Abstract:
Mit der ansprachsgemäßen Erfindung werden nachhaltige, den Prinzipien der grünen Chemie folgende Systeme zur Korrosionsinhibition bei der Bearbeitung und der Verarbeitung von Metallen (insbesondere von Eisen, Aluminium und Magnesium) in Form von sauren Phosphonsäuren zur Verfügung gestellt. Diese können (ggf. neutralisiert mit Aminen) insbesondere in wässrigen oder ölbasierten Kühlschmierstoffen zum Einsatz kommen. Die erfindungsgemäßen Phosphonsäuren enthalten als organischen Teil einen Terpenrest, ein Terpenoid oder einen Fettsäurerest und können aus den entsprechenden Naturstoffen in einfachen Verfahren mit guten Ausbeuten hergestellt werden. Im Graugußspantest nach DIN 51360-2 und einem Staining Test zeigten die Phosphonsäuren der vorliegenden Erfindung durchweg sehr gute Eigenschaften und zusammen mit geeigneten Aminen zur Neutralisation, werden Systeme zur Korrosionsinhibition zur Verfügung gestellt, die vollständig aus erneuerbaren Quellen zu beziehen sind.
Abstract:
A method of lubricating metal articles (6), in particular those made of steel, comprising the application (4) of a dispersion comprising a lubricant oil and a lubricant powder to an article to be drawn. A drawing method comprising the lubrication as described above and a lubricant dispersion.
Abstract:
The invention is a fluid having a kinematic viscosity from 3 to 6 mm 2 /s, a flash point of higher than 120°C and a pour point lower than -40°C, having a boiling point in the range of from 200°C to 400°C and a boiling range below 80°C, said fluid comprising more than 95% isoparaffins and less than 3% of naphthens by weight, a biocarbon content of at least 95% by weight, containing less than 100ppm aromatics by weight. The invention is also a drilling fluid and the use of the fluid to improve the viscosity of the drilling fluid.
Abstract:
Methods are provided for producing lubricant base oils from petrolatum. After solvent dewaxing of a brightstock raffmate to form a brightstock base oil, petrolatum is generated as a side product. The petrolatum can be hydroprocessed to form base oils in high yield. The base oils formed from hydroprocessing of petrolatum have an unexpected pour point relationship. For a typical lubricant oil feedstock, the pour point of the base oils generated from the feedstock increases with the viscosity of the base oil. By contrast, lubricant base oils formed from hydroprocessing of petrolatum have a relatively flat pour point relationship, and some of the higher viscosity base oils unexpectedly have lower pour points than lower viscosity base oils generated from the same petrolatum feed. The base oils from petrolatum are also unusual in yielding both high viscosity and high viscosity index and can be generated while maintaining a high yield.
Abstract:
Provided are drilling fluids having delay-released lubrication, the drilling fluids comprising a drilling mud and an oleaginous microbial cell, methods of using and making such drilling fluids, and drilling rigs comprising such drilling fluids. Also provided are lubricants comprising an oleaginous microbial cell. Uses for the lubricants include metal working and extreme pressure applications.
Abstract:
The present invention relates to a composition designed to be a release agent applied to the surface of a molding apparatus and method of using the composition in molding operations. The composition includes a siloxane composition, hydrophilic matting particles, a cross linking aent, a binding agent having hydrophobic and hydrophilic characteristics. The composition may optionally include a carrier. The composition is designed to be applied to the surface of a mold, allowing for repeated use without the need for re-applying the composition between uses.
Abstract:
A process for preparing polyoxyalkylene phosphonates in high yield and purity without extensive isolation procedures. The process also enables hydroxy terminated polyoxyalkylene phosphonates to be produced with their attendant high aqueous solubility and the availability of the reactive group to have the end functionality easily molecularly modified. Products produced by these processes have enhanced dispersion, coating, adhesion, and plasticizing characteristics as a result of the lack of any steric hinderance of these polyoxyalkylene phosphonates.
Abstract:
The present invention relates to a process of producing a highly oxidatively stable polyalphaolefin by hydrogenating a polyalphaolefin to greatly decrease its level of unsaturation.
Abstract:
A refrigerating machine oil composition which comprises (A) a hydrocarbon oil and (B) an alicyclic polycarboxylic acid ester compound having an alicyclic ring and at least two ester groups which are represented by the following general formula (1) and at least two of which are bonded respectively to carbon atoms adjacent to each other on the ring: -COOR (wherein R represents a C1-30 hydrocarbon group and R s of all the ester groups may be the same or different).