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Preparation method for polymer fat-liquoring agent containing sulfosuccinate salt structure

A technology of sulfosuccinate and polymer, which is applied in the chemical treatment of small raw hides/large raw hides/leather hides/furs, animal husbandry, applications, etc. Problems such as low copolymerization activity of intermediates, to achieve good stability and reduce COD content

Active Publication Date: 2015-07-29
四川德赛尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymerization activity of maleic acid esters is very poor. When using hydrophilic monomers such as acrylic acid or methacrylic acid for copolymerization, the copolymerization activity of maleic acid ester intermediates is very low, the residual amount of intermediates is large, and the composition and distribution of polymer products Large variance, poor application performance
When styrene, vinyl acetate and other highly hydrophobic monomers are used to copolymerize with maleic anhydride ester, the copolymerization effect can be improved, but the water solubility, emulsification and stability of the product will decrease, and the product is resistant to acid and electrolyte The ability is very poor, it is not easy to meet the requirements of the tanning and fatliquoring process conditions, and the application effect is not ideal

Method used

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  • Preparation method for polymer fat-liquoring agent containing sulfosuccinate salt structure
  • Preparation method for polymer fat-liquoring agent containing sulfosuccinate salt structure

Examples

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Effect test

Embodiment 1

[0028] A preparation method of a polymer fatliquoring agent containing sulfosuccinate salt structure, specifically comprising the following steps:

[0029] (1) 1.0mol castor oil is added in the reactor, the temperature is raised to 60° C., 0.5mol maleic anhydride is dropped into, and the esterification reaction is carried out for 3 hours to obtain intermediate A;

[0030] (2) Add 0.065g initiator AIBN to intermediate A, drop 0.5mol styrene within 15 minutes, keep the reactor temperature at 70°C, add 0.065g AIBN every 30 minutes, add 3 times altogether, Last insulation 55min, obtain polymer B;

[0031] (3) Add 2.5mol maleic anhydride to polymer B, and react at 70°C for 3 hours to obtain polymer C;

[0032] (4) Cool the polymer C to 60°C, adjust the pH to 6.5 with a 30% NaOH aqueous solution, add 1000g of a 30% aqueous sodium sulfite solution, heat up to 80°C and react for 3 hours. Polymer fatliquoring agent with succinate salt structure.

Embodiment 2

[0034] A preparation method of a polymer fatliquoring agent containing sulfosuccinate salt structure, specifically comprising the following steps:

[0035] (1) Add 0.1mol castor oil to the reactor, heat up to 90°C, drop in 0.15mol maleic anhydride, react for 6 hours, and obtain intermediate A;

[0036] (2) Add 0.81g initiator AIBN to intermediate A, drop 1.5mol methacrylic acid in 45 minutes, keep the temperature of the reactor at 90°C, add 0.81g AIBN every 60 minutes, and add 7 time, and finally keep warm for 65min to obtain polymer B;

[0037] (3) Add 0.15mol maleic anhydride to polymer B, and react at 90°C for 6h to obtain polymer C;

[0038] (4) Cool the polymer C to 70°C, adjust the pH to 7.5 with a 30% NaOH aqueous solution, add 100 g of a 30% sodium metabisulfite aqueous solution, heat up to 90°C and react for 5 hours, and cool down to obtain the Polymer fatliquoring agent with succinate salt structure.

Embodiment 3

[0040] A preparation method of a polymer fatliquoring agent containing sulfosuccinate salt structure, specifically comprising the following steps:

[0041] (1) Add 0.1mol castor oil and 0.1mol glycerol monooleate into the reactor, heat up to 80°C, drop in 0.2mol itaconic anhydride, react for 5 hours, and obtain intermediate A;

[0042] (2) Add 0.42g initiator AIBN to intermediate A, add 0.5mol methacrylic acid and 0.5mol stearyl methacrylate dropwise within 30 minutes, keep the temperature of the reactor at 85°C, and add it every 45 minutes 0.42g of initiator AIBN was added 4 times in total, and finally kept warm for 60min to obtain polymer B;

[0043] (3) Add 0.3 mol of maleic anhydride to polymer B, and react at 80° C. for 4 hours to obtain polymer C;

[0044] (4) Cool the polymer C to 65°C and adjust the pH to 7.0 with a 30% NaOH aqueous solution by mass fraction, add 88.2g of a 30% aqueous sodium sulfite solution, heat up to 85°C and react for 4 hours. Polymer fatliquoring...

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Abstract

The invention discloses a preparation method for a polymer fat-liquoring agent containing a sulfosuccinate salt structure. The preparation method comprises the following specific steps of performing mono-esterification reaction on poly-hydroxy compound and unsaturated anhydride so as to prepare an intermediate A; performing reaction on the intermediate A, a vinyl monomer and an initiator, so as to prepare a polymer B containing active hydroxyls; further esterifying the polymer B by use of maleic anhydride; sulfonating by sulfite after regulating the pH, thereby obtaining the polymer fat-liquoring agent. The polymer fat-liquoring agent is obviously improved in aspects of stability, water solubility, acid resistance, fat liquoring effect, filling property and fat extraction resistance, and further can be used for reducing the COD (Chemical Oxygen Demand) content of waste liquid.

Description

technical field [0001] The invention belongs to the field of leather chemical preparation, and in particular relates to a preparation method of a polymer fatliquoring agent containing a sulfosuccinate salt structure. Background technique [0002] Fatliquor is the most used leather chemical in leather processing. The traditional fatliquoring agent is a combination of oil modification products of small molecules, surfactants and neutral oils, etc. Its function is to lubricate leather fibers and make leather soft. Polymer fatliquor is a new type of leather chemical with a novel structure. Its molecular structure has both long-chain alkanes that can lubricate leather fibers and low-molecular-weight polymers containing hydrophilic groups such as carboxyl groups. This structure makes it In addition to fatliquor, it also has the function of retanning and filling. Polymer fatliquor can not only combine the functions of retanning and fatliquoring into one, and reduce the operating ...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/06C08F220/18C08F220/34C08F218/08C08F222/20C08F222/22C08F8/46C08F8/44C14C9/02
Inventor 彭章义孙青永丁学斌冉祎
Owner 四川德赛尔新材料科技有限公司
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