Preparation method of leveling agent for one-bath dyeing of polyester-cotton fabric
A technology of one-bath dyeing and leveling agent, which is applied in the preparation of organic compounds, dyeing methods, preparation of aminohydroxy compounds, etc., can solve problems such as uneven dyeing, and achieve the effect of low foaming and good dyeing reproducibility
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[0030] Specific embodiment one:
[0031] A preparation method of a leveling agent for same-bath dyeing of polyester-cotton fabrics includes the following steps:
[0032] The first step, polyoxyethylene ether oleate hydroxypropyl dimethyl stearyl ammonium chloride (N-EO 8 )Synthesis:
[0033] (1) Synthesis of 3-chloro-2-hydroxypropyl dimethyl octadecyl ammonium chloride:
[0034]
[0035] At a constant temperature of 40°C, add 50.0 g of octadecyl tertiary amine and 100 g of distilled water to a 1000 mL four-necked flask with a condenser placed in a water bath, and slowly drop 36% HCl under stirring to control the pH to 2.5. After the dripping is completed, slowly add 44g of epichlorohydrin, continue stirring, and control the temperature at 80°C, after the dripping is completed, react at a constant temperature for 3 hours to make the epichlorohydrin react completely, and the reaction is complete;
[0036] (2) Synthesis of polyoxyethylene ether oleate hydroxypropyl dimethyl stearyl ammoni...
Example Embodiment
[0048] Specific embodiment two:
[0049] A preparation method of a leveling agent for same-bath dyeing of polyester-cotton fabrics includes the following steps:
[0050] The first step, polyoxyethylene ether oleate hydroxypropyl dimethyl stearyl ammonium chloride (N-EO 8 )Synthesis:
[0051] (1) Synthesis of 3-chloro-2-hydroxypropyl dimethyl octadecyl ammonium chloride:
[0052]
[0053] At a constant temperature of 40°C, add 50.0g of octadecyl tertiary amine and 100g of distilled water to a 1000mL four-necked flask with a condenser placed in a water bath, slowly drip 36% HCl under stirring, and control the pH to 3. After the dripping is completed, slowly add 44g of epichlorohydrin, continue stirring, and control the temperature at 85°C, after the dripping is completed, react at a constant temperature for 3.5h to make the epichlorohydrin react completely, and the reaction is over;
[0054] (2) Synthesis of polyoxyethylene ether oleate hydroxypropyl dimethyl stearyl ammonium chloride
[...
Example Embodiment
[0065] Specific embodiment three:
[0066] A preparation method of a leveling agent for same-bath dyeing of polyester-cotton fabrics includes the following steps:
[0067] The first step, polyoxyethylene ether oleate hydroxypropyl dimethyl stearyl ammonium chloride (N-EO 8 )Synthesis:
[0068] (1) Synthesis of 3-chloro-2-hydroxypropyl dimethyl octadecyl ammonium chloride:
[0069]
[0070] At a constant temperature of 40°C, add 50.0 g of octadecyl tertiary amine and 100 g of distilled water to a 1000 mL four-necked flask with a condenser placed in a water bath, and slowly drop 36% HCl under stirring to control the pH to 3. After the dripping is completed, slowly add 44g of epichlorohydrin, continue stirring, and control the temperature in the range of 83°C, after the dripping is completed, react at a constant temperature for 3.2h to make the epichlorohydrin react completely, and the reaction is complete;
[0071] (2) Synthesis of polyoxyethylene ether oleate hydroxypropyl dimethyl stea...
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