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Hydrophilic strong base resistant color fixing agent and preparation method thereof

A technology of strong alkali resistance and color-fixing agent, which is applied in dyeing, textiles and papermaking, etc. It can solve the problems of large influence of fabric color change, decline of color-fixing effect, and general color-fixing effect, so as to improve the color fastness of fabrics, Reduce the generation of floating color, color fixing effect and excellent effect of alkali resistance

Active Publication Date: 2019-01-11
TAICANG BAONI IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the Chinese patent whose application number is CN201711160212.6 discloses a preparation method of a formaldehyde-free color fixing agent, using allyl glycidyl ether, the intermediate of ethylenediamine reaction, dimethyl diallyl ammonium chloride , the polycationic reactive color-fixing agent prepared under the action of the initiator has good color-fixing effect, and the soaping fastness reaches 4-5 grades, but it is not resistant to alkali, and the color-fixing effect is greatly reduced under the condition of concentrated alkali; Another example is the Chinese patent whose application number is CN201711211179.5, which discloses a preparation method of a formaldehyde-free color-fixing agent, using polyamine reactions prepared by dimethylamine, epichlorohydrin, diethylenetriamine and dicyandiamide, etc. Non-toxic color fixing agent, simple process, convenient operation, good alkali resistance, but the color fixing effect is average, and because dicyandiamide is used as one of the raw materials, the color fixing agent has a great influence on the color change of the fabric
[0005] Most of the fixing agents on the market are of the above types. In the traditional dyeing of cotton fabrics and the dyeing process of ordinary mercerized cotton fabrics after mercerizing, traditional color fixing agents can effectively improve the color fastness of fabrics after screening, but In the more demanding process of dyeing first and then mercerizing, the color-fixing agents on the market either have poor color-fixing effects or poor alkali resistance. The fastness of high-grade mercerized cotton fabrics developed by post-mercerizing technology is of great practical significance to develop an alkali-resistant color-fixing agent for cotton with good color-fixing effect

Method used

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  • Hydrophilic strong base resistant color fixing agent and preparation method thereof
  • Hydrophilic strong base resistant color fixing agent and preparation method thereof
  • Hydrophilic strong base resistant color fixing agent and preparation method thereof

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preparation example Construction

[0054] In a preferred embodiment of the present invention, the present invention provides a preparation method of the above-mentioned hydrophilic and strong alkali-resistant fixing agent, the method comprising the following steps:

[0055] 1) A (meth)acryloyloxy quaternary ammonium salt cationic monomer represented by a mole of formula (V), b mole of vinyl ether monomer containing an amine group represented by formula (VI), and c mole of formula (VII) The enamine monomer, d mole of the unsaturated carboxylic acid monomer represented by formula (VIII), and water (preferably deionized water) are added to the reactor and stirred. It is preferable to stir at 40-80°C for 10-20 minutes. In the above-mentioned monomer mixture, it is preferable to optionally add 10-25% by mass of an acid agent and 20-60% by mass of water based on the total weight of the monomers. The aforementioned acid agent is preferably a strong acid, more preferably a strong inorganic acid such as hydrochloric acid ...

Embodiment 1

[0079] In a four-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, 30g of acryloyloxyethyl trimethylammonium chloride (80%; M=193.67; n=0.1239mol), 8g 2-(diethyl) Amine) ethanol vinyl ether (M=143; n=0.05594mol), 4.6g N-ethylmethacrylamine (M=99.17; n=0.04638mol), 10g crotonic acid (M=86.09; n=0.1162mol) ), 11g hydrochloric acid (37%; M=36.46; n=0.1116mol) and 26.4g deionized water, after stirring at 60℃ for 10min, start dripping 1% ammonium persulfate aqueous solution, 1.5h dripping is over, the temperature is raised to 80℃ , Keep for 2.5h, then lower the temperature to 40℃, adjust the pH to 7-8 with NaOH, add 10g epichlorohydrin (M=92.52; n=0.1081mol) dropwise, the dripping ends for 1.5h, keep for 3h. Get hydrophilic and alkali-resistant fixing agent 1. The application effect is shown in Table 1 and Table 2. The weight average molecular weight of the hydrophilic strong alkali-resistant fixing agent 1 is 35,000.

Embodiment 2

[0081] In a four-necked flask equipped with a stirrer, a thermometer and a reflux condenser, 37g methacryloxyethyl trimethylammonium chloride (75%; M=207.7; n=0.1336mol), 10g 2-(two Ethylamine) ethanol vinyl ether (M=143; n=0.6993mol), 5g N-methyl-2-methylallylamine (M=85.15; n=0.05872mol), 8g crotonic acid (M= 86.09; n = 0.09293 mol), 12 g hydrochloric acid (37%; M = 36.46; n = 0.1218 mol), and 16 g deionized water, stirred at 70°C for 10 minutes, and then started to add 1% ammonium persulfate aqueous solution, and the 1 hour addition was over. Warm up to 75°C, keep it for 3h, then lower the temperature to 50°C, adjust the pH to 7-8 with NaOH, add 12g epichlorohydrin (M=92.52; n=0.1297mol) dropwise, finish the 2h dropping, keep it for 2.5h . Get hydrophilic and alkali-resistant fixing agent 2. The application effect is shown in Table 1 and Table 2. The weight average molecular weight of the hydrophilic strong alkali-resistant color fixing agent 2 is 67,000.

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Abstract

The invention discloses a hydrophilic strong base resistant color fixing agent which contains a copolymer unit expressed by a mole formula (I), a copolymer unit expressed by b mole formula (II), a copolymer unit expressed by c mole formula (III) and a copolymer unit expressed by d mole formula (IV), and a preparation method thereof. The hydrophilic strong base resistant color fixing agent disclosed by the invention is excellent in color fixing effect and alkali resistance, good in hydrophilia and small in textile color change.

Description

Technical field [0001] The invention relates to a fixing agent and a preparation method thereof, in particular to a hydrophilic strong alkali-resistant fixing agent and a preparation method thereof Background technique [0002] Cotton fabrics are widely loved by consumers because of their moisture absorption and breathability. After continuous development, the quality of cotton fabrics is more and more catering to people's increasing wearing needs. Among them, mercerized cotton fabrics are one of the most popular products among consumers. Mercerized cotton fabric is not only comfortable to wear, has a silk-like luster, but also has stable dimensions, crispness and good wrinkle resistance. It is widely used in T-shirts, moisture-wicking fabrics and high-end shirts. [0003] The conventional mercerizing process of cotton knitted fabrics is performed before dyeing, but in the subsequent dyeing and finishing processing, the mercerizing effect of cotton fabrics is significantly affected...

Claims

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Application Information

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IPC IPC(8): D06P5/08C08F8/24C08F220/34C08F216/14C08F226/02C08F220/06
CPCC08F8/24C08F220/34D06P5/08C08F216/1458C08F226/02C08F220/06
Inventor 党婉蓉李正雄
Owner TAICANG BAONI IND CO LTD
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