Environmentally friendly solvents and washing compositions containing them, washing devices

By adding fragrances with a specific log P value to the solvent and recovering water from the solvent in the washing device, the problems of solvent odor and fiber wrinkling are solved, and the environmentally friendly reuse of the solvent is achieved.

CN115702234BActive Publication Date: 2025-10-28LG HOUSEHOLD & HEALTH CARE LTD
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Patent Information

Application Number
CN202180041665.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-09-23
Filing Date
2021-05-07
Publication Date
2025-10-28
Estimated Expiration
2041-05-07

AI Technical Summary

Technical Problem

Existing solvents have odor problems and fiber wrinkle formation problems in fiber washing, and are difficult to recycle and reuse.

Method used

A fragrance having a specific log P value is combined with a solvent of Chemical Formula 1, and water in the solvent is recovered and removed through a specialized washing device to prevent decomposition.

Benefits of technology

It reduces solvent odor, prevents fiber wrinkling, and enables solvent recycling and reuse.

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Abstract

The washing composition according to the present invention is characterized by comprising a solvent selected from the group consisting of acetone glycerol and its derivatives, and a fragrance having a log P value of -1.0 to 4.5. The washing apparatus is characterized by comprising a washing section that receives the solvent and washes the contained fibers; a steam recovery section that condenses the gas phase discharged from the washing section and supplies it to a solvent recovery section; and a solvent recovery section that recovers the liquid phase discharged from the washing section and supplies it to a solvent supply section, wherein the solvent recovery section comprises: a filtration section that removes impurities from the solvent supplied from at least one of the steam recovery section and the washing section; and a solvent storage section that stores the solvent supplied from the filtration section.
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