A metal working fluid having increased resistance to bacterial growth. The metal working fluid includes a cross-linked polymeric ester emulsifier; and an amine represented by the formula (H₂N)_a-Q-(NH₂)_b, where a and b are each integers, and Q is at least one carbon atom. Q may also be represented by X-Y-Z, where a+b ≥ 2; X is a cyclic ring system including 3 to 24 carbon atoms; and Y and Z are groups that include at least one carbon atom directly attached to the cyclic ring system. The metal working fluid may also include a biocide, and may also include an amide that is formed by reacting the amine with a carboxylic acid.

The present invention relates to a method of processing a workpiece comprising contacting a tool and a workpiece to effect a change in the shape of the workpiece, and applying a metalworking fluid to a surface area where the tool and the workpiece are in contact, where the metalworking fluid contains a propoxylate of the formula R-O-(C₃H₆O)_n-H, where R is a branched C₆ to C₂₀ alkyl and n is from 3 to 30. The invention further relates to the metalworking fluid, and to a use of the propoxylate as additive in metalworking fluids.

This invention is directed to a lubricant composition that is comprised of a continuous phase and a discontinuous phase, i.e., a two phase lubricant composition. The continuous phase and the discontinuous phase of the lubricant of this invention are oil or oil type compositions that are essentially insoluble in one another. The lubricant composition is comprised of a continuous phase base oil that is comprised of a low viscosity Group II, III, IV or GTL base stock or a blend of at l east two of the Group II, III, IV and GTL base stocks, optionally including a low viscosity Group V base stock, with the continuous phase base oil having, independently, a viscosity of from 1 to 100 cSt at 100°C. The lubricant composition is further comprised of a discontinuous phase that is comprised of an ester composition having a mean average droplet size of from 0.01 microns to 20 microns, in which the ester composition is comprised of an ester compound having no ether linkages.

Gegenstand der Erfindung sind Zusammensetzungen, enthaltend ein Basis- oder Grundöl, 10 bis 50 Gew.-% Etherpyrrolidoncarbonsäuren der Formel 1 oder deren Salze der Formel (1) worin R¹C₈-C₃₀-Alkyl, C₈-C₃₀-Alkenyl, C₆-C₃₀-AryI, C₇-C₃₀-Alkylaryl, M Wasserstoff, Alkalimetall, Erdalkalimetall oder Ammonium, X C₂-C₆-Alkylen, oder eine Poly(oxyalkylen)gruppe der Formel (2) worin I eine Zahl 1 bis 50, m, n unabhängig von I und voneinander eine Zahl von 0 bis 50, R², R³, R⁴ unabhängig voneinander Wasserstoff, CH₃ oder CH₂CH₃, Y C₂-C₆-Alkylen, sowie einen pH-Regler/Neutralisierungsmittel in einer Menge, so dass eine 5 Gew.-%ige Emulsion der Zusammensetzung in VE-Wasser einen pH zwischen 7 und 11 annimmt.

The present invention relates to a controlled release gel with an ashless component and defined ash-producing component. Further, the invention relates to the use of a controlled release gel with a controlled level of ash-producing (i.e., metal) components for delivery of additives into lubricants wherein the gel has reduced ash and SAPS producing components.

A compound (260) for enhancing lubrication includes nanoparticles (250) having a size less than 100 nm; and a polyphenol derived agent (240) coating an external surface of the nanoparticles (250) for enhancing the lubrication.

La présente invention concerne l'utilisation d'une émulsion eau dans huile (e/h) ou huile dans l'eau (h/e) composée d'une phase huileuse comprenant une ou plusieurs huiles d'origine végétale brutes ou raffinées, au moins un tensio-actif émulgateur non ionique et/ou anionique, et une phase aqueuse comprenant au moins un phyllosilicate, en tant que lubrifiant pour dispositif mécanique, caractérisé en ce que l'émulsion eau dans l'huile ou huile dans l'eau est fluide à température ordinaire.

A polymer-brush-based, surface-modification strategy for friction and wear réduction in hard contact under boundary-lubrication conditions is proposed, specifically for a non-aqueous environment. Surface-initiated Atom Transfer Radical Polymérisation (SI-ATRP) was employed for the synthesis of three différent oil-compatible, hydrophobic polymer brushes based on alkyl methacrylates. This study présents polymérisation kinetics, chemical characterization by means of Fourier transform infrared spectroscopy (FTIR) and surface morphologies observed in atomic force microscopy (AFM). The lubrication properties of the anchored polymers were evaluated macroscopically by means of ball-on-disk methods and on the nanonewton scale by latéral force microscopy (AFM/LFM) and showed significant réduction in friction up to contact pressures as high as 460 MPa. The frictional response of surface-grafted polymers is shown to dépend strongly on the compatibility of the polymer with the chosen lubricating fluid. Their good tribological performances have also been proven with watchmaking lubricants. Thèse results do make the prevent invention a suitable candidate for a watchmaking application (such as at the balance pivot or the escapement) in order to increase the efficiency and reliability of the movements.