Fatty polyol dimer and its prepn process and application in foamed polyurethane plastic

A technology of dimerization of fatty acid methyl ester and dimerization of fatty acid, applied in the field of organic polymer compounds, can solve the problems of heat resistance, strength and tear resistance that cannot meet the requirements of technological development, and achieve good thermal insulation and good resistance. Thermal performance, good strength effect

Inactive Publication Date: 2007-11-07
JIANGSU QIANGLIN BIO ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the use of existing polyester polyols in polyurethane products, the heat resistance,

Method used

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  • Fatty polyol dimer and its prepn process and application in foamed polyurethane plastic
  • Fatty polyol dimer and its prepn process and application in foamed polyurethane plastic
  • Fatty polyol dimer and its prepn process and application in foamed polyurethane plastic

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1:

[0023] A dimerized fatty acid polyol with the following chemical structure:

[0024]

[0025] Where n1=1~12;

[0026] n2=1~10;

[0027] R=

[0028]

[0029] A preparation method of dimerized fatty acid polyols, the preparation steps are: subjecting fresh or discarded vegetable oil to methanol alcoholysis through conventional techniques to obtain fatty acid methyl esters, and the alcoholysis reaction of fats and recovered fats:

[0030]

[0031] The fatty acid methyl esters obtained in the previous step are thermally polymerized by conventional techniques, and the low-boiling fatty acid monoesters are removed by distillation to obtain dimerized fatty acid methyl esters (purity above 95%). The fatty acid thermal polymerization reaction:

[0032]

[0033]The dimerized fatty acid methyl ester is added to the polyol, wherein the mass ratio of the dimerized fatty acid methyl ester to the polyol is 1:1 to 4, and at the same time, 0.1 to 3% of the weight ...

Example Embodiment

[0034] Example 2

[0035] Preparation of dimerized fatty acid polyol: add the obtained dimerized fatty acid methyl ester to ethylene glycol, glycerol, pentaerythritol, diethylene glycol, triethylene glycol, etc., and mix one or more of them, and add The amount is 1:1-4 parts by mass. At the same time, add the zinc oxide of 0.1-3% by weight of the dimerized fatty acid methyl ester, and heat at 100-220°C to carry out the transesterification reaction. During the reaction, the methanol produced by the reaction is continuously distilled out. 2 When no methanol is distilled out after 5 hours, the reaction is stopped, and the excess alcohol in the reactant is distilled and recovered under reduced pressure at 100-200°C / 10-30mmHg to obtain dimerized fatty acid polyol. Sampling analysis, hydroxyl value 350-600KOHmg / g; viscosity (25°C) 400-2000mpa.s.

Example Embodiment

[0036] Example 3

[0037] Preparation of dimerized fatty acid polyol: add the obtained dimerized fatty acid methyl ester to ethylene glycol, the added amount is 1:1 parts by mass, and at the same time add 0.1% of the dimerized fatty acid methyl ester by mass of zinc oxide, and heat at 170°C. In the transesterification reaction, the methanol produced by the reaction is continuously distilled out during the reaction. When there is no methanol distilled out after 2 hours, the reaction is stopped, and the excess alcohol in the reactant is distilled and recovered under reduced pressure at 100°C / 30mmHg to obtain dimerized fatty acid Polyol. Sampling analysis, hydroxyl value 500KOHmg / g; viscosity (25℃) 2000mpa.s.

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Abstract

The present invention relates to organic high molecular compound and its preparation, chemical preparing and complex. The present invention provides one kind of fatty polyol dimer originated from biomass resource and its preparation process in polyurethane foam for raising the heat resistance, strength and tearing resistance.

Description

1. Technical field [0001] The invention belongs to organic macromolecule compound; its preparation or chemical processing; its composition as a base material, in particular to a dimerized fatty acid polyol, its preparation method and its application in polyurethane foam plastics. 2. Background technology [0002] Existing technology: As we all know, the raw materials used in the chemical industry are all taken from petroleum resources at present, facing the shortage of petroleum and rising prices, and biomass resources are the only inexhaustible resources. Fatty acid is one of the most abundant biomass resources. Among many synthetic materials, polyurethane soft and hard foam and other polyurethane products are one of the fastest growing industries in the modern plastics industry, because of their good thermal insulation, electrical properties, acoustic properties and chemical resistance, and have excellent strength, Tear resistance is widely used in home appliances, petroc...

Claims

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Application Information

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IPC IPC(8): C07C69/34C07C67/08C08G18/48C08G18/24C08G101/00
Inventor 蒋剑春周永红刘红军李书龙张猛
Owner JIANGSU QIANGLIN BIO ENERGY
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