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Low-viscosity polyolefin synthetic lubricating oil and preparation method thereof

A technology for synthesizing lubricating oil and polyolefin, which can be used in the production of lubricating compositions, liquid hydrocarbon mixtures, petroleum industry, etc., can solve problems such as insufficiency, and achieve the effect of good viscosity-temperature characteristics and low-temperature flow performance

Inactive Publication Date: 2010-09-08
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon number concentrated in C 10 ~C 15 Range, purity: up to 90% or more, normal structure rate: more than 90%, the content of α-olefins is less than 10%, which cannot meet the needs of α-olefins, and is currently mainly used for the production of surfactants

Method used

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  • Low-viscosity polyolefin synthetic lubricating oil and preparation method thereof

Examples

Experimental program
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Effect test

example 1

[0013] Add 35g (46ml) of C to a 100ml dry miniature reactor 13 ~C 14 Internal olefin mixture and 15g (20ml) of 1-tetradecene, add 0.2g (0.25ml) of n-butanol, use a constant temperature water bath to heat, control the reaction temperature to 80 ° C, and then pass into BF 3 (excessive), the reaction pressure was controlled at 0.4MPa, and the reaction was carried out for 4h. After the reaction, the product was transferred into a separatory funnel, neutralized with 5% NaOH solution, washed with water until neutral, settled at room temperature, separated after all the water was precipitated, and distilled to remove light components and untreated React monomers to obtain polyolefin synthetic oil. Synthetic oils can subsequently be hydrogenated to improve thermal and oxidative stability. The evaluation data are listed in Table 1.

example 2

[0015] In addition to adding 30g (40ml) of C to a 100ml dry microreactor 13 ~C 14 The internal olefin mixture and 20 g (26 ml) of 1-tetradecene are the same as in Example 1. The evaluation data are listed in Table 1.

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Abstract

The invention discloses low-viscosity polyolefin synthetic lubricating oil and a preparation method thereof. The method comprises the following steps of: after mixing 50 to 80 weight percent of C13 to C14 internal olefin mixtures generated by a catalytic dehydrogenation-alkane separation method and 20 to 50 weight percent of C14 to C16 straight chain alpha-olefins or mixtures thereof, adding 0.1 to 1 weight percent of n-butanol initiator into the mixture; introducing BF3 (excessive amount); performing a polymerization reaction under the pressure of between 0.2 and 1 MPa and at the temperature of between 30 and 100 DEG C for 1 to 6 hours; removing a catalyst; and distilling to remove components of which the temperature is not higher than 280 DEG C to obtain the low-viscosity (V100 DEG C=3 to 5 mm<2> / s) polyolefin synthetic lubricating oil. The method has the advantages that: the used raw materials are rich and the cost is low. Simultaneously synthetic oil prepared by using the method has a good viscosity-temperature characteristic (VI is more than 125) and low-temperature flowing property (a solidification point is less than -45 DEG C), so the synthetic oil is high-quality low-viscosity polyolefin synthetic lubricating oil.

Description

technical field [0001] The invention relates to a low-viscosity polyolefin synthetic oil and a preparation method thereof, belonging to the field of polyolefin lubricating oil in synthetic lubricants, in particular to a C produced by catalytic dehydrogenation-alkane separation (Pacol-Olex) method 13 ~C 14 internal olefin mixture with C 14 ~C 16 The mixed olefins of linear α-olefins (or their mixtures) are used as raw materials, using the known BF 3 - Catalyzed by n-butanol catalytic system, the method for preparing low-viscosity polyolefin synthetic oil through polymerization reaction. Background technique [0002] Although mineral oil is cheap, for some special purposes, mineral oil cannot meet the requirements of use. As a result, the proportion of synthetic lubricating base oils in the lubricating oil market has increased significantly. Among them, polyolefin lubricating oil has high viscosity index, low pour point, good thermal stability and oxidation stability, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/04C10G50/02C10M177/00C10N30/02
Inventor 丁洪生许林林刘萍萍刘庆利
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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