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Lubricants isoparaffin

Different treatments provide lubricant bases having accentuated isoparaffinic structures these are the bases from hydrorefining, hydrocracking and hydroisomerization (see paragraph 10.3.2.2.c.2). [Pg.277]

Process oils are not typical lubricants and are mostly used as processing aids in manufacture. They are generally additive-free mixtures of crude oil hydrocarbons and include products such as (i) medicinal white oils, (ii) technical white oils, (iii) bright process oils and (iv) dark process oils. Medicinal white oils are composed exclusively of isoparaffins and alkylnaphthenes. Technical white oils are less refined products than medicinal white oils and are composed of saturated hydrocarbons, though they may also contain a slight amount of aromatic compounds. Bright process oils include both yellow raffinates and brown distillates. Dark process oils are extracts from solvent refining of mineral base oils. [Pg.285]

Figure 16-3. Viscosity index and structural types in lubricating oil. (a) Commercial solvent-extracted lubricating stocks. (b) Aromatic-free fractions. 1 Non-condensed cycloalkanes. 2 Condensed cycloalkanes. 3 Isoparaffins. 4 Aromatics. From data by Andre and O Neal [11]. Figure 16-3. Viscosity index and structural types in lubricating oil. (a) Commercial solvent-extracted lubricating stocks. (b) Aromatic-free fractions. 1 Non-condensed cycloalkanes. 2 Condensed cycloalkanes. 3 Isoparaffins. 4 Aromatics. From data by Andre and O Neal [11].
In 1929 E. W. Dean and G. H. B. Davis,4 of Standard Oil, used this representation for viscosities to develop the VI concept for lubricant feedstocks, intermediates, and base stocks. In modified form, this method for describing the viscosity-temperature relationship for base stocks and lubricants has become one of the bedrocks of the industry. The VI of a base stock now immediately brings to mind, rightly or wrongly, other features of interest to lubricants professionals, for example, oxidation stability and chemical composition (e.g., content of isoparaffins and cycloparaffins), and more recently, volatility. It is, however, best to regard this method as a means to express the rheological properties (the science of flow) of a base stock and use other more specific tests to measure other properties. [Pg.44]

Vista LPA. [Vista] Mixts. of hydrotreated isoparaffins and naphthroes solvents for food plics., pesticides, coatings, water, paper, and mining chemicals, textile lubricants, diemical processing, printing inks. [Pg.401]

Uses Solvent for screen inks, coil coatings, paint strippers, hand cleaners, graffiti removers intermediate for detergents, lubricants, emulsifiers, wetting agents, plasticizers replacement for wh. spirit, isoparaffins, glycols, glycol ethers, ketones, aromatic compds. [Pg.341]

Commercial fine powder PTFE resins are produced in a range of very high molecular weight (10 to 3 x 10 ). This powder is processed by forming a paste by the addition of an isoparaffin lubricant. This paste is then extruded into tubing, wire insulation, tape, or membrane. Typically, the extruded shape is dried in an oven and the lubricant is removed. In the final step, the dried extrudate is sintered in an oven. [Pg.26]


See other pages where Lubricants isoparaffin is mentioned: [Pg.277]    [Pg.368]    [Pg.228]    [Pg.543]    [Pg.228]    [Pg.466]    [Pg.180]    [Pg.577]    [Pg.543]    [Pg.469]    [Pg.240]    [Pg.252]    [Pg.239]    [Pg.6]    [Pg.180]    [Pg.219]    [Pg.220]    [Pg.247]    [Pg.147]    [Pg.82]    [Pg.167]    [Pg.103]    [Pg.374]    [Pg.2575]   
See also in sourсe #XX -- [ Pg.26 ]




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