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A kind of preparation method of polypentaerythritol fatty acid ester

A technology of alcohol octaerythritol fatty acid ester and pentaerythritol, which is applied in the field of preparation of polypentaerythritol fatty acid ester, and achieves the effects of good synergy, excellent thermal stability, and low cost

Active Publication Date: 2016-07-06
FOSHAN RISUN HANKE PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the defects and technical deficiencies of existing polyvinyl chloride (PVC) stabilizers, to provide a polypentaerythritol fatty acid ester auxiliary stabilizer of auxiliary calcium / zinc for PVC processing and a preparation method thereof, At the same time, develop new monomers, study the best compound formula, and improve the preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The synthesis of dipentaerythritol myristate comprises the following steps:

[0034] S1. Add myristic acid and pyridine into a four-neck flask equipped with a reflux condenser, a stirrer, a thermometer and an air guide tube in a mass ratio of 1:5, and stir at a speed of 350r / min;

[0035] S2. Pass nitrogen into the mixture of S1, then according to the ratio of fatty acid: dipentaerythritol=1:10, at a speed of 20 drops / min, drop dipentaerythritol into the mixture at a constant speed with a constant pressure funnel, in the solid superacid catalyst S 2 o 8 2- / ZrO 2 -TiO 2 -Al 2 o 3 Under the action of the esterification reaction, the esterification reaction is carried out under the reaction conditions of about 240 ° C, and the reaction end point is judged by measuring the pH value (acidity) and the water output;

[0036] S3. The product obtained in S2 was evaporated to remove pyridine under reduced pressure, decolorized, and filtered to obtain dipentaerythritol myri...

Embodiment 2

[0038] The synthesis of dipentaerythritol 2-ethylbutyrate comprises the following steps:

[0039] S1. Add 2-ethylbutyric acid and xylene into a four-neck flask equipped with a reflux condenser, a stirrer, a thermometer and an air guide tube according to a mass ratio of 1:7, and stir at a speed of 550r / min;

[0040] S2. Feed nitrogen into the mixture of S1, then according to the ratio of fatty acid: dipentaerythritol=1:1, at a speed of 6 drops / min, drop dipentaerythritol into the mixture at a constant speed with a constant pressure funnel, in the solid superacid catalyst S 2 o 8 2- / ZrO 2 -TiO 2 -Al 2 o 3 Under the action of the reaction, the esterification reaction is carried out under the reaction conditions of about 200 ° C, and the reaction end point is judged by measuring the pH value (acidity) and the water output;

[0041] S3. The product obtained in S2 was evaporated to remove xylene under reduced pressure, decolorized, and filtered to obtain dipentaerythritol 2-e...

Embodiment 3

[0043] The synthesis of dipentaerythritol octanediol adipate comprises the following steps:

[0044] S1. Add adipic acid into a four-necked flask equipped with a reflux condenser, a stirrer, a thermometer, and an air guide tube. At a speed of 20 drops / min, use a constant pressure funnel to drop 2 times the amount of adipic acid at a constant speed. -Ethyl-1,3-hexanediol, reacted at 60°C for 6h;

[0045] S2. At a speed of 6-20 drops / min, drop the mixture of S1 into a four-necked bottle of thionyl chloride filled with 2 times of adipic acid at a constant speed with a constant pressure funnel, and reflux at 60°C for 10 hours. Obtain adipate bis(acyl chloride) octyl chloride;

[0046] S3. in the product that S2 obtains, add 2 times of the dipentaerythritol of adipic acid, in solid superacid catalyst S2 o 8 2- / ZrO 2 -TiO 2 -Al 2 o 3 Under the action of N-methylpyrrolidone, it was reacted at room temperature for 12 hours, filtered, neutralized with acetic acid capping, and e...

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Abstract

The invention discloses a multi-pentaerythritol fatty acid ester preparation method, and discloses an application of multi-pentaerythritol fatty acid ester in preparing a calcium / zinc auxiliary multi-pentaerythritol fatty acid ester co-stabilizer used in PVC processing. The obtained multi-component complex calcium / zinc stabilizer has excellent characteristics of high thermal stability efficiency and low cost. A PVC product adopting the calcium / zinc stabilizer with the auxiliary multi-pentaerythritol fatty acid ester is non-toxic, and has good thermal stability, light stability, transparency, and weatherability. Different multi-pentaerythritol fatty acid ester auxiliary calcium / zinc composite systems can be prepared according to different product requirements. When most of the multi-pentaerythritol fatty acid ester auxiliary calcium / zinc composite systems are used for stabilizing plasticized PVC, enough self-lubricating property can be provided, and the product has certain halogen-free flame retardant property and high insulation.

Description

technical field [0001] The invention belongs to the technical field of chemical materials. More specifically, it relates to a preparation method of polypentaerythritol fatty acid ester. Background technique [0002] Pentaerythritol is a very important organic chemical raw material, widely used in resins, coatings, chemicals, pharmaceuticals, national defense and other industrial sectors. Pentaerythritol and its derivatives are mainly used to produce lubricants, plasticizers, surfactants, emulsifiers, medicines, pesticides, explosives, etc. Pentaerythritol fatty acid ester as a plasticizer has good performance, high temperature resistance, low volatility, and is not easy to migrate. It is used in high-end products. [0003] Lead-free, low-lead, low-dust, non-toxic, composite and high-efficiency are the consumption and development directions of PVC heat stabilizers. Calcium / zinc composite stabilizer is generally regarded as a relatively safe product by domestic and foreign ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/08C07C69/33C07C69/44C07C69/82C08K5/103C08L27/06
CPCC07C67/08C08K5/103C08L2201/02C08L2201/08C08L2201/22C08L2203/202C07C69/33C07C69/44C08L27/06
Inventor 陈斌陈坚陈旭东
Owner FOSHAN RISUN HANKE PLASTIC TECH
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