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Preparation method of plant oil polyalcohol

The technology of vegetable oil polyol and vegetable oil is applied in the field of preparation of vegetable oil polyol, which can solve the problems of increasing cost, restricting product use, complicated processing and the like, and achieving the effects of easy post-processing, large hydroxyl range and simple reaction process.

Inactive Publication Date: 2006-11-29
鹏欣环球资源股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Processing is complex: need to filter clay, strip excess alcohol, recover polyols
In the above two preparation methods, the vegetable oil must first be epoxidized, and the epoxidation step increases the cost for industrialized large-scale production.
In addition, the hydroxyl value of the polyol prepared by CN1583828A is 110mgKOH / g~200mgKOH / g, and the limited range of hydroxyl value limits the use of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] soybean oil 710g

[0028] Diethanolamine 130g

[0029] Triethanolamine 100g

[0030] Glycerin 50g

[0031] Pentaerythritol 18g

[0032] water 5g

[0033] KOH 5g

[0034] Feed the above components, in N 2 Under protection, the temperature was raised to 110° C. for 45 minutes. Close N 2 , evacuated, heated to 160°C, and kept at 160°C for 4 hours. After cooling, about 950g of the product is obtained. The hydroxyl value of the product is 430mgKOH / g.

Embodiment 2

[0036] soybean oil 820g

[0037] Diethanolamine 100g

[0038] Triethanolamine 60g

[0039] Glycerin 20g

[0040] Ethylene glycol 20g

[0041] water 5g

[0042] KOH 5g

[0043] Feed the above components, in N 2 Under protection, the temperature was raised to 120° C. for 30 minutes. Close N 2 , evacuated, 5-100mmHg, heated to 180°C, and kept at 180°C for 4 hours. After cooling, about 960g of the product is obtained. The hydroxyl value of the product is 250mgKOH / g.

Embodiment 3

[0045] Palm oil 1150g

[0046] Diethanolamine 445g

[0047] Glycerin 330g

[0048] water 10g

[0049] Sodium hydroxide 6g

[0050] Feed the above components, blow nitrogen, raise the temperature to 110°C, and react for 90 minutes. Turn off nitrogen, heat up to 160°C, vacuumize, and keep warm at 160°C for 5 hours. After cooling, about 1800g of the product was obtained. The hydroxyl value of the product is 630mgKOH / g.

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PUM

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Abstract

The invention relates to a manufacturing method of the vegetable oil polyalcohol which can be used to make various polyurethane rigid foam materials. It uses vegetable oil and low-substituted fatty amine and / or polyalcohol to act with alkali. The hydroxyl value of the formed polyalcohol is 200-700 mgKOH / g. It has the advantage of simple technology and convenient post processing. And it is fit for industrialized large scale production.

Description

technical field [0001] The invention relates to a preparation method of vegetable oil polyol, which can be used to prepare various polyurethane rigid foam materials. Background technique [0002] Due to the limitation of petroleum resources, people began to use vegetable oil as raw material to replace the original petroleum raw material to prepare polyols. US6107433 discloses a method for preparing polyols from vegetable oils, which uses a fluoroboric acid catalyst to epoxidize vegetable oils, and then uses another fluoroboric acid catalyst plus alcohol to hydroxylate the epoxidized oil into polyols. The disadvantages of this preparation method are that the original price is high, the reaction risk is high, and the by-product treatment is troublesome. CN1583828A discloses a method for preparing oleochemical oil-based polyols by mixing epoxidized oleochemical oils, alcohols, and acid-activated or acid-leached clays to prepare oleochemical oil-based polyols Polyol. Treatmen...

Claims

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Application Information

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IPC IPC(8): C11C3/00C08G18/36
Inventor 黄山严万春汤小群
Owner 鹏欣环球资源股份有限公司
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