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Preparation method of aliphatic ester polyol

A technology of fatty acid ester and epoxy fatty acid ester, which is applied in the field of preparation of fatty acid ester polyols, can solve problems such as the complexity of the oxidation process, and achieve the effects of abundant sources, simple preparation methods, and easy-to-obtain raw materials

Inactive Publication Date: 2009-04-01
SHANGHAI AIMO JINSHAN PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The epoxidation process of this process is complex and produces a large amount of waste water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Raw material selection and proportioning: 100g of fatty acid, 150g of fatty acid methyl ester, 250g of epoxidized soybean oil, 100g of triglycerin, 50g of diethanolamine, and 5g of potassium hydroxide.

[0033] Heat 250g of epoxidized soybean oil, 100g of triglycerin, 50g of diethanolamine and 5g of potassium hydroxide to 150°C under the protection of nitrogen, react for 1 hour, then add 100g of fatty acid and 150g of fatty acid methyl ester, heat up to 200°C, and continue the reaction After 5 hours, a certain amount of liquid was produced, and cooling promptly obtained a kind of fatty acid ester polyol product of the present invention. The hydroxyl value of the product is 400mgKOH / g.

Embodiment 2

[0035] Raw material selection and proportioning: fatty acid methyl ester 150g, epoxidized soybean oil 350g, triglycerin 150g, diethanolamine 25g, potassium hydroxide 5g.

[0036] Heat 350g of epoxidized soybean oil, 150g of triglycerin, 25g of diethanolamine and 5g of potassium hydroxide to 170°C under nitrogen protection, and react for 40 minutes, then add 150g of fatty acid methyl ester, heat up to 250°C, and continue the reaction for 2 hours. There is a certain amount of liquid to generate, and cooling promptly obtains a kind of fatty acid ester polyol product of the present invention. The hydroxyl value of the product is 500mgKOH / g.

Embodiment 3

[0038] Raw material selection and proportioning: fatty acid methyl ester 350g, epoxidized soybean oil 150g, polyglycerin 50g, diethanolamine 80g, sodium hydroxide 5g.

[0039] Heat 150g of epoxidized soybean oil, 50g of polyglycerol, 80g of diethanolamine and 5g of sodium hydroxide to 120°C under the protection of nitrogen, and react for 2 hours, then add 350g of fatty acid methyl ester, heat up to 180°C, and continue to react for 8 hours. Quantitative liquid is produced, and cooling promptly obtains a kind of fatty acid ester polyol product of the present invention. The hydroxyl value of the product is 300mgKOH / g.

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Abstract

The invention discloses a preparation method of a fatty acid ester polyol; 10 percent to 85 percent by weight of fatty acid ester or / and fatty acid, 10 percent to 80 percent by weight of epoxy fatty acid ester, 0.2 percent to 5 percent by weight of alkali and 4 percent to 50 percent by weight of fatty amine and / or alcohol are taken as raw materials; the epoxy fatty acid ester, the alkali, the fatty amine and / or the alcohol are taken according to the formula amount, heated and reacted for a period of time under the protection of inert gas; the fatty acid ester or / and the fatty acid are added for continuous heating and reaction for a period of time on the basis of the previous step of reaction, and the cooling is carried out for the preparation. The preparation method has simple preparation method, the raw materials are easy to be obtained, abundant in sources and renewable, the range of the controllable hydroxyl value of the product is larger, and the production process has small environmental pollution, therefore, the preparation method is applicable to industrial mass production.

Description

technical field [0001] The invention relates to a method for preparing organic raw materials for preparing polyurethane, in particular to a method for preparing fatty acid ester polyols. Background technique [0002] Polyurethane is the fifth largest synthetic material in the world and is widely used in foam, paint, elastomer, synthetic fiber, synthetic leather and other fields. Polyurethane rigid foam is developing very fast with the demand for building insulation and energy-saving materials in my country. However, because its main raw material polyether polyol is based on petroleum, the serious shortage and non-renewability of petroleum, people began to use renewable and low-cost raw materials to replace the original petroleum raw materials to prepare polyurethane polyols. Fatty acids or fatty acid esters can be prepared from vegetable oils or industrially recovered oils, and can be used as raw materials to prepare polyols for rigid polyurethane foams. Compared with petr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/66C07C67/03
Inventor 黄山严万春汤小群
Owner SHANGHAI AIMO JINSHAN PHARM CO LTD
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