Decolorizing composition, decolorizing method, and decolorizing apparatus

Abstract

A medium made of dyed fabric can be decolorized without the need for an absorbent material such as cloth. [Solution] The decolorizing composition is used to decolorize a textile media dyed with a dyeing material containing a sublimable dye. The decolorizing composition contains at least one of ether bonds and ester bonds in its molecular structure and contains as an active ingredient a compound with a boiling point higher than the fiber opening temperature at which the molecular chains or intermolecular forces of the fiber loosen.

Claims

1. A decolorizing composition used for decolorizing textile media dyed with a dyeing material containing a sublimable dye, A decolorizing composition comprising, as an active ingredient, a compound having a boiling point higher than the fiber opening temperature at which the attractive forces between the molecular chains or intermolecules of the fiber loosen, and containing at least one of ether bonds and ester bonds in its molecular structure.

2. In claim 1, The aforementioned compound, A linear compound having the ester bond and the ether bond, The linear compound is a decolorizing composition having at least one ether bond on one side as seen from the ester bond.

3. In claim 1, The aforementioned compound, The linear compound having multiple ether bonds, The aforementioned linear compound is an alcohol-based compound having a hydroxyl group at one end, in a decolorizing composition.

4. A decolorizing composition used for decolorizing textile media dyed with a dyeing material containing a sublimable dye, A decolorizing composition containing at least one compound selected from ethyl acetate diyukisol, 2-(2-ethoxyethoxy)ethanol, dimethyl succinate, dimethyl glutarate, dimethyl adipate, benzyl benzoate, and ethylene carbonate as an active ingredient.

5. A method for decolorizing a textile media dyed with a dyeing material containing a sublimable dye, The decolorizing composition used for decolorizing the aforementioned fibrous media contains at least one of ether bonds and ester bonds in its molecular structure, and contains as an active ingredient a compound with a boiling point higher than the fiber opening temperature at which the attractive forces between the molecular chains or intermolecules of the fiber loosen. A decolorization method comprising immersing the fibrous media in the decolorization composition and heating it at a temperature higher than the fiber opening temperature, or immersing it in the decolorization composition heated at a temperature higher than the fiber opening temperature.

6. An apparatus for decolorizing a textile media dyed with a dyeing material containing a sublimable dye, A decolorizing composition used for decolorizing the aforementioned fibrous media, and a container for containing the aforementioned fibrous media, A decolorizing apparatus comprising heating means for heating the decolorizing composition to a temperature higher than the fiber opening temperature at which the molecular chains or intermolecular forces of the fibers are relaxed.

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