Dispersible ethylene-propylene copolymer and preparation method thereof

An ethylene-propylene copolymer, dispersed technology, applied in the field of dispersed ethylene-propylene copolymer and its preparation, can solve the problems of multi-energy, consumption, lengthy and complicated process, etc., and achieve the effects of simple preparation method, cost reduction and energy saving
CN103864993AActive Publication Date: 2014-06-18PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2014-06-18

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Abstract

The invention provides a dispersible ethylene-propylene copolymer and a preparation method thereof. The dispersible ethylene-propylene copolymer comprises, by weight, 90-99.7% of an anhydride group-grafted ethylene-propylene copolymer and 0.3-10% of N-(1-naphthyl)ethylenediamine and its derivatives. The preparation method comprises that the anhydride group-grafted ethylene-propylene copolymer and N-(1-naphthyl)ethylenediamine and its derivatives undergo a reaction in the presence of base oil to produce a glue solution containing the dispersible ethylene-propylene copolymer. The preparation method has the advantages that the product color is not changed easily by oxidization, amide residues can be removed by reduced pressure distillation, an after-treatment reaction is avoided, preparation processes are simple, and energy is saved. The dispersible ethylene-propylene copolymer can be used as a dispersion viscosity index improver and can be used in lubricating oil. Through use of the dispersible ethylene-propylene copolymer, oil products have excellent dispersion performances.
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Description

technical field

[0001] The invention relates to a dispersed ethylene-propylene copolymer for lubricating oil and a preparation method thereof. Background technique

[0002] With the increasingly stringent emission regulations of automobiles, automobile engine manufacturers continue to innovate and improve engine technologies, such as adding turbochargers to engines, using delayed injection technology, and adopting waste recycling technology (EGR), etc. These new technologies increase the power of the engine while greatly reducing emissions of nitrogen oxides and particulate matter. However, these technologies have increased the requirements for the performance of internal combustion engine oils, such as soot dispersion performance.

[0003] In recent years, in order to improve the soot dispersing performance of lubricating oil, polymer dispersants, such as dispersive viscosity index improvers, have been used in the formulation of internal combustion engine oils. U.S. Paten...

Claims

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