Patent GB-358495-A (GB)
Title: Improvements in the manufacture and production of high quality lubricating oils
IPC: C10G71/00
Filed: 1930-05-29
Abstract: Lubricating oils are produced by condensing or polymerizing liquid olefines obtained from saturated aliphatic compounds, together with paraffinic hydrocarbons in the presence of a condensing agent.  As the paraffinic hydrocarbon component, tars, mineral oils, or distillates or destructive hydrogenation or cracked products thereof may be used.  The liquid olefines preferably contain more than 5 carbon atoms, and may be produced by strongly cracking solid paraffins or oils, for example at 450-500 DEG  C. under elevated pressure in the presence of methane, or by dehydrating alcohols. During condensation gaseous olefines such as ethylene, may be passed in under pressure.  The p  components may be condensed together, or one component may be partially polymerized, the second component added and condensation then completed.  8 parts of aluminium chloride are added in small amounts to 100 parts of a liquid product obtained by cracking paraffin wax, cooling being employed in the later stages if desired.  Thereafter 200 parts of a destructive hydrogenation product of brown coal tar freed from phenol and of B.P. 225-325 DEG C. are mixed in and heated to 105 DEG  C. while adding a further 16 parts of aluminium chloride.  When condensation is complete the reaction product is poured into brine to decompose the double compound of aluminium chloride and the resulting oil is washed with brine, dried and fractionated.  The product may be mixed with gas machine oil.  Aluminium chloride may be replaced by zinc, tin or iron chlorides, boron fluoride or hydrofluoric acid, or complex acid compounds such as zinc chloride-acetic acid, boric acid or by a bleaching earth such as tonsil.  In the multi-stage condensation a different condensing agent may be used in each stage. Specification 327,382 [Class 2 (iii), Dyes &c.], is referred to.ALSO:Lubricating oils are produced by condensing or polymerizing liquid olefines obtained from saturated aliphatic compounds, together with paraffinic hydrocarbons in the presence of a condensing agent.  As the paraffinic hydrocarbon component, tars, mineral oils, or distillates, or destructive hydrogenation or cracked products thereof may be used. The liquid olefines preferably contain more than 5 carbon atoms, and may be produced by strongly cracking solid paraffins or oils for example at 450 DEG  to 500 DEG  C. under elevated pressure in the presence of methane, or by dehydrating alcohols.  During condensation gaseous olefines such as ethylene may be passed in under pressure. The components may be condensed together, or one component may be partially polymerized, the second component added and condensation then completed.  Eight parts of aluminium chloride are added in small amounts to 100 parts of a liquid product obtained by cracking paraffin wax, cooling being employed in the later stages if desired. Thereafter 200 parts of a destructive hydrogenation product of brown coal tar freed from phenols, and of B.P. 225 DEG  to 325 DEG  C. are mixed in and heated to 105 DEG  C. while adding a further 16 parts of aluminium chloride.  When condensation is complete the reaction product is poured into brine to decompose the double compound of aluminium chloride, and the resulting oil is washed with brine, dried and fractionated.  Aluminium chloride may be replaced by zinc, tin, or iron chlorides, boron fluoride, or hydrofluoric acid or complex acid compounds such as zinc chloride-acetic acid, boric acid-oxalic acid or by a bleaching earth such as tonsil.  In the multi-stage condensation different condensing agents may be used in each stage. Specification 327,382, [Class 2 (iii), Dyes &c.], is referred to.