摘要:
A method for converting amino ether alcohols to amino ether amines by amination in the vapor phase with a catalyst comprising copper and zinc. The catalyst may also comprise an alkali, alkaline earth, or lanthanide element as a promoter.
摘要:
Surfactant compositions containing compounds according to structure (I), and methods of making them, are disclosed. The compounds provide reduced dynamic and equilibrium surface tension, good solubility, moderate foaming, and good cleaning performance. The methods for making them involve reaction of N-(polyhydroxyalkyl)-alkylamines with dinitriles, dialdehydes, or acetals or hemiacetals of dialdehydes in the presence of hydrogen and a transition metal catalyst. In structure (I), x is an integer from about 1 to 12, R1 and R2 are independently C3-C30 linear alkyl, cyclic alkyl, branched alkyl, alkenyl, aryl, alkylaryl, alkoxyalkyl, and dialkylaminoalkyl; and R3 and R4 are independently hydrogen or a pyranosyl group such as α-D-glucopyranosyl, β-D-glucopyranosyl, or β-D-galactopyranosyl.
摘要:
A system and method utilizes an image analysis approach for controlling the probe-to-surface distance of a liquid junction-based surface sampling system for use with mass spectrometric detection. Such an approach enables a hands-free formation of the liquid microjunction used to sample solution composition from the surface and for re-optimization, as necessary, of the microjunction thickness during a surface scan to achieve a fully automated surface sampling system.
摘要:
A debris evacuation apparatus and method evacuates debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus has at least one seal and one groove located south of the seal, with the seal blocking northward travel of debris and directing it to the groove. Ports within the groove permit debris to enter the debris evacuation apparatus. Interior to the debris evacuation apparatus, the entering debris will become mixed with pumped fluid, and will be drawn out of the pumping system with the pumped fluid. The pumped fluid passing through the debris evacuation apparatus will be caused to rotate by a screw-in insert located at a south portion of the debris evacuation apparatus, utilizing a plurality of angled veins surrounding a closed center section located at a north end of the screw-in insert.
摘要:
A shock absorbing apparatus and method includes a shaft travelling north and south within a tube. The tube is positioned south of a sucker rod. The shaft has a piston head coupled at a south end thereof, which piston head is received in an area of reduced diameter with the shaft. North pores and south pores permit the movement of fluid into and out of the interior of the tube, in response to the northward/southward movement of the piston head. Fluid entering through the pores provides a shock absorbing effect on both the upstroke and the downstroke. The shock absorbing effect on the upstroke can be rapidly eliminated and an upward shock force generated, through the shearing of a shear pin that maintains a bushing in position on the shaft, restricting northward travel of the piston head.
摘要:
A composition of matter having the following structure: where X is S or Se; and Y is NH, O, S, or Se; and R is an H, a C1-8F3-17 primary, secondary, or tertiary fluoroalkyl, a C1-20 primary, secondary or tertiary alkyl, or a halogen atom, and a composition of matter comprising polymerized units having the following structure: where X is S or Se; and Y is NH, O, S, or Se; and R is an H, a C1-8F3-17 primary, secondary, or tertiary fluoroalkyl, a C1-20 primary, secondary or tertiary alkyl, or a halogen atom.
摘要:
Certain substituted amines, alkylenediamines or polyamines, and derivatives of these, are suitable for use in preventing, inhibiting, or otherwise modifying crystalline gas hydrate formation. These inhibitors include compounds from any of the following groups. The substituents R1-R5 may be hydrocarbyl groups or, in some cases, polyhydroxyalkyl groups or (CH2)P—COO— in which p is either 1 or 2.
摘要:
A pumping apparatus and method incorporates at least one and preferably as many as four components that are configured to improve debris removal capabilities as compared to prior art apparatuses. The apparatus and method impart cyclonic motion to pumped fluid, in a manner that tends to separate entrained solids and other impurities, and further that helps draw solid impurities away from the pump barrel. In a preferred embodiment, a cyclonic effect first occurs in a seat plug having a funnel-shaped accumulator region leading to an interior passage therethrough, and at least one off-center opening extending from the interior passage to the exterior of the plug. In one embodiment, that effect is continued at a plunger adapter that has a plurality of inward-angled rings, and that also features off-center openings through which debris may pass to the interior of the plunger adapter. A top plunger adapter may also be provided, having angled veins and openings therethrough to impart cyclonic motion to the pumped fluid as it exits the interior of the top plunger adapter. Finally, it may also be desired to provide a cage having angled veins, to continue the cyclonic effect on the fluid as it travels northward and into the pump barrel.
摘要:
A debris evacuation apparatus and method evacuates debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus has at least one seal and one groove located south of the seal, with the seal blocking northward travel of debris and directing it to the groove. Ports within the groove permit debris to enter the debris evacuation apparatus. Interior to the debris evacuation apparatus, the entering debris will become mixed with pumped fluid, and will be drawn out of the pumping system with the pumped fluid. The pumped fluid passing through the debris evacuation apparatus will be caused to rotate by an interior section located at a south portion of the debris evacuation apparatus, utilizing a plurality of angled veins surrounding a closed center section located at a north end of the interior section.
摘要:
A method for protecting pump components by coating moving components with an amorphous carbon material. Components that preferably receive such coating include the plunger, barrel, traveling valve ball and seat, and standing valve ball and seat. Other components may also be coated. The coating thickness is preferably in the range of between about 0.0002″ and 0.030″. In one embodiment, at least two coating layers are applied, with the coating layers having different colored appearances so as to facilitate inspection for wearing away of the coating material.