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Plant oil based polyol as well as preparation method thereof and applications

A vegetable oil-based, polyol-based technology, applied in the direction of organic chemistry, can solve the problems of waste of raw materials, environmental pollution, loss, etc., and achieve the effect of simple preparation process, no need for follow-up treatment, and wide application

Inactive Publication Date: 2018-07-27
安庆北化大科技园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the polyols used in the synthesis of polyurethane polymers come from petrochemicals, making polyurethane materials face many problems
Although there are many polyols synthesized from epoxidized vegetable oils to replace polyols synthesized in petrochemical industry, many small molecule alcohols are used in the polyols synthesized, such as ethylene glycol, 1,3-propanediol, glycerol, pentaerythritol, ethyl alcohol, etc. Glycol amine, etc., these small molecular substances will inevitably be lost during the synthesis process. On the one hand, it will cause waste of raw materials, and on the other hand, it will more or less cause environmental pollution problems, which will also have a negative impact on production safety.
Therefore, using vegetable oils to synthesize polyols that can be used to synthesize polyurethane polymers still faces many problems

Method used

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  • Plant oil based polyol as well as preparation method thereof and applications
  • Plant oil based polyol as well as preparation method thereof and applications
  • Plant oil based polyol as well as preparation method thereof and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 50 g of epoxidized soybean oil (epoxy value 0.425mol / 100g) into a 250ml three-necked bottle, install stirring and a thermometer and ventilate nitrogen, heat to 90°C in an oil bath, and start adding dropwise to the epoxidized soybean oil Concentration is 15% sodium hydroxide solution 33.3g, dropwise is finished within 2h, after continuing to stir and react for 0.5h, then add concentration is 36% hydrochloric acid solution 13.8g to it, after continuing to stir and react for 1.5h, all Transfer to a 250ml pear-shaped separatory funnel for liquid separation to take the oil phase, and wash with deionized water to neutrality, then distill under reduced pressure to obtain 41.0 g of single-chain fatty acids. The acid value of the single-chain fatty acid was determined to be 162.40 mgKOH / g. Infrared spectrum test for single-chain fatty acids, the results are as follows figure 1 shown. Depend on figure 1 It can be seen that 1710.10cm -1 It is the characteristic absorptio...

Embodiment 2

[0043] Weigh 50g of epoxidized soybean oil (epoxy value 0.425mol / 100g) into a 250ml three-necked bottle, install stirring and a thermometer and pass nitrogen, heat to 95°C in an oil bath, and start to dropwise add Concentration is 33.3g of sodium hydroxide solution of 15%, dropwise is finished within 2h, after continuing to stir and react for 1.0h, then add concentration is 36% hydrochloric acid solution 13.8g to it, after continuing to stir and react for 1.5h, all Transfer to a 250ml pear-shaped separatory funnel for liquid separation to take the oil phase, and wash with deionized water to neutrality, then distill under reduced pressure to obtain 42.3g of single-chain fatty acids. The acid value of the single-chain fatty acid was determined to be 157.0 mgKOH / g.

[0044] Take above-mentioned single-chain fatty acid 35.0g and epoxidized soybean oil (epoxy value 0.425mol / 100g) 46.2g in the 250ml there-necked flask, then add catalyst tetrabutylammonium bromide 0.5g wherein, under...

Embodiment 3

[0046] Weigh 50g of epoxidized soybean oil (epoxy value 0.425mol / 100g) into a 250ml three-necked bottle, install stirring and a thermometer and pass nitrogen, heat to 95°C in an oil bath, and start to dropwise add Concentration is 10% potassium hydroxide solution 75.95g, dropwise is completed within 2h, after continuing to stir and react for 0.5h, then add concentration is 36% hydrochloric acid solution 13.8g to it, after continuing to stir and react for 1.5h, all Transfer to a 250ml pear-shaped separatory funnel for liquid separation to get the oil phase, and wash with deionized water to neutrality, then distill under reduced pressure to obtain 40.6g of single-chain fatty acids. The acid value of the single-chain fatty acid was determined to be 156.3 mgKOH / g.

[0047] Take above-mentioned single-chain fatty acid 35.0g and epoxidized soybean oil (epoxy value 0.425mol / 100g) 25.7g in the 250ml there-necked bottle, then add catalyst tetrabutylammonium bromide 0.2g wherein, under ...

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Abstract

The invention discloses complete plant oil based polyol. The polyol comprises a structure as follows, wherein R is selected from anyone or multiple kinds from the following structures, such as -(CH2)16CH3 and -(CH2)14CH3. The invention also discloses a preparation method of the plant oil based polyol, and the method is as follows: epoxidized vegetable oil in an alkali solution is hydrolyzed in order to obtain single chain aliphatic acids with hydroxyl groups, single chain aliphatic acids with hydroxyl groups and epoxidized vegetable oil are reacted, in order to obtain plant oil based polyol. The invention also discloses an application of the plant oil based polyol to preparation of a polyurethane material. The method is advantageous in that plant oil based polyol completely employs naturalplant oil as a raw material, a lot of hydroxyl groups are introduced to the longer aliphatic acid carbon chains, so that applications of the plant oil based polyol are wide; the preparation process is simple, and after treatment of the products are not needed; in addition, a lot of alcoholic hydroxyl groups are embedded in the long carbon chains of fatty groups, so that polyurethane materials obtained by polyol endow better application performance for the polyurethane material, such as toughness, elasticity, and the like.

Description

technical field [0001] The invention relates to the technical field of polyol preparation for polyurethane, and more specifically relates to a complete vegetable oil-based polyol and a preparation method and application thereof. Background technique [0002] With the improvement of environmental protection awareness and the depletion of petroleum resources, the utilization of renewable resources has attracted more and more attention. The production of petrochemical products as raw materials not only has high cost, but also causes a lot of environmental pollution in the production process, and the degradability of the produced products is extremely poor, which further causes environmental pollution. Using renewable resources as raw materials for production, such as vegetable oil, can greatly improve the shortcomings of using petroleum products as raw materials. The main reasons are: firstly, vegetable oil has a wide range of sources and rich content, which makes its price mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/42C08G18/36
CPCC07D303/42C08G18/36
Inventor 聂俊吴卫东朱晓群方大为
Owner 安庆北化大科技园有限公司
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