Synthesis and Tribological Characteristics of Oligoorganosiloxanes with Higher n-Alkyl Substituents

Synthesis and Tribological Characteristics of Oligoorganosiloxanes with Higher n-Alkyl Substituents A procedure was developed for hydrosilylation of α-olefins with oligohydrosiloxanes, and a series of comb-shaped organosiloxanes of the general formula R3SiO(R2SiO)m(RR'SiO)nSiR3 (where R is CH3, C2H5; R' is n-alkyl C8-C18) with random distribution of dimethylsiloxane (or diethylsiloxane) and methylalkylsiloxane (or ethylalkylsiloxane) units were obtained. The physicochemical characteristics of these oligomers were studied, with particular attention given to their lubricating properties (diameter of the wear spot and critical jamming load), which were compared to those of lubricating oils based on organosilicon compounds (PMS-100, KhS-2-1) and hydrocarbon-based MS-20 oil. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Synthesis and Tribological Characteristics of Oligoorganosiloxanes with Higher n-Alkyl Substituents

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Chemistry; Chemistry/Food Science, general
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1023/A:1012734520104
Publisher site
See Article on Publisher Site

Abstract

A procedure was developed for hydrosilylation of α-olefins with oligohydrosiloxanes, and a series of comb-shaped organosiloxanes of the general formula R3SiO(R2SiO)m(RR'SiO)nSiR3 (where R is CH3, C2H5; R' is n-alkyl C8-C18) with random distribution of dimethylsiloxane (or diethylsiloxane) and methylalkylsiloxane (or ethylalkylsiloxane) units were obtained. The physicochemical characteristics of these oligomers were studied, with particular attention given to their lubricating properties (diameter of the wear spot and critical jamming load), which were compared to those of lubricating oils based on organosilicon compounds (PMS-100, KhS-2-1) and hydrocarbon-based MS-20 oil.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Oct 13, 2004

References

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