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Modified tripropylene glycol diacrylate and preparation method thereof

A technology of tripropylene glycol diacrylate and tripropylene glycol, which is applied in the field of modified tripropylene glycol diacrylate and its preparation, can solve the problems of large environmental pollution, poor environmental protection performance, low product yield, etc. The effect of fast curing rate, less by-products and high product yield

Active Publication Date: 2013-04-10
JIANGSU SANMU GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional method of producing this monomer is generally esterification first, after the reaction is complete, it will undergo multiple washings, neutralization and extraction, and finally desolventize. This production process will produce a large amount of waste water and cause great environmental pollution. , poor environmental performance, and low product yield

Method used

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  • Modified tripropylene glycol diacrylate and preparation method thereof

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Effect test

Embodiment 1

[0024] The preparation method of modified tripropylene glycol diacrylate, it may further comprise the steps:

[0025] (1) 40 parts of tripropylene glycol, 5 parts of polyester diol PD, 3 parts of pentaerythritol, 35 parts of acrylic acid, 2 parts of catalyst p-toluenesulfonic acid, 0.105 parts of polymerization inhibitor (polymerization inhibitor includes p-hydroxy Anisole 1000ppm, copper chloride 200ppm), cyclohexane 20 parts, put into the reactor and stir evenly, open the steam valve and heat slowly, control the steam pressure at 0.5Mpa, raise the temperature to 70~80°C, and keep it for 30 minutes, keep The vapor pressure is 0.5Mpa, and then the temperature is raised to 90~93°C. After 5 hours of reaction, the temperature is controlled to 93°C, refluxed for 12~15 hours, and the sample is sent for inspection. When the esterification acid value is 40~50mg KOH / g, stop reaction, standby;

[0026] (2) get the product after the esterification of step (1) into the washing kettle th...

Embodiment 2

[0029] The preparation method of modified tripropylene glycol diacrylate, it may further comprise the steps:

[0030] (1) 30 parts of tripropylene glycol, 3 parts of polyester diol PD, 3 parts of pentaerythritol, 30 parts of acrylic acid, 1 part of catalyst methanesulfonic acid, 0.09 part of polymerization inhibitor (polymerization inhibitor comprises p-hydroxyanisole 1000ppm, copper chloride 100ppm, 15 parts of n-hexane, put into the reactor and stir evenly, open the steam valve and heat slowly, control the steam pressure at 0.6Mpa, raise the temperature to 70~80℃, keep it for 40 minutes, then raise the temperature to 90~93 ℃, after reacting for 4 hours, raise the temperature to 93~95℃, reflux for 12~15 hours, take a sample for inspection, and when the esterification acid value is 40~50mg KOH / g, stop the reaction and set aside;

[0031] (2) get the product after the esterification of step (1) into the washing kettle through a pump, wash three times with a concentration of 15...

Embodiment 3

[0034] The preparation method of modified tripropylene glycol diacrylate, it may further comprise the steps:

[0035] (1) 50 parts of tripropylene glycol, 8 parts of polyester diol PD, 8 parts of pentaerythritol, 45 parts of acrylic acid, 9 parts of catalyst silicotungstic acid, 0.135 parts of polymerization inhibitor (polymerization inhibitor includes p-hydroxyanisole 3000ppm, 200ppm ferrous sulfate, 300ppm copper chloride), 30 parts of benzene, put into the reactor and stir evenly, open the steam valve and heat slowly, control the steam pressure at 0.5Mpa, raise the temperature to 70~80°C, keep it for 50 minutes, and then raise the temperature to 90~93°C, after reacting for 5 hours, raise the temperature to 93~95°C, reflux for 12~15 hours, take a sample for inspection, and when the esterification acid value is 40~50mg KOH / g, stop the reaction and set aside;

[0036] (2) get the product after the esterification of step (1) into the washing kettle through a pump, wash three ti...

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Abstract

The invention discloses a modified tripropylene glycol diacrylate and a preparation method thereof. The modified tripropylene glycol diacrylate is prepared from the following raw materials in parts by weight: 30-50 parts of tripropylene glycol, 3-8 parts of polyesterglycol PD, 3-8 parts of pentaerythritol, 30-45 parts of acrylic acid, 1-10 parts of catalyst, 10-30 parts of solvent, and polymerization inhibitor accounting for 1000-3000 ppm parts of the acrylic acid. After performing abundant experiments, the composition and proportion of the components are selected, so that the invention has the advantages of higher photocuring speed, higher film hardness, better properties and wider application range. By performing abundant experiments, the preparation technique is selected, so that the preparation method has strong operability. Especially, by performing abundant experiments, the special efficient composite polymerization inhibitor and catalyst are selected, so that the preparation technique has the advantages of greatly reduced neutralization extract frequency, less wastewater emission, environmental protection, fewer byproducts, higher product yield, higher quality stability and better product performance.

Description

technical field [0001] The invention relates to an acrylate, in particular to a modified tripropylene glycol diacrylate with fast photocuring rate and high coating film hardness and a preparation method thereof. Background technique [0002] Tripropylene glycol diacrylate is a new type of bifunctional acrylate monomer, which has the characteristics of low viscosity and low irritation. It has good solubility for most acrylated prepolymers and has relatively high activity. Large, can be widely used in many fields, such as photocurable coatings, printing inks, adhesives and composite materials, etc., its cured film has strong flexibility, low shrinkage, etc., is a high-performance reactive diluent . The conventional method of producing this monomer is generally esterification first, after the reaction is complete, it will undergo multiple washings, neutralization and extraction, and finally desolventize. This production process will produce a large amount of waste water and ca...

Claims

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Application Information

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IPC IPC(8): C07C69/54C07C67/08
Inventor 薛中群惠正权王启杰诸葛玉香
Owner JIANGSU SANMU GROUP CORPORATION
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