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Inverse emulsion synthesis process of printing paint thickener

A technology for synthesizing thickeners and pigment printing, applied in coating, dyeing, textiles and papermaking, etc., can solve the problems of difficult promotion, long reaction time, large investment, etc., and achieve the goal of shortening reaction time and reducing operating costs. Effect

Active Publication Date: 2008-12-24
SINOPEC NANJING RES INST OF CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional production process is to use radiation polymerization to irradiate cobalt-60 for more than 10 hours to initiate polymerization to obtain this product. This process has disadvantages such as large investment, long reaction time, and difficulty in popularization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First, add 100g of acrylic acid to a 1500mL four-neck flask, add dropwise 240g of 18% sodium hydroxide solution, control the neutralization temperature below 40°C, and discharge the material after neutralization. Anhydride oleate and 8g polyoxyethylene sorbitan monooleate, 0.18g N, N'-methylene bisacrylamide, add dropwise acrylic acid neutralizing solution, after the dropwise addition, heat up to 35°C, add ammonium persulfate and 1.5 g of low sodium sulfite, the weight ratio of the two is 2:1, triggering the temperature rise, keeping the temperature for 2 hours, cooling down and discharging. The solid content of the product is 29%, and the thickening effect is 15 times.

Embodiment 2

[0016] First, add 120g of acrylic acid to a 1500mL four-neck flask, add dropwise 240g of 20% sodium hydroxide solution, control the neutralization temperature below 40°C, and discharge the material after neutralization. Anhydride oleate and 10g polyoxyethylene sorbitan monooleate, 1.6g N, N'-methylenebisacrylamide, add dropwise acrylic acid neutralizing solution, after the dropwise addition, raise the temperature to 40°C, add ammonium persulfate and Low sodium sulfite 0.72g, the weight ratio of the two is 2:1, triggering the temperature rise, heat preservation for 3h, cooling and discharging. The solid content of the product is 31%, and the thickening effect is 16 times

Embodiment 3

[0018] First, add 100g of acrylic acid to a 1500mL four-neck flask, add dropwise 240g of 20% sodium hydroxide solution, control the neutralization temperature below 40°C, and discharge the material after neutralization. Anhydride oleate and 9g polyoxyethylene sorbitan monooleate, 4.8g N, N'-methylene bisacrylamide, add dropwise acrylic acid neutralizing solution, after the dropwise addition, the temperature is raised to 45°C, and ammonium persulfate and 1.2 g of low sodium sulfite, the weight ratio of the two is 2:1, initiate polymerization, keep warm for 2 hours, cool down and discharge. The solid content of the product is 30%, and the thickening effect is 18 times

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Abstract

The process of synthesizing printing paint thickener includes the first adding acrylic acid solution in certain neutralization degree into kerosene containing certain amount of activator to form reverse emulsion, adding cross-linking agent N, N' -methylene bisacrylamide and / or N-hydroxymethyl acrylamide, and adding initiator redox system at low temperature to initiate reaction. The technological process has no need of removing reaction heat and reaction period of about 3 hr, and is simple and suitable for industrial production.

Description

Technical field: [0001] The invention belongs to the technical field of fine chemicals and relates to a method for synthesizing a pigment printing thickener. Background technique: [0002] At present, the thickener KG-401 used in pigment printing is a polymer of a certain molecular weight of acrylic acid and sodium acrylate, with a solid content of about 40%. It is mainly used in pigment printing instead of sodium alginate, especially suitable for use with disperse dyes. Thickener KG-401 quickly forms jelly in water to thicken. The traditional production process uses radiation polymerization to irradiate cobalt-60 for more than 10 hours to initiate polymerization to obtain this product. This process has disadvantages such as large investment, long reaction time, and difficulty in popularization. Invention content: [0003] The purpose of the invention is to provide a new method for synthesizing the pigment printing thickener, the solid content of the product is 26%-38%, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/06C08F2/22C09D7/12D06P1/52
Inventor 赵思远金汉强孙雪玲陈永平
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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