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Rubber seed oil polyalcohol and preparation method thereof

A technology of rubber seed oil and epoxy rubber seed oil, applied in alcoholysis preparation, organic chemistry, etc., can solve the problems of human competition for food, achieve the effects of reducing pressure, reducing dependence, and increasing added value

Active Publication Date: 2010-12-08
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of them are edible oils, which are used as chemical raw materials, and there is a problem of competing with humans for food

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) 20g rubber seed oil, 5g mass percent concentration is 30% (the same below) hydrogen peroxide, 0.25g tungstic acid (or 20g rubber seed oil, 30g hydrogen peroxide, 1g phosphomolybdic acid or 20g rubber seed oil, 16g hydrogen peroxide, 0.4g phosphotungstic acid) into the reaction kettle, stir and heat up to 50°C, maintain the reaction temperature for 5 hours, separate the acid water, first use 5% concentration by mass (the same below) NaCO 3 Wash the reaction product with an aqueous solution until the pH is 5-6, then wash with saturated sodium chloride and water until neutral, and remove water under reduced pressure at 90°C for 2 hours to obtain epoxy rubber seed oil.

[0021] (2) Put 20g of epoxy rubber seed oil, 40g of methanol, 40g of isopropanol and 0.2g of fluoroboric acid prepared in step (1) into the reaction kettle, raise the temperature to 75°C, maintain the reaction temperature for 1 hour, and separate the acid water , first use NaCO 3 The aqueous solution ...

Embodiment 2

[0027] (1) Put 20g rubber seed oil into the reaction kettle, stir and heat up to 60°C, press rubber seed oil: hydrogen peroxide: catalyst weight ratio is 1: 0.5: 0.03 ratio, that is, 10g hydrogen peroxide, 0.4g tungsten Acid, 0.2g sulfonic acid salicylic acid, add the mixture of hydrogen peroxide and catalyst dropwise through the constant pressure dropping funnel, and slowly add dropwise within 2 hours. After the dropwise addition, maintain the reaction temperature for 4 hours, separate with NaCO 3 Wash the reaction product with an aqueous solution until the pH is 5-6, then wash it with saturated sodium chloride and water until neutral, and remove water under reduced pressure at 50°C for 5 hours to obtain epoxy rubber seed oil.

[0028] (2) Put 20g of epoxy rubber seed oil, 30g of methanol, 60g of isopropanol and 0.1g of fluoroboric acid prepared in step (1) into the reaction kettle, raise the temperature to 80°C, maintain the reaction temperature for 3 hours, and separate the ...

Embodiment 3

[0031] (1) Put 20g of rubber seed oil, 16g of hydrogen peroxide, 0.2g of tungstic acid, and 0.3g of salicylic acid into the reaction kettle, stir and raise the temperature to 70°C, maintain the reaction temperature for 3 hours, separate the acid water, first use NaCO 3 Wash the reaction product with an aqueous solution until the pH is 5-6, then wash with saturated sodium chloride and water until neutral, and remove water under reduced pressure at 55°C for 5 hours to obtain epoxy rubber seed oil.

[0032] (2) 20g epoxy rubber seed oil, 60g methyl alcohol, 60g isopropanol and 0.14g phosphoric acid that step (1) is made are put into reactor, heat up 90 ℃, maintain reaction temperature 0.5 hour, isolate acid water, Use NaCO first 3 The aqueous solution washes the reaction product until the pH is 5-6, and then washes it with water until it is neutral, and vacuumizes it at 50° C. for 5 hours to obtain the rubber seed oil polyol.

[0033] The epoxy value of the epoxy rubber seed oil...

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Abstract

The invention relates to rubber seed oil polyalcohol and a preparation method thereof. The method comprises the following steps of: mixing rubber seed oil, hydrogen peroxide and a catalyst serving as raw materials in a weight ratio of 1:0.5-1.5:0.01-0.05, putting the mixture into a reaction kettle, stirring the mixture and raising temperature to 50 to 80 DEG C, keeping reaction temperature for 3 to 8 hours, lowering the temperature to 30 DEG C, separating acid water out, washing the mixture with aqueous solution of sodium carbonate until the pH of the mixture is between 5 and 6, washing the mixture to be neutral with saturated sodium chloride and water, and performing pressure reduction and water removal at the temperature of between 50 and 90 DEG C for 2 to 5 hours to obtain epoxy rubberseed oil; and adding the epoxy rubber seed oil, methanol, isopropanol and fluoboric acid into the reaction kettle in a weight ratio of 1:1-5:1-5:0.002-0.01, raising the temperature to 75 to 100 DEG C, performing a reaction for 0.5 to 3 hours, washing the reaction product with the aqueous solution of the sodium carbonate until the pH of the reaction product is between 5 and 6, washing the reaction product to be neutral with water, and performing vacuum pumping at the temperature of between 50 and 120 DEG C for 2 to 5 hours to obtain the rubber seed oil polyalcohol. In the method, the conventional petroleum chemical is replaced by a non-edible plant oil resource, so that the dependence of polyurethane industry on petroleum chemicals is reduced, and the added value of the rubber seed oil is increased.

Description

technical field [0001] The invention relates to a vegetable oil polyol, in particular to a rubber seed oil polyol which can be used for preparing polyurethane and a preparation method thereof. Background technique [0002] With the increasing shortage of petroleum resources and the rising price of crude oil, it has become an inevitable trend to replace petroleum resources with natural renewable resources. Vegetable oil has attracted more and more attention because of its low price, easy planting, environmental protection and resource renewability. It is of great economic value and scientific significance to study its replacement of petroleum products to produce oligomer polyols and its application development. . In my country, the ring-opening addition of epoxidized soybean oil and alcohols to prepare soybean oil polyols has been industrialized, while the research on other types of vegetable oil polyols is still in an immature stage. [0003] At present, the vegetable oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/128C07C31/18
Inventor 郑志锋黄元波杜官本叶喜
Owner SOUTHWEST FORESTRY UNIVERSITY
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