Product
Disperse Dyes
Disperse Dyes are the dye class for polyester, applied by high-temperature or thermosol dyeing and used in sublimation printing, in low, medium and high energy ranges.
- Grades / forms
- Polyester, high energy
- Documents
- TDS to view and download
Overview
Polyester has no ionic sites, so it cannot be dyed with water-soluble dyes. Disperse dyes are tiny, almost insoluble molecules milled to sub-micron size and kept in suspension with dispersants. At around 130 °C under pressure the fibre opens up and the dye dissolves into it, becoming locked in as the fibre cools.
Disperse dyes are grouped by energy level. Low-energy (E type) dyes dye quickly at lower temperatures but are less resistant to sublimation. High-energy (S type) dyes need more heat but withstand heat-setting, pleating and thermosol processes. Disperse dyes are also the basis of sublimation transfer printing on polyester.
Applications
- 1Polyester yarn, fabric and garment dyeing
- 2Polyester/cotton and polyester/viscose blends (with a second dye class)
- 3Acetate and triacetate fibres
- 4Thermosol continuous dyeing
- 5Sublimation transfer printing inks
Specification
- Product
- Disperse Violet 28
- Appearance
- Dark purple powder
- Molecular Weight
- 307.13
- Melting Point
- 295°C
- Density
- 1.637
- Light fastness (Xenon)
- 7
- Washing – colour change / PES staining
- 5 / 4
- Perspiration – colour change / PES staining
- 5 / 5
- Sublimation – colour change / PES staining
- 4 / 2-3
- Rubbing – colour change / PES staining
- 5 / 5
Specification as stated on our Technical Data Sheet, which you can download below.
Documents
PDF documents from our quality records.
Packing & storage
Packing
- 25 kg fibre drums with PE liner
- 25 kg cartons
Storage & handling
Keep sealed and dry. Liquid dispersions should be protected from freezing and stirred before use.
Enquire
Get a price for Disperse Dyes
Send grade, quantity and destination port. Price, lead time and documents come back within one business day.
Request a quotation or call +91 97979 77958- Certificate of Analysis with every batch
- SDS in destination format
- Made to your specification
- Private label packing
Questions
Disperse Dyes, answered.
Low-energy (E type) disperse dyes dye quickly and level well but have low sublimation fastness. High-energy (S type) dyes need higher dyeing temperatures but resist sublimation during heat-setting and thermosol processes. Medium-energy (SE type) dyes balance the two.
Reduction clearing with sodium hydrosulphite and caustic soda removes loose dye from the polyester surface. Without it, dark shades show poor rub and wash fastness and may stain other fabrics.
Yes. Selected disperse dyes with suitable sublimation properties are used in sublimation and transfer printing inks, which transfer from paper into polyester under heat and pressure.
Yes. Cosmo Chemistry manufactures and exports Disperse Dyes from Surat, Gujarat, India to more than 55 countries, for customers in the industrial & cosmetic dyes industry. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Disperse Dyes from Cosmo Chemistry includes a batch-specific Certificate of Analysis (COA) and Safety Data Sheet (SDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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