Abstract:
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) an antiwear improving amount of at least one molybdenum containing composition, and (B) at least one member selected from the group consisting of (i) at least one borated overbased metal salt of an acidic organic compound, provided that (A) and (Bi) are not the same, (ii) a combination of (a) at least one organic polysulfide or at least one ashless dithiocarbamate containing composition and (b) at least one component selected from the group consisting of a metal thiophosphate, a phosphoric acid ester or salt thereof, a phosphorus-containing carboxylic acid, ester, ether, or amide, a borated dispersant, an alkali metal borate, a borated fatty amine, a borated phospholipid, a borate ester, and mixtures thereof, and (iii) a combination of (i) and (ii).
Abstract:
An aqueous release aid composition is disclosed that comprises a stable emulsion of an alcohol, a fatty acid or oil, lecithin, a water soluble or water dispersible surfactant, and water. Methods of preparing such aqueous release aid compositions and methods of imparting release characteristics to various release surfaces and various viscous masses using the aqueous release aid compositions of the invention are also disclosed.
Abstract:
A combination of sulfur-free azoles, preferably benzotriazole and tolyltriazole, with sulfur-containing azoles, preferably 2-mercaptobenzothiazole or mercaptobenzimidazole, prevents discoloration, staining, or corrosion of metal surfaces being coated with an organic protective coating from aqueous dispersion or solution.
Abstract:
The invention concerns the use of mixed hydroxydes of bivalent and trivalent metals with a three-dimensional space-lattice structure of the garnet type to control the thixotropic thickening of aqueous preparations, using swellable clays and/or other swellable layer-silicate compounds of natural and/or synthetic origin as visosity-increasing agents. The preferred garnet-type mixed hydroxydes are catoites of the basic structure Ca3Al2(OH)12 a minor proportion of whose OH units can be exchanged for acid groups, in particular silicate groups.
Abstract:
The invention concerns a nitrite-free wet dressing agent for preventing the contamination of rollers and corrosion of the rolled sheet, the dressing agent containing a carboxylic acid and an amine, characterized in that the nitrite-free aqueous wet dressing agent consists of at least 2-20 % by wt of a monovalent with 6-20 C-atoms or a divalent with 4-12 C-atoms aliphatic and/or aromatic and/or arylaliphatic carboxylic acid, 0-10 % by wt of boric acid, 0.1-10 % by wt of an N-acylated derivative of N-methylglycine of the general formula (I) in which R = a saturated or unsaturated C11-C19 alkyl group and M = H, Li, Na, K, ammonium or alkanolammonium, 0-5 % by wt of a water-hardness-complexing agent, 0-0.5 % by wt of a perfuming agent, an amine which forms a salt with said carboxylic acid in aqueous solution and which is added in a quantity such that the pH-value is between 8 and 11, the remainder consisting of water. The invention also concerns a process for finishing steel strip, using this aqueous wet dressing agent.
Abstract:
A novel lubricant composition which processes high and positive friction characteristics and comprises (a) at least 20 % by weight of a polymer medium; (b) at least 5 % by weight of a solid lubricant; and (c) at least 5 % by weight of a powderized solid mineral friction modifier.
Abstract:
La présente invention concerne un procédé de réduction de l'acidité totale de compositions frigorigènes comprenant au moins un fluide frigorigène avec au moins un lubrifiant, ledit procédé comprenant au moins une étape de mise en contact de ladite composition avec au moins un adsorbant zéolithique à base de poudre de zéolithe(s) ou d'agglomérés de zéolithe(s).
Abstract:
Cutting fluids for brittle materials, e.g., silicon ingot, comprise, in weight percent: A. 70-99% polyalkylene glycol (PAG), e.g., polyethylene glycol; B. 0.01-10% PAG-grafted polycarboxylate; and C. 0-30% water. These cutting fluids are used with abrasive materials, e.g., silicon carbide (SiC), to form cutting slurries. The slurry is sprayed on the cutting tool, e.g., a wire saw, to cut a brittle work piece, e.g., a silicon ingot.
Abstract translation:用于脆性材料例如硅锭的切削液包含重量百分比:A.70-99%的聚亚烷基二醇(PAG),例如聚乙二醇; B. 0.01-10%PAG接枝的聚羧酸酯; 和0-30%的水。 这些切削液与研磨材料(例如碳化硅(SiC))一起使用以形成切割浆料。 将浆料喷涂在切割工具,例如线锯上,以切割脆性工件,例如硅锭。
Abstract:
L'invention concerne l'utilisation d'un film ou d'un revêtement à couche mince supraglissante pour améliorer l'aptitude à la lubrification d'une pièce destinée à être soumise à des frottements importants et à une usure importante. Le film utilisé dans l'invention pour améliorer l'aptitude à la lubrification de pièces destinées à être soumises à une usure importante et à des frottements importants, comprend au moins : une couche (3) en un matériau dur choisi parmi le nitrure de titane (TiN), le nitrure de chrome (CrN), le carbure de titane (TiC), le carbure de chrome (CrC), le carbure de tungstène (W 2 C), et les composites carbure de tungstène-carbone (WC/C), l'alumine (Al 2 O 3 ), le sulfure de molybdène (MoS 2 ), et les matériaux du type carbone amorphe hydrogéné (a : CH), la couche comportant sur une de ses faces une succession de cuvettes et de reliefs; une couche (4) en un matériau oléophile. L'invention trouve application dans le domaine de la mécanique, en particulier.