Preparation method of chelating dispersant

A technology for chelating dispersant and raw materials, which is applied in the field of preparation of chelating dispersant, can solve the problem of uncoordinated properties of chelating dispersant, and achieve the effects of good flocculation and sedimentation effect, good dispersion, and avoidance of contamination again.

Inactive Publication Date: 2017-02-22
秦瑶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to provide a kind of preparation method of chelating dispersant, can overcome the defect that existing chelating dispersing agent performance is uncoordinated

Method used

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  • Preparation method of chelating dispersant

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Embodiment 1

[0016] A kind of preparation method of chelating dispersant, each raw material is measured in parts by mass, comprises the following steps:

[0017] a. Dissolve 10 parts of maleimide and 12 parts of acrylamide in 65 parts of deionized water, and dissolve 0.2 part of sodium persulfate in 30 parts of deionized water to form a solution for later use;

[0018] b. Put 20 parts of polyoxyethylene lauryl ether-15 maleic anhydride monoester sodium salt, 15 parts of diallylamine and 234 parts of deionized water into the reactor, stir, dissolve, and heat up to 70°C;

[0019] c. Add 1 / 3 volume of maleimide and acrylamide aqueous solution and 1 / 4 volume sodium persulfate aqueous solution to the reaction kettle to initiate the reaction and keep it warm for 30 minutes;

[0020] d. Within 2 hours, drop the remaining maleimide and acrylamide aqueous solution, sodium persulfate aqueous solution and 20 parts of acrylic acid into the reactor of step b, and then keep the reaction at 80°C for 2 ho...

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Abstract

The invention relates to a preparation method of a chelating dispersant. The preparation method comprises steps as follows: a, 10 parts of maleimide and 12 parts of acrylamide are dissolved with 65 parts of deionized water, 0.2 parts of sodium persulfate is dissolved with 30 parts of deionized water, and a solution is formed for later use; b, 20 parts of dodecyl polyoxyethylene ether, 15 parts of maleic anhydride sodium monoester, 15 parts of diallylamine and 234 parts of deionized water are added to a reactor, dissolved and heated to 70 DEG C; c, 1/3 of a maleimide and maleicamide aqueous solution in volume and 1/4 of a sodium persulfate water solution in volume are added to a reaction kettle and kept at the temperature for 30 min; d, the remaining maleimide and maleicamide aqueous solution, the remaining sodium persulfate water solution and 20 parts of acrylic acid are dropwise added within 2 h and kept at 80 DEC G, and the mixture reacts for 2 h; e, the temperature of the reactor is reduced to 30 DEG C, 8 parts of sodium hydroxide are added firstly, 14 parts of carbon disulfide are added after dissolution, the mixture reacts for 3 h and is filtered, and the chelating dispersant is obtained.

Description

technical field [0001] The invention relates to a preparation method of a chelating dispersant, belonging to the field of metal ion chelating dispersants. Background technique [0002] Chelating dispersant is a highly efficient and multi-purpose organic chelate, used in multiple processes in the printing and dyeing industry, it can soften water quality, and prevent Ca 2+ , Mg 2+ , Fe 3+ Metal ions have strong chelating power and scum dispersing power to prevent the formation of sediment and scum produced by other dirt during the dyeing and finishing process, and can slowly dissolve and remove the silica scale and calcium soap precipitation in the equipment It can prevent metal salts from recontaminating various fibers, improve the whiteness, vividness and color fastness of bleached, dyed and printed products, and prevent the white background of printed products and yarn-dyed products from recontaminating. Sewage. However, the existing chelating dispersants have the disad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F222/40C08F220/56C08F226/04C08F220/06C08F8/00
CPCC08F283/065C08F8/34C08F222/40C08F220/56C08F226/04C08F220/06
Inventor 秦瑶
Owner 秦瑶
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