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Novel method for synthesizing oil-based polyol through oil hydroxylation by one step

A synthetic oil and hydroxylation technology, which is applied in the field of polyurethane, can solve the problems of high requirements for reaction conditions, limited application range, and small hydroxyl value range, and achieve the effects of expanding application range, high yield, and simple operation

Inactive Publication Date: 2013-09-18
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of soybean oil-based polyols by the above-mentioned method is complicated, requires high reaction conditions, and the range of hydroxyl values ​​is small, so the scope of application is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Soybean oil and N-methylmorpholine-N-oxide were added to the reactor with a mass ratio of 1:1.4, and then 40 mL of chloroform and 0.25 wt% OsO 4 , at a reaction temperature of 20° C., react for 24 hours, and desolventize to obtain soybean oil-based polyols. The productive rate is 97.5%, the hydroxyl value is 141.9mgKOH / g, and the iodine value is 93gI 2 / 100g, the acid value is 2.95mgKOH / g.

Embodiment 2

[0020] Add soybean oil and hydrogen peroxide into the reactor at a mass ratio of 1:2, then add 40 mL of acetone and 0.6 wt% OsO 4 , at a reaction temperature of 30° C., react for 30 hours, and desolventize to obtain soybean oil-based polyols. The productive rate is 95.4%, the hydroxyl value is 201.5mgKOH / g, and the iodine value is 78gI 2 / 100g, the acid value is 2.12mgKOH / g.

Embodiment 3

[0022] Soybean oil and N-methylmorpholine-N-oxide were added to the reactor at a mass ratio of 1:1.8, and then 40 mL of chloroform and 0.38 wt% OsO 4 , at a reaction temperature of 20° C., react for 24 hours, and desolventize to obtain soybean oil-based polyols. The productive rate is 98.1%, the hydroxyl value is 277.5mgKOH / g, and the iodine value is 56gI 2 / 100g, the acid value is 1.88mgKOH / g.

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PUM

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Abstract

The invention discloses a novel method for synthesizing oil-based polyol through oil hydroxylation by one step. The method has the advantages of simple operation, high yield, mild reaction conditions and the like; and the oil-based polyol of which the hydroxyl value ranges from 10 to 470mgKOH / g by changing process conditions. The novel method for synthesizing the oil-based polyol through oil hydroxylation by one step comprises the following steps of: adding an oxidant, a catalyst and a solvent into a raw material, namely oil containing carbon-carbon double bond, reacting at the temperature of between 0 and 150DEG C for 5 to 60 hours, and removing the solvent to obtain the oil-based polyol.

Description

technical field [0001] The present invention provides a method for preparing polyurethane raw material polyol, more specifically relates to a novel method for synthesizing grease-based polyol in one step through hydroxylation of oil, which belongs to the field of polyurethane. technical background [0002] With the increase of petroleum consumption, human beings are facing the increasing shortage of petroleum resources, and the production of biomaterials from renewable resources has attracted more and more attention. In recent years, the research on green polymer materials at home and abroad has made great progress, including oil-based polymers, microbial synthetic ecological plastics and starch-based plastics. Due to its special structure, natural oil itself has a certain degradability, so the polymer obtained from it is not only low in cost, but also their waste can reduce the harm to the environment. Grease, as a raw material to replace traditional petrochemicals, has be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/00
Inventor 姚成孙兰娟郑海富贾凤林杰
Owner NANJING TECH UNIV