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High viscosity dibasic acid esters oil and method of producing the same

A high-viscosity, diester technology, which is applied in the field of ester synthetic lubricating oil in synthetic lubricants, can solve the problems of limited viscosity range and low relative molecular weight, and achieve the effects of high relative molecular weight, short reaction time and high viscosity at high temperature

Inactive Publication Date: 2009-02-18
俏东方生物燃料集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dibasic acid with the longest carbon chain used in current diesters is dodecanedioic acid, and the alcohol is isotridecanol. The relative molecular weight is low, which limits its viscosity range.

Method used

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  • High viscosity dibasic acid esters oil and method of producing the same
  • High viscosity dibasic acid esters oil and method of producing the same
  • High viscosity dibasic acid esters oil and method of producing the same

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Embodiment Construction

[0025] The present invention uses carboxymethyl octadecanedibasic acid and isotridecanol prepared from methyl oleate as raw materials, under 180-240 DEG C, normal pressure, rare earth solid heterogeneous acid (heteropoly acid HPA and rare earth lanthanum cerium ) is the preparation of isotridecanol carboxymethyl octadecanedioic acid ester by esterification under catalyzer and vacuum condition. (The overall process flow diagram is as follows figure 1 shown).

[0026] Below the concrete content of the present invention, in conjunction with accompanying drawing, be described in further detail as follows:

[0027] The rare earth solid heterogeneous acid catalyst of carboxymethyl octadecanedioic acid 0.3% (mass fraction) is dispersed in the isotridecyl alcohol that the amount of substance is 2.5 times of carboxymethyl octadecanedioic acid, then added to In the carboxymethyl octadecanedibasic acid, the reactor is sealed, filled with nitrogen, heated to 220 ° C, stirring constantl...

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Abstract

The invention relates to high viscosity diester oil and a preparation method thereof. The chemical composition of the diester oil is iso-tridecanol carboxymerhyl octadecatrienal dioic acid ester, the chemical formula is shown in the lower right formula, and the preparation method comprises the following steps: carboxymerhyl octadecatrienal dicarboxylic acid and iso-tridecanol prepared by using methyl oleate are adopted as raw materials, under 180 to 240 DEG C and the atmospheric pressure, rare earth solid multiphase acid (heteropoly acid and La-Ce) is adopted as catalyst, and the iso-tridecanol carboxymerhyl octadecatrienal dioic acid ester is prepared under vacuum condition. The preparation method has the advantages that the iso-tridecanol carboxymerhyl octadecatrienal dioic acid ester prepared has high relative molecular weight; the high temperature viscosity of oil product is high; the other properties are corresponded to other diester; and high viscosity lubricating oil can be prepared. When the rare earth solid multiphase acid catalyst is adopted in a technological process, the reaction time is short; the conversion rate can reach 100 percent; neutralization and water washing is not required; the rare earth solid multiphase acid catalyst can be recovered and reused, and the heat energy can be recycled in the process.

Description

technical field [0001] The invention relates to a high-viscosity diester oil and a preparation method thereof, and belongs to the field of ester synthetic lubricating oil in synthetic lubricants. Background technique [0002] Modern lubricating oil base oils are classified according to API (American Petroleum Institute), and are divided into 5 categories (I, II, III, IV, V), of which I, II, and III are mineral oils, and IV is petroleum-based synthetic oils. Alpha olefins, Group V are other synthetic base oils. Ester synthetic lubricants belong to category V. [0003] Ester oil is the esterification reaction product of organic acid and alcohol, and the molecules of ester oil all contain ester functional group -COOR. Ester oils in synthetic lubricants can be divided into monoesters, diesters, polyol esters, double esters, etc. Animal fats and vegetable oils that exist in nature are mostly saturated monocarboxylic acids or unsaturated monocarboxylic acids and glycerol. Compa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/36
Inventor 吉二旺
Owner 俏东方生物燃料集团有限公司
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