C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
253/128, 196/53
C10B 13/00 (2006.01) C08F 8/04 (2006.01) C08F 8/50 (2006.01) C11D 9/00 (2006.01) C11D 9/02 (2006.01) C11D 17/08 (2006.01)
Patent
CA 1036586
ABSTRACT OF THE DISCLOSURE: Synthetic lubricating oils are obtained by subjecting a polymer having a viscosity in the range of 250 to 15,000 cSt at 210°F and a boiling point higher than 175°C, prepared by polyme- rizing normal alpha-olefines having t?? general formula R-CH = CH2 wherein R is an alkyl radical containing from 2 to 16 carbon atoms, in the presence of a TiCl4/polyiminoalane catalyst and in an atmosphere of an inert gas and/or hydrogen having a hydrogen pressure of less than 1 kg/cm2, to a catalytic cracking carried out at atmospheric pressure and at a temperature of from 250 to 300°C, the volume of liquid per volume of catalyst per hour being com- prised between 0.1 to 5, distilling the resulting product under vacuum up to a head temperature, referred to atmospheric pressure, of 400°C and subjecting the residue having a boiling point higher than 400°C to a catalytic hydrogenation. The oils produced by this process have a high viscosity index, very low pour point, low viscosity at 0°F, high thermal stability, high resistance to depolymerization, high flash point and very low carbon residue.
194659
Floris Telemaco
Girotti Pierleone
Tesei Renato
Na
Snamprogetti S.p.a.
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