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Method for removing fluorine-free water-proofing agent on textiles

A fluorine-free waterproofing agent and textile technology, which is applied in textiles and papermaking, dry-cleaning fiber products, and liquid-repellent fibers, etc. It can solve the problems of not seeing the removal of waterproofing agent, etc., and achieve the effect of low cost and reasonable processing technology

Inactive Publication Date: 2020-07-31
DYMATIC CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is no very effective method for removing water repellent at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Remove fluorine-free water repellent from cotton fabrics. Removal agent mass ratio: Silicone removal agent DM-1741: 10.0 g / L, degreasing agent DM-1141: 2.0 g / L, Xiu Sering DM-1750: 4.0 g / L, caustic soda: 6.0 g / L.

[0019] According to the bath ratio of 1.0:10.0, the working solution was prepared; the fabric was added from the temperature of 60.0 °C, and the temperature was raised to 115 °C at 2 °C / min, then kept for 90 min, cooled to 80 °C, drained, and washed with hot water at 80 °C. Twice, 15 min each, acid neutralization (HA C 1 g / L for 5 min at room temperature), and then washed with 80 ℃ hot water once.

Embodiment 2

[0021] Remove fluorine-free water repellent from nylon fabrics. The mass ratio of remover: Silicone removal DM-1741: 12.0 g / L, degreasing agent DM-1141: 2.0 g / L, Xiusering DM-1750: 4.0 g / L, caustic soda: 6.0 g / L.

[0022] According to the bath ratio of 1.0∶15.0, the working solution was prepared; the fabric was added from the temperature of 60.0 °C, and the temperature was raised to 100 °C at 2 °C / min, then kept for 90 min, cooled to 80 °C, drained, and washed with hot water at 80 °C. Once, 10 min each time, acid neutralization (HA C 1 g / L for 5 min at room temperature), and then washed with 80 ℃ hot water once.

Embodiment 3

[0024] Removes fluorine-free water repellent from polyester fabrics. The mass ratio of remover: Silicone removal DM-1741: 12.0 g / L, degreasing agent DM-1141: 2.0 g / L, Xiusering DM-1750: 4.0 g / L, caustic soda: 6.0 g / L.

[0025] According to the bath ratio of 1.0∶10.0, the working solution was prepared; the fabric was added at a temperature of 60.0 °C, and the temperature was raised to 115 °C at 2 °C / min, then kept for 90 min, cooled to 80 °C, drained, and washed with hot water at 85 °C. Once, 10 min each time, acid neutralization (HA C 1 g / L for 5 min at room temperature), and then washed with 80 ℃ hot water once.

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PUM

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Abstract

The invention provides a method for removing a fluorine-free water-proofing agent on textiles. The method for removing the fluorine-free water-proofing agent on the textiles comprises the steps that (S1), remover is prepared by mass ratio: 8.0-12.0 g / L of a silicon removal agent DM-1741, 1.0-3.0 g / L of oil remover DM-1141, 2.0-4.0 g / L of a color repairing agent DM-1750 and 5.0-7.0 g / L of caustic soda; (S2), according to the weight of fabric, the remover prepares working fluid at a bath ratio of 1.0 to (10.0 to 15.0); and (S3), the fabric is added to the working fluid obtained from the S2 at 60.0 DEG C temperature, heating is carried out to 100-115 DEG C by 2-3 DEG C / min, then heat is preserved for 60-120 min, temperature is reduced to 80 DEG C, draining is carried out, washing is carried out with 80 DEG C hot water, acid neutralization is carried out, and washing is carried out with the 80 DEG C hot water. The method for removing the fluorine-free water-proofing agent on the textiles removes the water-proofing agent from the fluorine-free water-proofing agent finishing textiles, and a feasible scheme is provided for the repair of fabric defects and spots in the production of the water-proofing agent.

Description

technical field [0001] The present invention relates to a method for removing fluorine-free water repellent from textiles. Background technique [0002] After the EU banned the use of fluorine-containing water- and oil-repellent finishing agents containing PFOS or its derivatives, fluorine-free water repellents developed rapidly. The earliest application history belongs to alkane long-chain water repellents, such as metal soaps, paraffins, etc. It is difficult to meet the requirements of current waterproof textiles, and fluorine-free waterproofing agents for hydrocarbon resins have appeared one after another. There are still some problems in the use of this type of waterproofing agent, such as sticking to the roller and demulsification, resulting in stains, streaks or large discoloration on the finishing cloth. Once a problem occurs, it cannot be directly repaired due to the water repellency of the fabric. Therefore, it is necessary to remove the water repellent. It is very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/00D06M15/00D06M11/38D06L1/16D06M101/06
CPCD06M13/00D06M15/00D06M11/38D06L1/16D06M2101/06D06M2200/12
Inventor 卢霜陈晓妹梁永标邓东海
Owner DYMATIC CHEM