccine adjuvants. Vaccines are perhaps one of the most successful medical interventions against infectious disease.

Abstract: The formula of deoxidizer and its process is to penetrate and print a designed pattern such as wood texture on the surface of Wood-Plastic Composite (WPC) product. After the penetrate printing, the precise pattern is permanently seamlessly printed and integrated with the surface of the WPC.