FIELD: chemistry.
SUBSTANCE: invention relates to production of lubricating material characterised by dynamic viscosity at -35°C, lower than 5000 cpz, as a result of fulfilling the following stages: a) introduction of feedstock containing more than 50 weight % of paraffin, in presence of hydrogen in contact with catalyst containing component based on metal of group VIII applied on carrier based on refractory oxide, and b) introduction of product of stage (a) in contact with catalyst composition, which contains noble metal of group VIII, binder and crystals of zeolite belonging according to its type, to MTW, obtaining product characterised by lower flow temperature in as compared to that of stage (b) product and index of viscosity higher than 120, and c) adding to base oil obtained at stage (b) of additive for reduction of flow temperature.
EFFECT: production of lubricating material characterised by dynamic viscosity at -35°C.
21 cl, 5 dwg, 3 tbl, 3 ex
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