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A high-efficiency darkening agent and its preparation and finishing application method

An application method and a technology of a deepening agent, which are applied in the field of high-efficiency deepening agent and its preparation and finishing application, can solve the problems of low deepening rate, no explanation of the deepening rate, and insufficient application effect, and achieve deep deepening. The effect is improved, the apparent dark color effect of the fabric is improved, and the color difference is small.

Active Publication Date: 2016-01-27
DYMATIC CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Pu Zongyao of Sichuan Institute of Textile Sciences and others found that anionic / cationic silicone emulsions are used to treat dyed fabrics together, that is, dyed fine-denier polyester fabrics are first impregnated with anionic or cationic silicone emulsions, and then impregnated with cationic or anionic silicone emulsions. Will greatly increase the apparent depth of dyed fine-denier polyester fabrics, but does not specify the specific deepening rate
[0017] The deepening agents reported above all have a key deficiency, that is, the deepening rate is not high: most of them are 20~30%, not more than 50%, and the application effect is not obvious enough.

Method used

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  • A high-efficiency darkening agent and its preparation and finishing application method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1) Preparation of pre-emulsion: 20g of methyl methacrylate and 1g of ethylene glycol diacrylate are mutually dissolved as the oil phase; 1g of cationic emulsifier 1831 and non-ionic emulsifier are added to O-15 (the ratio of the two is 2:1), 0.2g glacial acetic acid, dissolved in 31g deionized water as the water phase. Mix the water phase and the oil phase, and stir at 1500 rpm for 35 minutes at room temperature to obtain a pre-emulsion;

[0051] 2) Prepare the primer: add 0.35g of 1831 and Pingping O-15 (the ratio of the two is 1:1), 0.06g of azobisisobuimidazoline hydrochloride and 47g of deionized water, and stir to dissolve at room temperature Evenly. Put all the primers into a four-necked flask connected with a stirrer, thermometer, condenser and nitrogen tube;

[0052] 3) Polymerization reaction: Fill the flask with primer for 20 minutes with nitrogen to remove oxygen, while stirring, the water bath is heated up, and the temperature in the flask is stabilized at 75 ℃...

Embodiment 2

[0054] Step 1) According to Example 1, the crosslinking agent used is changed to 2g ethylene glycol dimethacrylate, and the deionized water is 29.8g;

[0055] Steps 2) and 3) are the same as in Example 1. The measured solid content of the deepening agent is 21.9%, and the monomer conversion rate is 99.6%.

Embodiment 3

[0057] 1) Preparation of pre-emulsion: 25g methyl methacrylate and 2.5g ethylene glycol dimethacrylate are mutually dissolved as the oil phase; 1.1g cationic emulsifier 1227 and nonionic emulsifier are added to O-15 (two The dosage ratio is 2:1), 0.25g glacial acetic acid, dissolved in 28g deionized water as the water phase. Mix the water phase and the oil phase, and stir at 1500 rpm for 35 minutes at room temperature to obtain a pre-emulsion;

[0058] 2) Prepare the primer: add 0.5g 1227 and flattened O-15 (the ratio of the two is 1:1), 0.09g azobisisobuimidazoline hydrochloride and 42.6g deionized water, stir at room temperature Dissolve uniformly. Put all the primers into a four-necked flask connected with a stirrer, thermometer, condenser and nitrogen tube;

[0059] 3) Polymerization reaction: Fill the flask with primer for 20 minutes with nitrogen to remove oxygen, while stirring, the water bath is heated up, and the temperature in the flask is stabilized at 75 ℃, and then t...

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Abstract

The invention discloses a high-efficiency darkening agent and its preparation and finishing application method, comprising 14-40% of methacrylate monomer, 0.5-6% of cross-linking agent, 0.05-2% of cationic emulsifier, 0.05~2% non-ionic emulsifier, 0.0015~0.4% water-soluble azo initiator, 0.005~0.5% glacial acetic acid and 60~85% deionized water. The invention is prepared by a cationic emulsion polymerization method, and the steps include: preparing a pre-emulsion liquid, preparing a primer, and pre-emulsion drop-adding polymerization reaction. The high-efficiency darkening agent and silicone emulsion adopt a two-step finishing application process. Using the high-efficiency darkening agent and its application method of the present invention, the darkening effect can greatly exceed the darkening rate of the prior art—up to or exceeding 80%, and the color difference is small, the hand feeling is improved, and the dry and wet rubbing fastness of the fabric and Soaping fastness has little effect.

Description

technical field [0001] The invention belongs to the field of textile dyeing and finishing auxiliaries, and in particular relates to a high-efficiency darkening agent and its preparation and finishing application method. Background technique [0002] Polyester is the world's largest and most widely used synthetic fiber variety. Due to the constraints of fiber dyeing balance and color fastness, plus polyester has a high refractive index and smooth surface, its dye depth is relatively poor. When dyeing polyester fiber, it is necessary to add more dyes to achieve the required surface color depth. Even if the amount of dyes is increased in actual production, sometimes it cannot meet customer requirements. For example, it is difficult to achieve the black color required by the Arab region. It is especially difficult for fine denier / ultra fine denier polyester with high surface light reflectance to dye dark colors. In addition, due to the increasing pressure of environmental prote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/263C08F220/14C08F222/14C08F220/18
Inventor 胡振锟郭玉良徐龙鹤刘军陈祖芬
Owner DYMATIC CHEM
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