A kind of fatty alcohol ester barium mercaptobenzoate and its preparation method, composition and application

A technology of barium mercaptobenzoic acid and alcohol ester, which is applied in the field of fatty alcohol ester barium mercaptobenzoate and its preparation, composition and application, and can solve the problems affecting the coloring and precipitation of PVC film, the dispersion of unfavorable stabilizers, and the stability of barium salts Poor stability and other problems, to achieve good static and dynamic thermal stability, save the amount of stabilizer, improve the effect of component compatibility

Active Publication Date: 2018-08-14
ZHEJIANG HIMPTON NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVC has its structural defects: it is unstable when heated, and it decomposes to release hydrogen chloride gas. The solution is to add heat stabilizers in PVC processing
[0004] However, the barium soap in the barium-zinc composite stabilizer is mainly formed by the reaction of carboxylic acid and barium hydroxide. The carboxylic acid is a general-purpose carboxylic acid, such as oleic acid, isooctanoic acid, benzoic acid, etc., and the barium salt obtained by the reaction is not stable. Good, and most of them are easy to precipitate during processing. The reason is that the compatibility between the barium salt obtained by the general-purpose carboxylic acid reaction and PVC resin is poor, which is not conducive to the dispersion of the stabilizer in the PVC resin. Uneven local heating will seriously affect the coloring and precipitation of PVC film

Method used

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  • A kind of fatty alcohol ester barium mercaptobenzoate and its preparation method, composition and application
  • A kind of fatty alcohol ester barium mercaptobenzoate and its preparation method, composition and application
  • A kind of fatty alcohol ester barium mercaptobenzoate and its preparation method, composition and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Put 155g of 2-mercaptobenzoic acid, 130g of isooctyl alcohol, and 1.6g of concentrated sulfuric acid into the reactor, stir, raise the temperature to 105°C, and continue the reaction for 3.5 hours at a vacuum of -0.06MPa, remove the generated water, and then wash with water to remove the concentrated Sulfuric acid, dehydration to obtain isooctyl mercaptobenzoate; mix the intermediate product of the above reaction with 165g butanediol methyl ether at 60-65°C for 30 minutes, then add 95g of barium hydroxide, heat up to 105°C, and react for 3.5 hour, dehydrated, filtered to obtain barium isooctyl mercaptobenzoate, and the content of barium was 13.50% after determination.

Embodiment 2

[0039] Put 155g of 2-mercaptobenzoic acid, 330g of behenyl alcohol (C22 alcohol), and 2.0g of concentrated sulfuric acid into the reactor, stir, heat up to 115°C, and continue the reaction for 2.5 hours at a vacuum of -0.09MPa to remove the generated water. Then wash with water to remove concentrated sulfuric acid, and dehydrate to obtain behenyl mercaptobenzoate; mix the intermediate product of the above reaction with 50g of butanediol methyl ether at 60-65°C for 40 minutes, then add 97g of barium hydroxide, and heat up to 115 ℃, reacted for 2.5 hours, dehydrated, and filtered to obtain barium behenyl mercaptobenzoate, and the content of barium was 11.86% after determination.

Embodiment 3

[0041] Put 155g of 2-mercaptobenzoic acid, 130g of high-carbon fatty alcohol (C12-14 alcohol), and 2.4g of concentrated sulfuric acid into the reactor, stir, heat up to 110°C, and continue the reaction for 3.0 hours at a vacuum of -0.075MPa, remove The generated water is then washed with water to remove concentrated sulfuric acid, and dehydrated to obtain a high-carbon fatty alcohol ester of mercaptobenzoic acid; the intermediate product of the above reaction is mixed with 100 g of butanediol methyl ether at 60-65 ° C for 40 minutes, and then put into hydrogen oxidation 97g of barium was heated up to 105° C., reacted for 3.5 hours, dehydrated, and filtered to obtain barium mercaptobenzoic acid high-carbon fatty alcohol ester. After measuring, the barium content was 13.18%.

[0042] Two, preparation of barium salt composition of fatty alcohol mercaptobenzoate

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Abstract

The invention relates to thiosalicylic acid fatty alcohol ester barium and a preparation method, composition and application thereof. Thiosalicylic acid fatty alcohol ester barium is synthesized according to the following process routes of 1 an esterification reaction, wherein reacting is continuously conducted for 2.5-3.5 h at the temperature of 105 DEG C to 115 DEG C and the vacuum degree of 0.06 MPa to 0.09 MPa by taking 2-thiosalicylic acid and C8-C22 fatty alcohol as raw materials and taking concentrated sulfuric acid as a catalyst, generated water is removed, then washing is conducted to remove concentrated sulfuric acid, and dewatering is conducted to obtain thiosalicylic acid fatty alcohol ester; 2 a metal saponification reaction, wherein an appropriate amount of solvent-butanediol methyl ether and barium hydroxide is added into the product obtained in the step 1, reacting is conducted for 2.5-3.5 h at the temperature of 105 DEG C to 115 DEG C, and after reacting is finished, dewatering and filtering are conducted. Thiosalicylic acid fatty alcohol ester barium can combine hydrogen chloride separated from PVC to terminate the automatic catalysis effect of hydrogen chloride and generate stable ester by substituting unstable chloride atoms on PVC chains by thiosalicylic acid fatty alcohol ester to prevent thermal decomposition of hydrogen chloride; thiosalicylic acid fatty alcohol ester barium belongs to thiolate and has the effects of an antioxidant, and the system stability is improved.

Description

technical field [0001] The invention relates to a barium fatty alcohol mercaptobenzoate and its preparation method, composition and application. Background technique [0002] Polyvinyl chloride (PVC) is the second largest plastic species after polyethylene. It has high strength, excellent corrosion resistance and insulation. Its products are widely used in construction, electrical appliances, toys, packaging and other industries. However, PVC has its structural defects: it is unstable when heated, and it decomposes to release hydrogen chloride gas. The solution is to add heat stabilizers in PVC processing. [0003] Barium-zinc composite metal soap stabilizer has been more and more widely used because of its no dust pollution in the production and application process, clean and environmentally friendly, easy to measure, and low price. Among them, barium zinc heat stabilizer is widely used in soft PVC because of its high heat stability and good transparency. [0004] However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C319/12C07C323/62C08L27/06C08K5/375C08K5/526
CPCC07C319/12C08K5/375C08K5/526C08L2201/08C07C323/62C08L27/06
Inventor 唐伟高尔金瞿英俊陈建军廖永林陈森方
Owner ZHEJIANG HIMPTON NEW MATERIAL
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