Preparation of a new viscosity index improver based on a copolymer of vinyl 2-ethyl hexanoate
Journal Article
·
· Lubrication Engineering
OSTI ID:210117
- Ecole Polytechnique, Montreal (Canada)
- Univ. of Tehran (Iran, Islamic Republic of)
Copolymers of different ratios of 2-ethyl hexyl acrylate with vinyl 2-ethyl hexanoate were prepared in benzene solution. The presence of the copolymers was confirmed by solubility, IR and NMR tests as well as by the analysis of the residues obtained by transesterification with sodium methoxide. The molecular weight and the polydispersity of the polymers were estimated by GPC. The polymers were evaluated and compared with currently used products as viscosity improvers in two ISO 20 base oils with different viscosity indices (VIs). Copolymers were fractioned in order to study the effect of the poly-dispersity. From viscosity, viscosity index, the ratio of the specific viscosity at 40{degrees}C and 100{degrees}C (Q value) and shear stability values, the polymers obtained could be used as a VI additive in ISO 20 base oils. 30 refs., 9 figs., 9 tabs.
- OSTI ID:
- 210117
- Journal Information:
- Lubrication Engineering, Journal Name: Lubrication Engineering Journal Issue: 12 Vol. 51; ISSN LUENAG; ISSN 0024-7154
- Country of Publication:
- United States
- Language:
- English
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