Abstract

A process is shown for providing a solid fraction from a textile product including a natural fiber, a synthetic fiber, or both. The process involves the treatment of the textile product with a water-soluble salt of dithionous acid followed by a treatment of an aprotic solvent, such as dimethyl sulfoxide.

IPC Classes  ?

• D06L 4/75 - Multi-step processes combined with cleaning or washing
• D06L 4/13 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using agents which develop oxygen using inorganic agents
• D06L 4/15 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using agents which develop oxygen using organic agents

Abstract

The present invention relates to an apparatus for treating a fibre material, such as textiles. The fibre material is fed to a reactor volume having an upper and a lower end, and the reactor volume is limited by a first filter in a lower end of the reactor volume and a second filter in the upper end of the reactor volume. A flow of solvent is led through the reactor volume entering the reactor volume through the first filter and exiting the reactor volume through the second filter.

IPC Classes  ?

• D06B 5/14 - Forcing liquids, gases, or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating through materials of definite length through fibres, slivers, or rovings
• D06B 9/06 - Solvent-treatment of textile materials with recovery of the solvent
• D06P 5/15 - Locally discharging the dyes
• D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation

Abstract

The present invention relates to a process for providing a solid fraction from a textile product comprising a natural fibre and/or a synthetic fibre. The process involves the treatment of the textile product with a water-soluble salt of dithionous acid followed by a treatment of an aprotic solvent, such as dimethyl sulfoxide.

IPC Classes  ?

• B29B 17/02 - Separating plastics from other materials
• C08J 11/08 - Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
• D06P 5/13 - Fugitive dyeing or stripping dyes
• D06P 5/15 - Locally discharging the dyes
• D06L 4/10 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using agents which develop oxygen
• D06L 4/30 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using reducing agents
• D06L 4/75 - Multi-step processes combined with cleaning or washing
• D06L 1/22 - Processes involving successive treatments with aqueous and organic agents
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material

Abstract

The present invention relates to a process for providing a solid fraction from a textile product comprising a natural fibre and/or a synthetic fibre. The process involves the treatment of the textile product with a water-soluble salt of dithionous acid followed by a treatment of an aprotic solvent, such as dimethyl sulfoxide.

IPC Classes  ?

• B29B 17/02 - Separating plastics from other materials
• D06L 4/10 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using agents which develop oxygen
• D06L 4/30 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using reducing agents
• D06L 4/75 - Multi-step processes combined with cleaning or washing
• C08J 11/08 - Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• D06L 1/22 - Processes involving successive treatments with aqueous and organic agents
• D06P 5/13 - Fugitive dyeing or stripping dyes
• D06P 5/15 - Locally discharging the dyes

Abstract

The present invention relates to a process for providing at least one solid fraction from a textile product comprising a natural fibre and/or a synthetic fibre, the process comprises the steps of: i) proving the coloured textile product comprising a natural fibre and/or one or more synthetic fibres; ii) adding a liquid solution of dihydrolevoglucosenone and/or derivatives of dihydrolevoglucosenone in water, thereby providing a decolorized textile product; and iii) separating the decolorized textile product from the liquid fraction, thereby providing the at least one solid fraction.

IPC Classes  ?

• D06P 5/13 - Fugitive dyeing or stripping dyes
• C08J 11/02 - Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
• B29B 17/02 - Separating plastics from other materials

Abstract

The present invention relates to a process for providing at least one solid fraction from a textile product comprising a natural fibre and/or a synthetic fibre, the process comprises the steps of: i) proving the coloured textile product comprising a natural fibre and/or one or more synthetic fibres; ii) adding a liquid solution of dihydrolevoglucosenone and/or derivatives of dihydrolevoglucosenone in water, thereby providing a decolorized textile product; and iii) separating the decolorized textile product from the liquid fraction, thereby providing the at least one solid fraction.

IPC Classes  ?

• B29B 17/02 - Separating plastics from other materials
• C08J 11/02 - Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
• D06P 5/13 - Fugitive dyeing or stripping dyes

Abstract

Process for providing a solid polyester fraction from a textile product comprising natural fibres, and polyester fibres, the process comprising the steps of: a) providing the textile product comprising natural fibres, and polyester fibres; b) adding a liquid decolorizing agent to the textile product, thereby providing a decolorized first solid fraction and a first liquid fraction; c) separating the first solid fraction from the first liquid fraction; d) adding a solvent to the first solid fraction and heating the mixture at a temperature between (170-190) degrees Celsius, preferably within the range of (175-185) degrees Celsius, even more preferably at about 180 degrees Celsius, thereby providing a second solid fraction comprising the natural fibres, and a second liquid fraction comprising polyester; e) separating the second liquid fraction from the second solid fraction; and e) separating the polyester fraction from the second liquid fraction, thereby providing a solid polyester fraction.

IPC Classes  ?

• B29B 17/02 - Separating plastics from other materials
• C08J 11/08 - Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
• B29K 67/00 - Use of polyesters as moulding material
• B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
• B29L 31/00 - Other particular articles
• B29K 105/00 - Condition, form or state of moulded material