Water-based organic silicon color fixing agent polymer and preparation method thereof

A technology of silicone and color-fixing agent, applied in dyeing, textile and papermaking, etc., can solve the problems of destroying the hydrophilicity of the main chain structure, reducing the effect of waterproof and oil-repellent agent, and deteriorating the hydrophilicity of fabrics. and excellent hydrophilicity, preventing the deterioration of hydrophilicity, and improving the feel

Active Publication Date: 2021-03-19
TAICANG BAONI IND CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Generally, reactive dye fixing agents are cationic polymers, such as the Chinese patent "A reactive hydrophilic color fixing agent for fabrics and its preparation method" with application number 202010538652.6, which discloses a combination of dimethyl diallyl ammonium chloride, The linear cationic polymer prepared with diallylamine, acrylamide and dicyandiamide as the main raw materials can effectively improve the color fastness of reactive dyed or printed fabrics, and has good hydrophilicity, but the hand feel is not good Therefore, some scholars directly introduce the organic silicon structure into the color fixing agent through physical or chemical methods, so that the color fixing effect and soft hand feel can be improved at the same time. For example, the application number is 200410025014.5 The Chinese patent "cationic, reactive silicone color fixing agent and its preparation method", through the reaction of hydroxyl silicone oil, dimethyldichlorosilane, and organic amine, and then further quaternization, the silicone component is introduced into the color fixing agent In the main chain of the structure, color fixing and softness are integrated, but because the silicone component is introduced into the main chain of the color fixing agent molecule, the hydrophilicity of the main chain structure is destroyed, making the hydrophilicity of the fabric after it is fixed. become worse
[0004] In addition, in addition to the need for hand feeling of dyed textile fabrics, some dyed fabrics such as outdoor and military textiles need to have waterproof and oil-proof properties. Fastness and water and oil repellency, however, the use of traditional color fixing agents will seriously reduce the effect of water and oil repellent

Method used

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  • Water-based organic silicon color fixing agent polymer and preparation method thereof
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  • Water-based organic silicon color fixing agent polymer and preparation method thereof

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preparation example Construction

[0050] In a particularly preferred embodiment, the preparation method of the water-based silicone color fixing agent of the present invention comprises the following steps:

[0051] 1) 0°C, add unsaturated carboxylic acid represented by formula VII, carbonyldiimidazole, and aprotic polar organic solvent (such as DMF) into the reactor, react for 0.5-1h, and then add aminoalkyltrialkoxy represented by formula VIII base silane, heated to 20-30°C, and reacted for 10-12h to obtain the organosilicon monomer represented by formula VI;

[0052] 2) Add cationic surfactant and water to step 1), stir and emulsify at room temperature 800-1000r / min for 1-2h;

[0053] 3) Add the cationic monomer represented by formula IV, the allyl polyoxyethylene ether monomer represented by formula V and deionized water to step 2), raise the temperature to 70-80 ° C, drop a free radical initiator (such as persulfuric acid Ammonium aqueous solution), initiates polymerization reaction, and 1-3 hour dropwise ...

Embodiment 1

[0078] 1) Control the temperature at 0°C, add 3.2g cinnamic acid (0.022mol), 3.6g carbonyldiimidazole (0.022mol), and 20g DMF into a four-neck flask equipped with a stirrer and a thermometer, react for 0.6h, and then add 4.3 g aminopropyltrimethoxysilane (0.024mol), heated to 20-30°C, reacted for 11h;

[0079] 2) Add 3g of dodecyldimethylbenzyl ammonium chloride and 5g of water to step 1), and stir at room temperature at 800r / min for 1h;

[0080] 3) Add 45g of acryloyloxyethyltrimethylammonium chloride (80%; 0.186mol) and 8g of allyl polyoxyethylene ether (a=40; 0.0044mol) to step 2), purchased from Shanghai Taijie Chemical Co., Ltd. company) and 15g deionized water, after stirring for 10min at 75°C, start to add 1% ammonium persulfate aqueous solution dropwise, and the dropwise addition ends after 1.5h;

[0081] 4) Raise the temperature to 80° C. and keep it warm for 3 hours to prepare the water-based silicone color fixing agent 1. The weight-average molecular weight of the...

Embodiment 2

[0083] 1) Control the temperature at 0°C, add 2.6g of crotonic acid (0.03mol), 4.86g of carbonyldiimidazole (0.03mol), and 20g of DMF into a four-neck flask equipped with a stirrer and a thermometer, react for 1 hour, and then add 7.08g Aminopropyltriethoxysilane (0.032mol), heated to 20-30°C, reacted for 10-12h;

[0084] 2) Add 3g of dodecyldimethylbenzyl ammonium chloride and 5g of water to step 1), and stir at room temperature at 800r / min for 1h;

[0085] 3) Add 80g of methacryloxyethyl dimethyl benzyl ammonium chloride (60%; 0.17mol) and 6.9g of allyl polyoxyethylene ether (a=30; 0.005mol) to step 2), purchased from Shanghai Taijie Chemical Co., Ltd.) and 5g deionized water, after stirring at 80°C for 10min, start to add 1% aqueous solution of ammonium persulfate dropwise, and the dropwise addition ends after 2h;

[0086] 4) Raise the temperature to 85° C. and keep it warm for 2 hours to prepare the water-based silicone color fixing agent 2. The weight-average molecular ...

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Abstract

The invention discloses a water-based organic silicon color fixing agent polymer and a preparation method thereof. The water-based organic silicon color fixing agent polymer comprises a copolymerization unit represented by an x mol formula I, a copolymerization unit represented by a y mol formula II and a copolymerization unit represented by a z mol formula III. The water-based organic silicon color fixing agent polymer disclosed by the invention is excellent in soaping fastness, water soaking fastness and rubbing fastness, very excellent in hand feeling and hydrophilicity, and extremely smallin influence on a water-proof and oil-proof agent.

Description

technical field [0001] The invention relates to a water-based organic silicon color-fixing agent polymer and a preparation method thereof, in particular to a water-based organic silicon color-fixing agent polymer for reactive dyes and a preparation method thereof. Background technique [0002] Reactive dyes are widely used in the dyeing of cotton fabrics because of their advantages such as complete color spectrum, bright color and low price. Reactive dyes can form covalent bonds with fibers during dyeing, but unreacted dyes and hydrolyzed dyes will adhere to the surface of the fabric to form floating colors during dyeing. At the same time, reactive dyes that have reacted with the fabric will also hydrolyze and break bonds, which is difficult to completely Therefore, it is often necessary to use a reactive dye fixing agent for color fixing. [0003] Generally, reactive dye fixing agents are cationic polymers, such as the Chinese patent "A reactive hydrophilic color fixing ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F230/08C08F220/34D06P5/08D06P1/38D06P3/66
CPCC08F283/065D06P5/08D06P1/38D06P3/66C08F230/085C08F220/34
Inventor 党婉蓉李正雄
Owner TAICANG BAONI IND CO LTD
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