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Relative molecular mass controlled polyquaternium color fixing agent and synthesizing method thereof

A relative molecular weight, polyquaternium technology, applied in dyeing, textiles and papermaking, etc., can solve the problem of limited reference value, no product yield and color fixing performance stability, no PDMDAAC color fixing agent dry friction and other problems. Research on fastness issues such as wet rubbing, etc., to achieve good color fixing performance, high product yield, and good application prospects.

Inactive Publication Date: 2010-11-24
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (1) Documents 1, 2, and 3 cannot explain the synthesis and preparation process conditions for preparing PDMDAAC color-fixing agent, thereby being unable to evaluate its superiority in synthesis technology; meanwhile, its focus is on the dye-fixing time of PDMDAAC color-fixing agent on cotton fabrics However, there is no research on the fastness to dry rubbing and wet rubbing after the PDMDAAC color fixing agent is fixed, which is currently more concerned, so the reference value of its current application is limited.
[0012] (2) Document 4 reports a class of preparation method of PDMDAAC color fixing agent, but its preparation reaction needs to be carried out under the conditions of using composite initiator and higher reaction temperature (80°C), thus affecting the production technology and The industrialization cost of the production process; at the same time, it does not involve key issues such as product yield, stability of color fixing performance and relative molecular mass (intrinsic viscosity) control; in addition, the rubbing fastness of the obtained product, especially the wet rubbing fastness degree only 3

Method used

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  • Relative molecular mass controlled polyquaternium color fixing agent and synthesizing method thereof
  • Relative molecular mass controlled polyquaternium color fixing agent and synthesizing method thereof
  • Relative molecular mass controlled polyquaternium color fixing agent and synthesizing method thereof

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preparation example Construction

[0022] The relative molecular mass of the present invention is controlled polyquaternary ammonium salt color-fixing agent PDMDAAC and its synthetic method, and the steps are as follows:

[0023] In the first step, the metered industrial DMDAAC monomer is added into the reactor and prepared into a reaction solution whose mass fraction is 35%-65% of the initial monomer solution.

[0024] In the second step, the initiator ammonium persulfate APS accounting for 1%-4% of the mass of the reaction monomer DMDAAC is weighed and prepared into a 0.05g / ml-0.35g / ml initiator solution, and then added to the constant pressure funnel.

[0025] In the third step, the temperature of the reaction solution is raised to 60±5°C, and the ammonium persulfate (APS) initiator solution is evenly added dropwise from the constant pressure funnel under stirring, and the dropping time is 2.0-3.0h. Continue the reaction at ±5°C for 3.0-4.0h (the best total reaction time is 6h at 60±5°C).

[0026] The fourt...

Embodiment 1

[0033] The present invention is designed to effectively control the relative molecular mass of PDMDAAC within a specific viscosity range by synergistically controlling the reaction monomer concentration (initial monomer mass fraction) and the amount of initiator and other factors to obtain a corresponding high-efficiency color-fixing agent product. The specific steps as follows:

[0034] In the first step, take metered industrial DMDAAC monomer and add it into a clean four-necked flask and prepare a reaction solution with an initial monomer mass fraction of 35%;

[0035] In the second step, open the nitrogen valve, remove the air in the reaction bottle with a larger volume, and stop nitrogen after 30 minutes;

[0036] In the third step, take by weighing the initiator ammonium persulfate APS accounting for 4% of the mass of the reaction monomer DMDAAC and add it to the constant pressure funnel after being made into an initiator solution of 0.35g / ml;

[0037] In the fourth step...

Embodiment 2

[0041] The present invention is designed to effectively control the relative molecular mass of PDMDAAC within a specific viscosity range by synergistically controlling the reaction monomer concentration (initial monomer mass fraction) and the amount of initiator and other factors to obtain a corresponding high-efficiency color-fixing agent product. The specific steps as follows:

[0042] In the first step, take metered industrial DMDAAC monomer and add it into a clean four-neck flask to form a reaction solution with an initial monomer mass fraction of 50%;

[0043] In the second step, open the nitrogen valve, remove the air in the reaction bottle with a larger volume, and stop nitrogen after 30 minutes;

[0044] In the third step, take by weighing the initiator ammonium persulfate APS accounting for 4% of the mass of the reaction monomer DMDAAC and add it to the constant pressure funnel after being made into an initiator solution of 0.2g / ml;

[0045] In the fourth step, the t...

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Abstract

The invention discloses a relative molecular mass controlled polyquaternium color fixing agent and a synthesizing method thereof. The method comprises the following steps: adding weighed industrial DMDAAC monomer into a reactor to prepare a reacting solution with the initial monomer solution mass fraction of between 35 percent and 65 percent; weighing initiator ammonium persulfate APS to prepare an initiator solution, and adding the mixture into a constant pressure funnel; heating the reacting solution, uniformly dropwise adding the ammonium persulfate initiator solution into the constant pressure funnel in a stirring state, preserving the temperature to keep on reacting after dropwise adding of the initiator is completed; and further heating and curing the reacting solution after temperature preservation so as to further improve the monomer conversion rate to obtain the relative molecular mass controlled polyquaternium color fixing agent PDMDAAC. The product has a specific range of characteristic viscosity values of between 0.25dL / g and 0.45dL / g, and has excellent color fixing performance; and the reacting monomer conversion rate is over 96.0 percent with high yield.

Description

technical field [0001] The invention belongs to polyquaternium salt cationic color-fixing agent and its synthesis technology, in particular to polydimethyldiallyl ammonium chloride (PDMDAAC) and its synthesis method. Background technique [0002] Fabric fibers include natural fibers (cotton, hemp, wool, silk, etc.) and chemical fibers (regenerated fibers, synthetic fibers, etc.). With the enhancement of people's environmental awareness, environmentally friendly natural fibers are becoming more and more popular. Among them, cotton fiber plays an important role on the big stage of fabric fiber because of its good hygroscopicity, warmth retention and soft feel in terms of wearing performance, as well as the advantages of cleaning, health care and degradable recycling performance; The main structure of cotton fiber is cellulose, which is composed of cellulose macromolecules, and the molecules are connected to each other by molecular attraction, hydrogen bond, chemical bond and ...

Claims

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Application Information

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IPC IPC(8): C08F126/02C08F2/00D06P5/08
Inventor 张跃军余义开曲文超解春萍
Owner NANJING UNIV OF SCI & TECH
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