Polyglycerol fatty acid ester plasticizer and preparation method thereof

A technology of fatty acid ester and plasticizer, which is applied in the field of plastic industry auxiliaries and polyglycerol fatty acid ester plasticizer to achieve the effect of facilitating industrial production, improving adaptability and high biodegradability

Inactive Publication Date: 2014-12-03
HENAN ZHENGTONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing epoxidized soybean oil and glycerol diacetyl vegetable oleate in our country have been used in the plastic industry to

Method used

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  • Polyglycerol fatty acid ester plasticizer and preparation method thereof
  • Polyglycerol fatty acid ester plasticizer and preparation method thereof
  • Polyglycerol fatty acid ester plasticizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 340Kg of measured diglycerin and 650Kg of hydrogenated coconut oil into the reaction kettle, add 0.8Kg of sodium hydroxide, heat to 180-185°C, and carry out transesterification reaction under vacuum (-0.09 to -0.1MPa), the reaction time For 2 hours, when the monoester content is greater than 45% by gas chromatography, cool down to 80-100°C and add 1.3Kg of phosphoric acid for neutralization and filtration, followed by four-stage molecular distillation. The four-stage distillation process parameters are as follows: the first stage vacuum 500 -600Pa, temperature 135-145°C, second stage vacuum 100-200Pa, temperature 150-160°C, third stage vacuum 30-50Pa, temperature 150-160°C, fourth stage vacuum 0-10Pa, temperature 150-160°C . Remove moisture, unreacted polyglycerol, fatty acid and polyester to make the polyglycerol monoester content greater than 80%. Then put 500Kg of refined polyglycerol monoester and 460Kg of acetic anhydride into the reactor, add 40Kg of acetic a...

Embodiment 2

[0023] Add 310Kg of triglycerin and 600Kg of hydrogenated castor oil into the reaction kettle, add 0.6Kg of potassium hydroxide, heat to 220-230°C, and carry out transesterification reaction under the protection of nitrogen. The reaction time is 2.5 hours, and it is detected by gas chromatography. When the monoester content is greater than 45%, lower the temperature to 90-110°C and add 1.0Kg of phosphoric acid for neutralization and filtration, followed by four-stage molecular distillation. ℃, the second vacuum is 200-300Pa, the temperature is 150-160℃, the third vacuum is 30-50Pa, the temperature is 160-170℃, the fourth vacuum is 20-30Pa, the temperature is 160-180℃. Remove moisture, unreacted glycerin, fatty acid and polyester, so that the content of polyglycerol monoester is greater than 80%. Then put 500Kg of refined polyglycerol monoester and 510Kg of acetic anhydride into the reactor, add 50Kg of acetic acid and 0.5Kg of p-toluenesulfonic acid, heat to 115°C-135°C for ac...

Embodiment 3

[0025] Add 450Kg of diglycerin and 540Kg of lauric acid into the reaction kettle, add 1.5Kg of sodium hydroxide, heat to 180-190°C, carry out esterification reaction under vacuum (-0.09 to -0.1MPa), and the reaction time is 5 -6 hours, after measuring that the acid value is less than 2.0mgKOH / g, cool down to 80-100°C and add 2.5Kg of phosphoric acid for neutralization and filtration, followed by four-stage molecular distillation. The four-stage distillation process parameters are as follows: the first stage vacuum 700 -800Pa, temperature 145-150°C, second stage vacuum 200-300Pa, temperature 160-170°C, third stage vacuum 50-60Pa, temperature 160-170°C, fourth stage vacuum 20-30Pa, temperature 170-180°C . Remove moisture, unreacted glycerin, fatty acid and polyester, so that the content of polyglycerol monolaurate is greater than 80%. Then put 500Kg of refined polyglycerol monolaurate and 450Kg of acetic anhydride into the reactor, add 40Kg of acetic acid and 0.3Kg of p-toluene...

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Abstract

The invention discloses a polyglycerol ester plasticizer and a preparation method thereof and belongs to the field of plastic additives. According to the invention, an ether bond is intruded, so that a plasticizer molecule not only does not contain a polar ester group but also contains a weak-polarity ether bond, so that polymer glass transition temperature is lowered, and heat resistance and cold resistance are improved. The polyglycerol ester plasticizer takes natural oil as a raw material, does no harm to human body and has high safety as a plasticizer in plastics for food package, medical devices, toys for children and the like; the polyglycerol ester plasticizer also has high biological degradability and high promotional value.

Description

technical field [0001] The invention relates to plastic industrial additives, in particular to an environmentally friendly, non-toxic polyglycerol fatty acid ester plasticizer with good high and low temperature resistance performance, belonging to the field of plastic additives. Background technique [0002] As my country pays more attention to the food pollution caused by the migration of plasticizers in food packaging, plasticizers with natural green that can meet food-grade requirements have received more attention. Glyceride plasticizers are derived from natural oils and are harmless to the human body. They are highly safe as plasticizers in plastics such as food packaging, medical equipment, and children's toys. The existing epoxidized soybean oil and glycerol diacetyl vegetable oleate in our country have been used in the plastic industry to some extent, but these products have some deficiencies in high temperature resistance, cold resistance, etc. Improvements are imm...

Claims

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Application Information

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IPC IPC(8): C08K5/103C08L27/06C11C3/04C11C3/10
Inventor 楚喆王青楚军政
Owner HENAN ZHENGTONG CHEM
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