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Method for preparing reactive printing paste taking starch as raw material

A technology of reactive printing and starch, applied in the field of paste, can solve problems such as increasing equipment investment, and achieve the effects of improving reaction uniformity, high degree of substitution and good hand feeling

Inactive Publication Date: 2014-05-14
甘肃高歌伟业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, this process uses microwave radiation to assist the reaction, which not only increases equipment investment, but also has more difficulties in industrial applications.

Method used

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  • Method for preparing reactive printing paste taking starch as raw material
  • Method for preparing reactive printing paste taking starch as raw material
  • Method for preparing reactive printing paste taking starch as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]Slowly add 100kg of starch to the reactor at a stirring speed of 160r / min, then add 20kg of methanol aqueous solution with a mass ratio of 85% by spraying, continue stirring for 10min, then slowly add 50kg of 200-mesh powdered sodium hydroxide and 1kg of penetrant OEP- 70, react at 35°C for 15 minutes, then add 60kg of solid chloroacetic acid, and react at 60°C for 20 minutes. After the reaction, the reaction materials were transferred to a static reaction chamber, and reacted statically at 50° C. for 8 hours. After the static reaction is over, the reaction product is dried and pulverized to obtain the active printing paste.

Embodiment 2

[0056] Slowly add 100kg of starch to a 1000L reactor at a stirring speed of 200r / min, then add 45kg of 80% ethanol aqueous solution by spraying, continue stirring for 10min, then slowly add 60kg of 200-mesh powdered sodium hydroxide and 1.2kg of penetrant AEP, react at 25°C for 25min, then add 70kg of solid chloroacetic acid, react at 60°C for 20min. After the reaction, the reaction materials were transferred to the secondary reaction chamber, and reacted statically at 55° C. for 12 hours. After the secondary reaction, the reaction product is dried and pulverized to obtain the active printing paste.

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Abstract

The invention relates to paste used in reactive dye printing of textiles, in particular to a method for preparing reactive printing paste taking starch as a raw material. The process adopts the following steps of impregnating, alkalizing, etherifying, static etherifying and aftertreatment, wherein the static etherification reaction is performed during starch carboxymethylation reaction, so that the production energy consumption is effectively reduced, the time of contact between an etherifying agent and the starch is prolonged, the reaction efficiency is improved, and the prepared reactive printing paste has high degree of substitution and a good printing and dyeing effect; a penetrating agent is added during reaction, so that the damage of an alkalizer to a crystallization zone of starch granules is accelerated, chloroacetic acid is promoted to enter the crystallization zone of the starch during static etherification reaction, the reaction uniformity of the starch granules is improved, and a phenomenon that most of substituent groups are distributed on the surfaces of the starch granules to cause instability of the product performances is avoided.

Description

technical field [0001] The invention relates to a paste used in the printing process of textile reactive dyes, in particular to a method for preparing reactive printing paste with starch as a raw material. Background technique [0002] Direct printing with reactive dyes plays an extremely important role in printing products. At present, the most commonly used paste in reactive dye printing is sodium alginate. Water and washability, etc., the outline of the pattern after printing is clear. In recent years, the use of sodium alginate in the food industry has been increasing, resulting in tight supply and rising prices. For this reason, the development of carboxymethyl starch paste (CMS) has attracted people's attention. [0003] At present, most domestic carboxymethyl starch pastes are produced by water-soluble method and organic solvent method. The water-soluble method has serious side reactions, low reaction efficiency, high cost, high energy consumption, and poor product...

Claims

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Application Information

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IPC IPC(8): D06P1/48C08B31/12
Inventor 张慧瑛秦伟志郝军元
Owner 甘肃高歌伟业新材料科技有限公司
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