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Dimer acid as well as preparation method and application thereof

A dimer acid and reaction technology, applied in the field of polymers, can solve the problems of high cost of separation and purification, high polymerization reaction temperature, high equipment requirements, etc., and achieve the effects of good product quality, low reaction temperature and simple preparation process

Active Publication Date: 2019-06-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the above methods, the synthesis of dimer acid needs to add a large amount of catalysts or / and catalytic aids, and the catalysts used are in powder form, the subsequent separation and purification costs are high, the product is lost during the separation process, and it will cause certain environmental pollution
In addition, the polymerization reaction temperature is relatively high, generally not lower than 240°C, and some reaction processes require pressure, which requires high equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Commercial tungoleic acid (purchased from Anhui Ruifengde Oil Deep Processing Co., Ltd., model: T160) was used. Take 100g of commercial oleic acid T160 and place it in a 250mL four-necked flask, purging with nitrogen for 30min, stirring at 300rpm, raising the temperature to 220°C for 4h, stopping heating, and cooling naturally to obtain a dimer acid product. As determined by GPC, the content of dimer acid in the product was 40.62%, and the content of monocyclic dimer acid was 83%.

Embodiment 2

[0027] Commercial tungoleic acid (purchased from Anhui Ruifende Oil Deep Processing Co., Ltd., model: T155) was used. Take 100 grams of commercial oleic acid T155 and place it in a 250 mL four-necked flask, purging with nitrogen for 30 minutes, stirring at 300 rpm, raising the temperature to 220°C for 4 hours, stopping heating, and naturally cooling to obtain a dimer acid product. As determined by GPC, the content of dimer acid in the product was 45.97%, and the content of monocyclic dimer acid was 92%.

Embodiment 3

[0029] Take 100 g of the same commercial oleic acid as in Example 1 and place it in a 250 mL four-necked flask, purging with nitrogen for 20 min, stirring at 400 rpm, raising the temperature to 230 ° C for 3 h, stopping heating, and cooling naturally to obtain a dimer acid product. As determined by GPC, the content of dimer acid in the product was 40.12%, and the content of monocyclic dimer acid was 77%.

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PUM

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Abstract

The invention relates to a dimer acid as well as a preparation method and application thereof. The molecular formula of the dimer acid is C34H58(COOH)2, and the content of a monocyclic dimer acid is more than 70%. The invention also provides a preparation method of the dimer acid, the dimer acid is prepared by taking tung oil or eleostearic acid as a raw material, the preparation process is simple, and the environmental friendliness and economy are good. The prepared dimer acid can be used for preparing polyamide resin, hot melt adhesive, lubricating oil and the like, and the application rangeis wide.

Description

technical field [0001] The invention belongs to the field of polymers, and in particular relates to a dimer acid and its preparation method and application. Background technique [0002] Dimer acid is named after its molecule contains two carboxylic acid groups, mainly refers to C18 unsaturated fatty acid under certain conditions, according to the Diels-Alder reaction to generate dimer acid with C36 as the main component. According to the reaction mechanism, the basic structures of dimer acids can be roughly divided into three categories: monocyclic, bicyclic, and acyclic. At present, commercial dimer acid is generally a mixture of three isomers. [0003] The dimer acid has a moderate molecular weight and a unique structure. The molecule has both a long flexible carbon chain and a relatively rigid ring structure. It not only has polar and non-polar groups, but also has active properties such as carbonyl and double bonds. reactive groups. These unique molecular structures ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F7/06C08G69/34C10M129/93C09J9/00
Inventor 曹长海李澜鹏王宜迪程瑾李秀峥王领民乔凯
Owner CHINA PETROLEUM & CHEM CORP
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