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A kind of quaternized lignin-based dispersant, preparation process and application

A lignin-based, quaternized reagent technology, applied in the field of environment-friendly materials, dispersants, and fine chemicals, can solve the problems of inability to change the surface activity of lignosulfonate and high price, and achieve easy-to-obtain and low-cost production raw materials , The effect of simple production process

Active Publication Date: 2016-09-07
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compounding cannot change the surface activity of lignosulfonate, such as lipophilic groups and hydrophilic groups, and the price is relatively high

Method used

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  • A kind of quaternized lignin-based dispersant, preparation process and application
  • A kind of quaternized lignin-based dispersant, preparation process and application
  • A kind of quaternized lignin-based dispersant, preparation process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1. The raw material components used in this embodiment are as follows (unit: kilogram):

[0063] Pulping black liquor (wheat straw, Achnatherum splendens, eucalyptus pulp black liquor mixture, mass ratio 3:2:2, solid content 58%): 540.0 kg;

[0064] Sulfamic acid: 52.2 kg;

[0065] Benzoic acid: 16.0 kg;

[0066] Phenol: 34.8 kg;

[0067] Formaldehyde: 53.9 kg;

[0068] Sodium sulfite: 76.3 kg;

[0069] 1-Chloro-2 hydroxypropyltrimethylammonium chloride: 86.3 kg;

[0070] Water: 140.5 kg.

[0071] 2. Preparation process steps and parameters:

[0072] Into the reactor, add 16.0 kg of benzoic acid and 34.8 kg of phenol and 53.9 kg of formaldehyde at 100°C for 0.5 h, add 540.0 kg of pulping black liquor with a solid content of 58%, and heat up to 40°C, add 52.2 kg of sulfamic acid, and adjust the pH value of the reaction system to 12.0, add 76.3 kg of sodium sulfite to react at 110°C for 3 hours, then add 86.3 kg of 1-chloro-2-hydroxypropyl The trimethylammonium ch...

Embodiment 2

[0074] 1. The raw material components used in this embodiment are as follows (unit: kilogram):

[0075] Pulping black liquor (rice straw, birch, masson pine kraft pulping black liquor mixture, mass ratio 3:2:1, solid content 50%): 495.3 kg;

[0076] p-Sulfuran: 41.3 kg;

[0077] Benzoic acid: 30.0 kg;

[0078] Phenol: 75.0 kg;

[0079] Acetaldehyde: 26.4 kg;

[0080] Sodium bisulfite: 150.0 kg;

[0081] Lauryl dimethyl benzyl ammonium chloride: 22.5 kg;

[0082] Water: 159.5 kg.

[0083] 2. Preparation process steps and parameters:

[0084] In the reactor, add successively 30.0 kilograms of benzoic acid and 75.0 kilograms of phenol, and 26.4 kilograms of acetaldehyde at 90°C for 1 hour, then add 495.3 kilograms of pulping black liquor with a solid content of 58%, and heat up to 60°C, add 41.3 kg of p-aminobenzenesulfonic acid, adjust the pH value of the reaction system to 11.0, add 150.0 kg of sodium bisulfite to react at 90°C for 2 hours, and then add 22.5 kg of dodecy...

Embodiment 3

[0086] 1. The raw material components used in this embodiment are as follows (unit: kilogram):

[0087] Pulping black liquor (mixture of bamboo, bagasse, and awn stem pulping black liquor, the mass ratio is 7:2:1, and the solid content is 60%): 458.8 kg;

[0088] Amethanesulfonic acid: 45.9 kg;

[0089] Benzoic acid: 4.5 kg;

[0090] Phenol: 8.0 kg;

[0091] Acrolein: 10.0 kg;

[0092] Sodium metabisulfite: 25.0 kg;

[0093] Octadecyl dimethyl hydroxyethyl ammonium nitrate: 40.0 kg;

[0094] Water: 407.8 kg.

[0095] 2. Preparation process steps and parameters:

[0096] Add 4.5 kg of benzoic acid, 8.0 kg of phenol, and 10.0 kg of acrolein to the reactor in sequence, react at 85°C for 1.5 hours, add 458.8 kg of pulping black liquor with a solid content of 60%, and raise the temperature to 30°C, add 45.9 kg of aminomethanesulfonic acid, and adjust the pH value of the reaction system to 13.0, add 25.0 kg of sodium metabisulfite to react at 110°C for 2.5 hours, and then add...

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Abstract

The invention discloses a quaternization lignin-base dispersing agent and a preparation process and application thereof. The preparation process comprises the following steps: reacting benzoic acid, phenol and an aldehyde compound for 0.5-3h at the temperature of 60-110 DEG C, wherein the mass fraction of the aldehyde compound is 1.0-9.0 percent; adding black pulping liquor of which the solid content is 18.3-60 percent, raising the temperature to 20-80 DEG C, adding a sulfonic amino compound of which the mass fraction is 1.3-8.0 percent, adjusting the pH value to 10.0-13.5, and adding a sulfonating agent of which the mass fraction is 2.5-11.0 percent; enabling reaction for 2-5h at the temperature of 95-180 DEG C, and then adding a quaternization reagent of which the mass fraction is 4.0-10.0 percent, enabling reaction for 2-4h at the temperature of 70-100 DEG C, performing cooling and discharging to obtain brown liquid, and performing spray drying to obtain a solid powder product. The quaternization lignin-base dispersing agent has multiple functions of dispersing, complexing, chelating and the like, and can be applied to multiple fields of dye dispersing agents, concrete water reducing agents, ceramic additives and the like.

Description

technical field [0001] The invention belongs to the fields of fine chemicals, environment-friendly materials and dispersants, and in particular relates to a quaternized lignin-based dispersant, its preparation process and application. Background technique [0002] Lignin is a natural polymer substance with a phenolic structure. As one of the most abundant renewable resources on the earth, lignin widely exists in woody plants, herbaceous plants, and vascular plants, and is composed of cellulose and hemicellulose. The basic skeleton of plants is the second largest natural polymer material in nature after cellulose in quantity, and it is the only aromatic compound that can be obtained from renewable resources in industry. Lignin is widely used in building materials industry, petroleum industry, light industry and agriculture [1] , the pulp and paper industry separates about 140 million tons of cellulose from plants every year, and at the same time obtains about 50 million tons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08H7/00D06P1/46C04B24/12C04B35/632
Inventor 刘明华叶晓霞曾基挺刘以凡林春香
Owner FUZHOU UNIV