Method for Removing Fabric Softener Stains on Fabric
Release Time:
2010-11-04 13:40
Source:
China Laundry and Dyeing News
Generally, softeners are mostly cationic derivatives of ammonium fatty acids, amides, and alkyl imidazoline compounds, with some being nonionic derivatives of fatty acids and ethylene oxide. Most softener components contain saturated fatty acid chains, such as stearic acid (octadecanoic acid) and palmitic acid (hexadecanoic acid). These fatty acids have high melting points and strong hydrophobicity. If they dissolve poorly or are not well stirred before entering the machine cylinder, they are likely to form localized waxy patches and stains on the fabric. Silicone oil-based softeners are mostly emulsified dispersions. When high-temperature demulsification occurs, it can also cause severe oily stains.
If the patches are slight but widespread, saponification treatment can be done using caustic soda or soda ash in hot water, with appropriate addition of some emulsifiers for emulsification and dispersion. If the patches are heavier and more widely distributed, place absorbent cotton cloth or tissue paper under the stained area, then iron it to melt and transfer the fatty acid derivatives onto the underlying material.
Silicone oil stains are the most difficult to treat and cannot be removed by alkalis and emulsifiers alone. Generally, special "silicone oil cleaner" or "degreaser" purchased from silicone oil manufacturers is used for scrubbing. For larger areas, silicone oil cleaner at 10g/L with an appropriate amount of caustic soda can be used for boiling and processing.
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