A kind of modified carboxymethyl starch polymer and its preparation method and application

A technology of carboxymethyl starch and polymer, which is applied in the field of modified carboxymethyl starch polymer and its preparation, can solve the problems of unsatisfactory color fastness, low wet fastness and unsatisfactory effect, etc. Wet fastness, improvement of dry rubbing fastness, little effect

Active Publication Date: 2021-08-31
FUJIAN QINGYUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of dye molecule contains reactive groups, which are easy to react with fibers, and the two are combined with covalent bonds to improve the fastness to washing and rubbing, but the color fastness is not ideal
During the dyeing process, especially when dyeing dark colors, there will often be a large amount of unfixed reactive dyes on the dyed fabric due to the high concentration of the dye. These unfixed dyes are difficult to wash off from the dyed fabric. This part The dye will fade during the washing process; at the same time, the chemical bonds formed between some active groups and fibers are easy to desalinate and hydrolyze, resulting in low wet fastness
Researchers have tried various methods to improve the rubbing fastnes

Method used

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  • A kind of modified carboxymethyl starch polymer and its preparation method and application

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Example Embodiment

[0025] Example 1

[0026] A method for preparing a polymer modified carboxymethyl starch, comprising the steps of:

[0027] a, material preparation: mass parts basis, 34 parts of carboxymethyl starch, hexanediol divinyl ether 1.5 parts, 1.3 parts of vinyl isocyanate, 2.6 parts of epichlorohydrin, 0.22 parts of ammonium persulfate, 61.86 parts demineralized water ;

[0028] b, carboxymethyl starch modification in the low-temperature low-temperature plasma reactor 22min, temperature was set at -8 deg.] C;

[0029] C, added to a low temperature through carboxymethyl starch-modified hexanediol divinyl ether 1.5 parts, 1.3 parts of vinyl isocyanate, 52.08 parts of demineralized water, heating was started with stirring and heating;

[0030] d, when the temperature was raised to 112 deg.] C, dropwise addition of a concentration of 2.2% by mass initiator solution, the initiator solution is prepared from 0.22 parts of ammonium persulfate and from the rest of desalted water was added dropwi...

Example Embodiment

[0032] Example 2

[0033] A method for preparing a polymer modified carboxymethyl starch, comprising the steps of:

[0034] a, material preparation: mass parts basis, 36 parts of carboxymethyl starch, 2 parts of neopentyl glycol divinyl ether, 2.2 parts of vinyl isocyanate, 3.4 parts of epichlorohydrin, 0.34 parts of ammonium persulfate, demineralized water 60.3 share;

[0035] b, carboxymethyl starch modification in the low-temperature low-temperature plasma reactor 22min, temperature was set at -8 deg.] C;

[0036] C, to a low temperature through carboxymethyl starch modified was added neopentyl glycol divinyl ether, 2 parts, 2.2 parts of vinyl isocyanate, 50.64 parts of demineralized water, heating was started with stirring and heating;

[0037] d, when the temperature was raised to 117 deg.] C, dropwise addition of 3.4% by mass concentration of initiator solution, the initiator solution is prepared from 0.34 parts of ammonium persulfate and from the rest of desalted water was ...

Example Embodiment

[0039] Example 3

[0040] A method for preparing a polymer modified carboxymethyl starch, comprising the steps of:

[0041] a, preparation of raw materials: parts by mass basis, 37.2 parts of carboxymethyl starch, tetraethylene glycol divinyl ether 2.2 parts, 2.3 parts of vinyl isocyanate, 4.1 parts of epichlorohydrin, 0.48 parts of sodium persulfate, 58.32 demineralized water share;

[0042] b, carboxymethyl starch modification in the low-temperature low-temperature plasma reactor 22min, temperature was set at -8 deg.] C;

[0043] C, was added to the carboxymethyl starch modified through the cryogenic tetraethylene glycol divinyl ether 2.2 parts, 2.3 parts of vinyl isocyanate, 48.8 parts of demineralized water, heating was started with stirring and heating;

[0044] d, when the temperature was raised to 119 deg.] C, dropwise addition of a concentration of 4.8% by mass initiator solution, the initiator solution is prepared from 0.48 parts of sodium persulfate and from the rest of ...

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Abstract

The invention discloses a modified carboxymethyl starch polymer and its preparation method and application. The modified carboxymethyl starch polymer is prepared from the following raw material components in parts by mass: carboxymethyl starch 33~ 42 parts, 1 to 5 parts of modifier, 1 to 5 parts of vinyl isocyanate, 2 to 6 parts of epichlorohydrin, 0.2 to 0.8 parts of initiator, 48 to 62 parts of desalinated water, which are used as dry and wet rubbing fastness improvement When the agent is used, it has the advantages of high color fastness, can improve the dry and wet fastness, and the color fastness to washing with desalinated water, has little effect on the shade of sensitive colors, and has the advantages of less dosage.

Description

technical field [0001] The invention belongs to the field of textile dyeing and finishing auxiliaries, in particular to a modified carboxymethyl starch polymer and its preparation method and application. Background technique [0002] Reactive dyes, also known as reactive dyes, are a class of dyes that chemically react with fibers during dyeing. Because of its own characteristics, such as low price, complete color spectrum and bright color, it is widely used in cotton fabric dyeing. Such dye molecules contain reactive groups, which are easy to react with fibers, and the two are combined with covalent bonds to improve the fastness to washing and rubbing, but the color fastness is not ideal. During the dyeing process, especially when dyeing dark colors, there will often be a large amount of unfixed reactive dyes on the dyed fabric due to the high concentration of the dye. These unfixed dyes are difficult to wash off from the dyed fabric. This part The dye will fade during the...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F226/06C08F216/12D06P5/08D06P1/38D06P3/66D06M101/06
CPCC08F251/00D06P1/38D06P3/66D06P5/08C08F226/06C08F216/125
Inventor 刘剑锋陈珍喜郑文国王伟锋苏千德
Owner FUJIAN QINGYUAN TECH
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