Lubricant additives
Modern mineral base oils are the result of a long and complex distillation and refining processes. The feedstock used is crude oil. This substance is not of uniform quality but consists of several thousands of hydrocarbon compounds in which the elements carbon and hydrogen are present in all molecules and, in part, are bound to other elements. The hydrocarbons can be divided into three main groups: paraffinic, naphthenic and aromatic. Paraffinic hydrocarbons can be further divided into two subgroups: normal paraffinic and iso- paraffinic. Paraffinic hydrocarbons are the best lubricants. The distillation process in the refinery separates the hydrocarbons contained in the crude into cuts based on the molecule size. Furthermore, as many unwanted substances as possible are removed in the process, such as sulphur, aromatic hydrocarbons, paraffin wax, etc. In other words the mineral oil production process is physical cleaning and the end product is so-called paraffinic base oil. Most of the hydrocarbons in the base oil are paraffinic, but it also contains naphthenic and aromatic molecules. When the finished lubricant, such as motor oil, is made of these, several additive compounds are used to improve the base oil properties. The final outcome can also be so-called naphthenic base oil, where most of the hydrocarbons are naphthenic. Their cold properties are excellent.
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Additives are used in a wide range of applications, including the production of , agrochemicals, flavors and fragrances, and cosmetics. Additives can be classified according to the type of property they impart, such as stability, solubility, or viscosity. Additives applications of organic fine chemicals include 1. Stabilizers: These are chemicals that are added to organic fine chemicals to improve their stability, which means that they can help to prevent the decomposition of the chemical over time. Stabilizers can be used to protect against heat, light, moisture, or chemical attack. 2. Solubilizers: These are chemicals that are added to organic fine chemicals to improve their solubility, which means that they can help to dissolve the chemical in a particular solvent or medium. Solubilizers can be used to make organic fine chemicals more compatible with a wide range of solvents, including water, alcohol, and hydrocarbons. 3. Viscosity modifiers: These are chemicals that are added to organic fine chemicals to alter their viscosity, which is a measure of the resistance of a fluid to flow. Viscosity modifiers can be used to make organic fine chemicals more or less viscous, depending on the desired application. 4.Dispersants: These are chemicals that are added to organic fine chemicals to improve their ability to disperse in a medium, such as water. Dispersants can be used to prevent the formation of clumps or aggregates, which can improve the performance of the chemical.
Rd3133 additive package for engine oil cd/cf, cc/sc, cb/sb, cc/sd £¬cd/sf 1. Description Rd3133 is dark brown viscous liquid prepared form varieties of additives, such as excellent detergent, dispersant, antioxidant and corrosion inhibitor and antiwear agent. The recommended treat meet the following classification and specification requirements. 2. The recommended dosage Api Multi/mono Treating rate(wt%) Cd/cf Multi 6.0 Cd/cf Mono 5.5 Cc/sc Multi 3.0 Cc/sc Mono 2.8 Cb/sb Mono 2 Cd/sf Multi 4.5 Cc/sd Multi 3.8 3. Characteristics Item Typical value Test method Density (20¡ãc), kg/m3 Report Gb/t 1884 Flash point (coc) ¡ãc, 170 Gb/t 3536 Kinematic viscosity (100¡ãc), mm2/s Report Gb/t 265 Calcium, wt%, 6.0 Sh/t 0270 Zinc, wt%, 1.6 Sh/t 0226 Phosphorus, wt%, min 1.2 Sh/t 0296 Tbn, mg koh/g, 180 Sh/t 0251 4. Packing and storage The packing, marking, transportation, storage and delivery acceptance should meet the requirements of sh/t0164. It is packed in 200 litre metal drum. Store in dry, clean and ventilating warehouses.
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