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Method for improving compatibility of epoxidized methyl acetylricinolate plasticizer and PVC (Polyvinyl Chloride) resin

A technology of epoxy acetyl castor and PVC resin, which is applied in the direction of organic chemistry, can solve the problems of reduced plasticizer compatibility, high plasticizing temperature, and poor softness of PVC finished products, so as to reduce the plasticizing temperature, Effect of improving flexibility, improving durability and service life

Active Publication Date: 2018-09-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of acetyl branched chains in acetyl ricinoleic acid methyl ester, this will reduce the compatibility of the plasticizer itself with PVC resin, resulting in problems such as high plasticizing temperature and poor softness of PVC products.

Method used

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  • Method for improving compatibility of epoxidized methyl acetylricinolate plasticizer and PVC (Polyvinyl Chloride) resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add 36 parts of monochloroacetic anhydride and 2 parts of phosphoric acid to 100 parts of methyl ricinoleate at 40°C and nitrogen atmosphere, and then react at 65°C for 2 hours. After the reaction, use 1.5% sodium carbonate. The organic layer is washed with the solution and distilled water until the pH of the washed water is 5.5, and then the water is distilled off under reduced pressure to obtain methyl acetylricinoleate;

[0022] (2) Take 40 parts of 30% hydrogen peroxide, 15 parts of formic acid, and 0.5 parts of concentrated sulfuric acid to prepare peroxy acid. At 40℃, add 100 parts of methyl acetyl ricinoleate and 25 parts of benzene. Add dropwise for 30 minutes, and then react at 45°C for 3 hours. After the reaction, the lower layer of acid is separated, and the upper organic layer is washed with 1.5% sodium carbonate solution and distilled water, until the pH of the washed water is 5.5, then reduce Pressure distillation to remove water to obtain methyl epoxyace...

Embodiment 2

[0025] (1) Add 60 parts of monochloroacetic anhydride and 3 parts of p-toluenesulfonic acid to 100 parts of methyl ricinoleate under 40°C and nitrogen atmosphere, and then react at 65°C for 4 hours. After the reaction, use 1.5% respectively. Wash the organic layer with sodium bicarbonate solution and distilled water to pH=6, and then distill off the water under reduced pressure to obtain methyl acetyl ricinoleate;

[0026] (2) Take 45 parts of 30% hydrogen peroxide, 18 parts of formic acid, and 0.8 parts of concentrated sulfuric acid to make peroxy acid. At 45°C, add 100 parts of methyl acetyl ricinoleate and 30 parts of toluene. To the mixture, add dropwise for 60 minutes, and then react at 45°C for 4 hours. After the reaction, the lower layer of acid is separated, and the upper organic layer is washed with 2% sodium bicarbonate solution and distilled water, until the wash water pH=6, and then reduce Pressure distillation to remove water to obtain methyl epoxyacetyl ricinoleate....

Embodiment 3

[0029] (1) Mix 100 parts of ricinoleic acid methyl ester and 48 parts of chloroform uniformly, add dropwise a mixture of 80 parts of trichloroacetyl chloride and 33 parts of pyridine to the reactant under a nitrogen atmosphere at 0°C, and then react at 10°C After 12 hours, after the reaction, 400 parts of ice water were added to wash, and then the organic layer was washed with 3% sodium bicarbonate solution and distilled water to pH=6, and then the water was distilled under reduced pressure to obtain acetyl ricinoleic acid methyl ester;

[0030] (2) Take 50 parts of 30% hydrogen peroxide, 20 parts of acetic acid, and 1 part of concentrated sulfuric acid to make peroxy acid. At 48℃, add 100 parts of methyl acetyl ricinoleate and 35 parts of benzene. Add dropwise for 90 minutes, and then react at 48°C for 5 hours. After the reaction, the lower layer of acid is separated, and the upper organic layer is washed with 3% sodium bicarbonate solution and distilled water, until the pH of t...

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Abstract

The invention discloses a method for improving the compatibility of an epoxidized methyl acetylricinolate plasticizer and PVC (Polyvinyl Chloride) resin. The method is characterized in that a utilizedacetylation reagent contains chlorine atoms with a certain quantity; the compatibility of the epoxidized methyl acetylricinolate plasticizer and the chlorine-containing PVC resin can be remarkably improved, so that the transferring resistance of the plasticizer is improved, and the flexibility and durability of a PVC product are improved. The plasticizer prepared by the method disclosed by the invention has no toxin and is environmentally friendly, can be used for replacing or partially replacing a phthalate plasticizer to produce products including polyvinyl chloride artificial leather, foodpackages, medical devices and the like, and has a wide application prospect.

Description

Technical field [0001] The invention relates to a method for improving the compatibility of epoxy acetyl ricinoleic acid methyl ester plasticizer and PVC resin, and belongs to the field of chemical additives. Background technique [0002] Polyvinyl chloride (PVC) resin is a high polymer containing a large number of polar chlorine atoms produced by the polymerization of vinyl chloride monomer. Due to the dipole-dipole interaction of the chlorine atom, the force between the PVC molecules is very large. If no plasticizer is added, PVC resin will be glassy at room temperature, which is difficult to process and poor product performance. Therefore, a certain amount of plasticizer needs to be added during the processing of PVC resin. Plasticizer molecules can penetrate into PVC chains, shield the interaction between chlorine atoms in PVC, increase the distance between PVC chains, weaken the force between PVC molecules, make PVC in a rubbery state within the temperature range of use, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/1515C08L27/06C07D301/16C07D303/42
CPCC07D301/16C07D303/42C08K5/1515C08L27/06
Inventor 陈意潘思宇侯德隆官小玉范浩军
Owner SICHUAN UNIV
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