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A kind of hydrophilic strong alkali 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, general color fixing effect, and decline of 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: 2021-12-07
TAICANG BAONI IND CO LTD
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  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of hydrophilic strong alkali resistant color fixing agent and preparation method thereof
  • A kind of hydrophilic strong alkali resistant color fixing agent and preparation method thereof
  • A kind of hydrophilic strong alkali 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 kind of preparation method of above-mentioned hydrophilic strong alkali resistant color fixing agent, this method comprises the following steps:

[0055] 1) The (meth)acryloxy quaternary ammonium salt cationic monomer represented by a molar formula (V), the amino-containing vinyl ether monomer represented by b molar formula (VI), and the c molar formula (VII) represented The enamine monomer, the unsaturated carboxylic acid monomer represented by d mole formula (VIII) and water (preferably deionized water) are added into the reactor for stirring. Stirring is preferably carried out at 40-80°C for 10-20 minutes. In the above monomer mixture, preferably based on the total weight of the monomers, 10-25% by mass of an acid agent and 20-60% by mass of water are optionally added. The above-mentioned acid agent is preferably a strong acid, more preferably an inorganic strong acid, such as hydro...

Embodiment 1

[0079] Add 30g of acryloyloxyethyltrimethylammonium chloride (80%; M=193.67; n=0.1239mol), 8g of 2-(diethyl Amine) ethanol vinyl ether (M=143; n=0.05594mol), 4.6g N-ethylmethylacrylamine (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°C for 10min, start to add 1% ammonium persulfate aqueous solution dropwise, after 1.5h dropwise, heat up to 80°C , keep warm for 2.5h, then lower the temperature to 40°C, adjust the pH value to 7-8 with NaOH, add 10g of epichlorohydrin (M=92.52; n=0.1081mol) dropwise, finish adding dropwise for 1.5h, and keep warm for 3h. Obtain hydrophilic and alkali-resistant color fixing agent 1. The application effect is shown in Table 1 and Table 2. The weight-average molecular weight of the hydrophilic and alkali-resistant color fixing agent 1 is 35,000.

Embodiment 2

[0081] Add 37g of methacryloyloxyethyltrimethylammonium chloride (75%; M=207.7; n=0.1336mol), 10g of 2-(di Ethylamine) ethanol vinyl ether (M=143; n=0.06993mol), 5g N-methyl-2-methylallylamine (M=85.15; n=0.05872mol), 8g crotonic acid (M= 86.09; n=0.09293mol), 12g hydrochloric acid (37%; M=36.46; n=0.1218mol) and 16g deionized water, after stirring at 70°C for 10min, start to add 1% ammonium persulfate aqueous solution dropwise, and the dropwise addition is completed after 1h. Raise the temperature to 75°C, keep it warm for 3h, then lower the temperature to 50°C, adjust the pH value to 7-8 with NaOH, add 12g of epichlorohydrin (M=92.52; n=0.1297mol) dropwise, finish adding dropwise for 2h, keep warm for 2.5h . Obtain hydrophilic strong alkali resistant color fixing agent 2. The application effect is shown in Table 1 and Table 2. The weight-average molecular weight of the hydrophilic and alkali-resistant color fixing agent 2 is 67,000.

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Abstract

The invention discloses a copolymerization unit comprising a molar formula (I), b molar formula (II) copolymerization unit, c molar formula (III) copolymerization unit and d molar formula (IV) copolymerization unit Hydrophilic strong alkali resistant color fixing agent and preparation method thereof. The hydrophilic and alkali-resistant color fixing agent of the invention has excellent color fixing effect and alkali resistance, good hydrophilicity and small fabric color.

Description

technical field [0001] The invention relates to a color-fixing agent and a preparation method thereof, in particular to a hydrophilic alkali-resistant color-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 increasingly 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 and has a silky luster, but also has stable dimensions, crispness, and good wrinkle resistance. It is widely used in products such as T-shirts, moisture-wicking fabrics, and high-end shirts. [0003] The conventional mercerizing process of cotton knitted fabrics is carried out before dyeing, but in the subsequent dyeing and finishing process, the mercerizing effect of cotton fabri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
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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