Preparation method of bio-based environment-friendly plasticizer for polystyrene resin

A polystyrene resin and environmentally friendly plasticizer technology, applied in the chemical industry, can solve problems such as limited use range, reduce corrosion of equipment and carboxylic acid waste water, improve plasticization performance, and improve impact resistance.

Pending Publication Date: 2021-01-05
蒋春梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Traditional petroleum-based phthalate plasticizers are still the plasticizers with the largest production and sales volume, but due to their potential threats to human health and the environment, their scope of use is increasingly limited

Method used

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  • Preparation method of bio-based environment-friendly plasticizer for polystyrene resin
  • Preparation method of bio-based environment-friendly plasticizer for polystyrene resin
  • Preparation method of bio-based environment-friendly plasticizer for polystyrene resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method of the bio-based environment-friendly plasticizer of polystyrene resin, its specific preparation scheme is as follows:

[0034] According to the mass kg, 45kg of cardanol, 38.6kg of chloro(diphenyl)ethyl acetate and 5.6kg of sodium hydroxide were stirred into 50kg of organic solvents, stirred and mixed evenly, and the temperature was controlled to 80°C, and stirred for 3 hours.

[0035] Then add 1kg of chloroplatinic acid isopropanol solution in mass percent content 5%, 3kg of tetramethylcyclotetrasiloxane, 0.1kg of 4-vinyltetrahydrofuran-3-alcohol, 1kg of zinc acrylate, 100kg of acetic acid Ethyl ester, reacted at 70°C for 80min,

[0036] Add 0.32kg of epoxidation catalyst and 100kg of ethyl acetate, stir and mix evenly, then control the temperature at 45°C, then slowly add 5kg of hydrogen peroxide into the reactor within 30 minutes, raise the temperature to 55°C after the addition, and continue stirring for 30 minutes. After completion, f...

Embodiment 2

[0045] A kind of preparation method of the bio-based environment-friendly plasticizer of polystyrene resin, its specific preparation scheme is as follows:

[0046] Stir 50kg of cardanol, 42.3kg of ethyl chloro(diphenyl)acetate and 6.8kg of sodium hydroxide into 70kg of organic solvent, stir and mix evenly, then control the temperature to 90°C, stir for 4 hours, and then add 2kg of mass percentage 8% isopropanol solution of chloroplatinic acid, 4kg of tetramethylcyclotetrasiloxane, 0.9kg of 4-vinyltetrahydrofuran-3-alcohol, 2kg of zinc acrylate, 110kg of ethyl acetate, at 75°C React for 120min. Add 0.46kg of epoxidation catalyst and 110kg of ethyl acetate, stir and mix evenly, then control the temperature at 50°C, then slowly add 8kg of hydrogen peroxide into the reactor within 40min, raise the temperature to 60°C after the addition, and continue stirring for 40min. After completion, filter, wash with salt water, add 15 kg of desiccant to dry, and evaporate the solvent to obta...

Embodiment 3

[0055] A kind of preparation method of the bio-based environment-friendly plasticizer of polystyrene resin, its specific preparation scheme is as follows:

[0056] Stir 55kg of cardanol, 46.4kg of ethyl chloro(diphenyl)acetate and 8.2kg of sodium hydroxide into 80kg of organic solvent, stir and mix evenly, then control the temperature to 110°C, stir for 6 hours, and then add 4kg of the mass percentage 10% isopropanol solution of chloroplatinic acid, 6kg of tetramethylcyclotetrasiloxane, 1.8kg of 4-vinyltetrahydrofuran-3-alcohol, 5kg of zinc acrylate, 120kg of ethyl acetate, at 80°C Reaction 180min. Add 0.58kg of epoxidation catalyst and 120kg of ethyl acetate, stir and mix evenly, then control the temperature at 55°C, then slowly add 10kg of hydrogen peroxide into the reactor within 60 minutes, raise the temperature to 65°C after the addition, and continue stirring for 60 minutes. After completion, filter, wash with salt water, add 20kg of desiccant to dry, and then evaporate...

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Abstract

The invention relates to the field of chemical engineering, in particular to a preparation method of a bio-based environment-friendly plasticizer for polystyrene resin. The plasticizer material for polystyrene resin is obtained by modifying a natural bio-based material cardanol. The method is also a green and pollution-free epoxidation synthesis method, and is used for reducing equipment corrosionand carboxylic acid wastewater. The method is an epoxidation synthesis process which is less in pollution, low in energy consumption and environment-friendly. The plasticizer material provided by theinvention is an environment-friendly plastic additive, can replace dioctyl phthalate and other toxic plasticizers, has a good plasticizing effect on polystyrene resin, and can significantly improve the impact resistance of the material.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of a bio-based environment-friendly plasticizer for polystyrene resin. Background technique [0002] Plasticizer is one of the most important additives required in the processing of polymer materials, especially plastics, and its output accounts for more than 60% of the total output of plastic additives. [0003] CN1037350A relates to a kind of plasticizer ECS belongs to double citric acid ester, is mainly used in polyvinyl chloride resin, manufactures non-toxic PVC products, is used in food packaging materials, medical supply materials, water supply pipes in the construction industry, etc., and is also Non-toxic plasticizer and softener for cellulose resin and synthetic rubber. It is made of citric acid, diethylene glycol, butanol and propylene oxide as raw materials through multi-step condensation. It has many advantages. Its performance when applied to PV...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C07C67/31C07C69/734C07F7/08C07D301/12C07D303/22B01J27/19C08K5/00C08L25/06
CPCC07C67/31C07F7/0838C07F7/0879C07F7/0889C07D301/12C07D303/22B01J27/19C08K5/0091C07C69/734C08L25/06
Inventor不公告发明人
Owner蒋春梅