Download e-book for kindle: Chemistry and Technology of Lubricants by Roy M. Mortier, Malcolm F. Fox, Stefan T. Orszulik

By Roy M. Mortier, Malcolm F. Fox, Stefan T. Orszulik

ISBN-10: 140208661X

ISBN-13: 9781402086618

ISBN-10: 1402086628

ISBN-13: 9781402086625

It is a great, short, low-cost creation to the topic, and maybe first-class for its time (1997). even though, there is nearly not anything the following that is not in a far better, newer compilation (2005, CRC) at the similar topic, edited through LR Rudnick. This later paintings by way of CRC, Taylor & Francis, is the absolute most sensible and such a lot entire that has seemed almost about syntheitic lubricants.

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Catalytic de-waxing is highly selective for linear alkanes and, since these molecules have the highest VI characteristics, it is usual for catalytically de-waxed base oil to have lower VIs than solvent de-waxed oils of the same pour point. However, it is interesting to observe that the directly measured low-temperature properties such as cold crank simulator and Brookfield viscosities are actually superior for the catalytic products. This is explained by the fact that the molecules of highest melting point have a tendency to form wax gels and are removed more selectively by the catalytic process.

2010 35 36 M. Brown et al. lubrication such as automobiles, trucks, marine diesels, transmissions and industrial lubricants, as well as aviation and aerospace lubricants. Many compounds have been investigated as possible base stocks for synthetic lubricants, over 25 were identified in 1962 [3], of which seven types have major importance and are considered in this chapter: • • • • • • • polyalphaolefins, alkylated aromatics, polybutenes, aliphatic diesters, polyolesters, polyalkylene glycols, phosphate esters.

The process has a high activation energy and gives low yields of poor-quality products [4]. The use of benzoyl peroxide or a di-tertiary-alkylperoxide allows oligomerisation to take place at lower temperatures than the thermal reaction. Oligomerisation of α-decene using di-tertiary-butylperoxide gave a product with rheological properties similar to the product of BF3 -catalysed oligomerisation [5]. 2 Synthetic Base Fluids 37 However, in general, the free radical process is not amenable to controlling the degree of polymerisation and gives low product yields.

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Chemistry and Technology of Lubricants by Roy M. Mortier, Malcolm F. Fox, Stefan T. Orszulik

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