Curing agent prepared from TMPTA production wastewater and method of curing agent

A technology for curing agent and waste water is applied in the field of curing agent prepared by using TMPTA waste water, which can solve the problems of secondary pollution, waste, and large energy consumption.

Inactive Publication Date: 2017-06-23
SUZHOU DINGYU ENERGY EFFICIENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production of trimethylolpropane triacrylate (TMPTA), a large amount of waste water is generated, which seriously pollutes the environment
In the prior art, manufacturers of trimethylolpropane triacrylate (TMPTA) evaporate and concentrate wastewater to obtain a solid substance that has no value and cannot be decomposed in the soil, and transports it to "remote" areas for landfill. Causes secondary pollution; Concentration consumes a lot of energy, and the processing cost is extremely high
And the production wastewater of trimethylolpropane triacrylate (TMPTA) contains a large amount of acrylic acid and sodium acrylate, and acrylic acid and sodium acrylate are important chemical raw materials, and a single concentrated landfill causes great waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] S1: Concentrate 50 parts of TMPTA industrial wastewater by evaporation under reduced pressure to a sodium acrylate concentrate with a sodium acrylate content of 35%;

[0023] S2: Add 10 parts of 4-acetylaminosalicylic acid, 3 parts of L-cysteine, 8 parts of 2-ethylhexyl salicylate, and 6 parts of ethyl acetate to step S1, and raise the temperature to 60 ℃, keep warm for 20 minutes;

[0024] S3: Add 9 parts of 5-nitrofurfural diacetate, 3 parts of 2-thiophene carboxaldehyde, and 7 parts of dimercaprol into step S2, continue to raise the temperature to 80°C, and stir and react at a rate of 800r / min for 1h;

[0025] S4: Add 2 parts of 5-hydroxytryptamine and 4 parts of eugenol to step S3, stir for 5 minutes, and react with microwave at a power of 3500W for 20 minutes; the curing agent can be obtained after the reaction is cooled.

Embodiment 2

[0031] S1: Concentrate 80 parts of TMPTA industrial wastewater by vacuum evaporation to a sodium acrylate concentrate with a sodium acrylate content of 55%;

[0032] S2: Add 15 parts of 4-acetylaminosalicylic acid, 8 parts of L-cysteine, 12 parts of 2-ethylhexyl salicylate, and 10 parts of ethyl acetate to step S1, and raise the temperature to 80 ℃, keep warm for 40 minutes;

[0033] S3: Add 14 parts of 5-nitrofurfural diacetate, 6 parts of 2-thiophene carboxaldehyde, and 12 parts of dimercaprol into step S2, continue to raise the temperature to 110°C, and stir and react at a rate of 1200r / min for 2h;

[0034] S4: Add 5 parts of 5-hydroxytryptamine and 8 parts of eugenol to step S3, stir for 15 minutes, and react with microwave at a power of 3500W for 30 minutes; the curing agent can be obtained after the reaction is cooled.

Embodiment 3

[0040] S1: Concentrate 60 parts of TMPTA industrial wastewater by evaporation under reduced pressure to a sodium acrylate concentrate with a sodium acrylate content of 35%;

[0041] S2: Add 11 parts of 4-acetylaminosalicylic acid, 4 parts of L-cysteine, 9 parts of 2-ethylhexyl salicylate, and 7 parts of ethyl acetate to step S1, and raise the temperature to 60 ℃, keep warm for 40 minutes;

[0042] S3: Add 10 parts of 5-nitrofurfural diacetate, 4 parts of 2-thiophene carboxaldehyde, and 8 parts of dimercaprol into step S2, continue to raise the temperature to 90° C., and stir for 2 hours at a rate of 800 r / min;

[0043] S4: Add 3 parts of 5-hydroxytryptamine and 5 parts of eugenol to step S3, stir for 10 minutes, and react with microwave at a power of 3500W for 30 minutes; the curing agent can be obtained after the reaction is cooled.

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PUM

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Abstract

The invention discloses a curing agent prepared from TMPTA production wastewater. The curing agent is prepared from the following raw materials in parts by weight: 50-80 parts of TMPTA industrial wastewater, 10-15 parts of 4-acetamidosalicylic acid, 3-8 parts of L-cysteine, 8-12 parts of salicylic acid-2-ethyl hexyl ester, 6-10 parts of ethyl acetate, 9-14 parts of 5-nitrofurfural diacctate, 3-6 parts of 2-thiophenecarboxaldehyde, 4-8 parts of eugenol, 2-5 parts of 5-hydroxytryptamine and 7-12 parts of dimercaprol. The curing agent with excellent performance is prepared by adding multiple organic chemical components to production wastewater of trihydroxymethyl propane triacrylate (TMPTA) after simple concentration.

Description

technical field [0001] The invention belongs to the field of TMPTA waste water treatment, in particular to a curing agent prepared by producing TMPTA waste water and a method thereof. Background technique [0002] Trimethylolpropane triacrylate (TMPTA) is an important chemical raw material, mainly used in the manufacture of photocurable coatings, photocurable inks, photoresist, flexographic printing, solder resist, resist, paint and polymer modification sex etc. During the production of trimethylolpropane triacrylate (TMPTA), a large amount of waste water is generated which seriously pollutes the environment. In the prior art, manufacturers of trimethylolpropane triacrylate (TMPTA) evaporate and concentrate wastewater to obtain a solid substance that has no value and cannot be decomposed in the soil, and transports it to "remote" areas for landfill. Cause secondary pollution; Concentration needs to consume a lot of energy, and the processing cost is extremely high. Moreov...

Claims

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Application Information

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IPC IPC(8): C08G59/40C08G59/46C08G59/60C08G59/62C08G59/66
CPCC08G59/40C08G59/4014C08G59/4064C08G59/46C08G59/60C08G59/621C08G59/66
Inventor 陈红嘉
Owner SUZHOU DINGYU ENERGY EFFICIENT EQUIP
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