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A kind of preparation method of chrome-containing sludge modified acrylic resin

A technology of acrylates and chromium sludge, which is applied in the field of preparation of modified acrylate resins using chromium-containing sludge from tanning, can solve the problems of high processing costs and increased production costs of tanning, and achieve the goal of improving stability Effect

Inactive Publication Date: 2021-07-02
山东德瑞高分子材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the country's environmental protection requirements become increasingly stringent, the cost of treating chromium-containing sludge from tannery as solid waste from tannery is getting higher and higher. Tannery factories in Jinjiang and Haining must be handed over to local waste centers with treatment qualifications for incineration For processing, you need to pay 2,000~3,000 yuan per ton, which will increase the production cost of tanning invisibly, so it is necessary to find a feasible way to recycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] A method for preparing acrylic resin modified by chromium-containing sludge, which consists of 60 kg of acrylic resin, 2.1 kg of crosslinking agent, 2 kg of isooctyl trichlorosilane, 2,6 di-tert-butyl 3 kg of p-cresol, 1 kg of benzotriazole, 1.2 kg of diethyl phthalate, 5 kg of chromium-containing sludge and 1 kg of substance A are mixed evenly, and the drying, batching, mixing, kneading, and cooling of the raw materials are followed. , the granulation process is made, and the obtained acrylic resin is obtained.

[0020] The cross-linking agent is 2g of sodium citrate and 2.1g of sodium carboxymethylcellulose added to 13g of water, reacted at 80°C for 1h, then added 2.7g of aluminum sulfate, 0.7g of 4-methoxy salicylamide and 2.1g of sulfonamide g, react at 70°C for 1.5h, and spray dry to obtain a crosslinking agent.

[0021] The substance A is to take 2.5g of cetyl alcohol and 8.3g of iminodiacetic acid in a three-necked flask, stir at 80°C for 40min, adjust the react...

example 2

[0023] A method for preparing acrylic resin modified by chromium-containing sludge, which consists of 75 kg of acrylic resin, 3.7 kg of crosslinking agent, 4 kg of isooctyl trichlorosilane, 4-hydroxy dodecane Acid anilide is 6kg, benzotriazole 2kg, diethyl phthalate 3.3kg, chromium-containing sludge 7kg and substance A 2kg are mixed evenly, according to raw material drying, batching, mixing and stirring, kneading, cooling stay, Produced through the pelletizing process to obtain an acrylic resin.

[0024] The cross-linking agent is 2g of sodium citrate and 2.1g of sodium carboxymethylcellulose added to 13g of water, reacted at 80°C for 1h, then added 2.7g of aluminum sulfate, 0.7g of 4-methoxy salicylamide and 2.1g of sulfonamide , React at 70°C for 1.5h, and spray dry to obtain a cross-linking agent.

[0025] The substance A is to take 2.5g of cetyl alcohol and 8.3g of iminodiacetic acid in a three-necked flask, stir at 80°C for 40min, adjust the reaction temperature to 60°C,...

example 3

[0027] A method for preparing acrylic resin modified by chromium-containing sludge, which consists of 67 kg of acrylic resin, 2.9 kg of crosslinking agent, 3 kg of isooctyltrichlorosilane, and 4.5 kg of antioxidant 1076 according to parts by weight , 2-succinimidyl-1,1,3,3-tetramethyluronium tetrafluoroborate 1.5kg, diethyl phthalate 2.2kg, chromium-containing sludge 6kg and substance A 1.5kg mixed Uniform, according to the process of drying raw materials, batching, mixing, kneading, cooling strands, and cutting into pellets, the obtained acrylic resin is obtained.

[0028] The cross-linking agent is 2g of sodium citrate and 2.1g of sodium carboxymethylcellulose added to 13g of water, reacted at 80°C for 1h, then added 2.7g of aluminum sulfate, 0.7g of 4-methoxy salicylamide and 2.1g of sulfonamide g, react at 70°C for 1.5h, and spray dry to obtain a crosslinking agent.

[0029] The substance A is to take 2.5g of cetyl alcohol and 8.3g of iminodiacetic acid in a three-necked ...

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Abstract

A method for preparing acrylic resin modified by chromium-containing sludge, which is composed of 60-75 parts by weight of acrylic resin, 2.1-3.7 parts by weight of crosslinking agent, isooctyltrichlorosilane 2 ~4 parts by weight, 3~6 parts by weight of antioxidant, 1~2 parts by weight of catalyst, 1.2~3.3 parts by weight of diethyl phthalate, 5~7 parts by weight of chromium-containing sludge and 1~2 parts by weight of substance A The acrylic resin is obtained by mixing evenly according to the processes of drying raw materials, batching, mixing, mixing, kneading, cooling, and pelletizing. The advantage of this method is that chromium does not migrate during the use of acrylic resin.

Description

technical field [0001] The invention relates to a method for preparing an acrylic resin, in particular to a method for preparing acrylic resin modified by utilizing chromium-containing sludge from tanning. Background technique [0002] Acrylic resin is a resin made by the copolymerization of acrylates and methacrylates and other ethylenic monomers. By choosing different resin structures, different formulations, production processes and solvents, it can be synthesized with different types, different properties and Acrylic resins for different applications, acrylic resins can be divided into thermoplastic acrylic resins and thermosetting acrylic resins according to the difference in structure and film-forming mechanism. The main absorption peak of the acrylic resin copolymerized with acrylate and methacrylate monomers is outside the solar spectrum range, so the prepared acrylic resin paint has excellent light resistance and outdoor aging performance. [0003] Thermoplastic ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/08C08L1/28C08K13/08C08K11/00C08K5/3475C08K5/55C08K5/46
CPCC08L33/08C08L1/286C08K13/08C08K11/005C08K5/3475C08K5/55C08K5/46
Inventor 段宝荣徐爱华梁明
Owner 山东德瑞高分子材料股份有限公司