Dye Carrier for Polyester (Dicyclohexyl Phthalate)
CAS Number: 84-61-7
Dicyclohexyl phthalate is an aromatic dye carrier that swells polyester fiber at atmospheric boil (100°C), allowing disperse dye penetration without high-pressure equipment. It temporarily plasticizes the PET polymer chain, increasing free volume for dye diffusion. Used in atmospheric pressure dyeing of polyester and polyester blends where HT equipment is unavailable.
Technical Specifications
| appearance | White crystalline powder or flakes |
| moisture (%) | ≤0.1 |
| active content (%) | ≥99 |
| melting point (°C) | 65–68 |
| acid value (mg KOH/g) | ≤0.1 |
Applications
- Atmospheric pressure carrier dyeing of polyester at 100°C
- Dyeing of polyester-wool blends at boil to protect wool fiber
- Dyeing of polyester-acetate blends sensitive to high temperature
- Carrier dyeing of thick polyester upholstery and industrial fabrics
- Pre-treatment of polyester for improved dye uptake in HT dyeing
Key Features
- Enables atmospheric pressure polyester dyeing, eliminating need for HT equipment
- Protects wool and other heat-sensitive fibers in blends during dyeing
- Good emulsification in water when combined with nonionic emulsifiers
- Readily washed out after dyeing without fabric handle deterioration
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CAS Number
84-61-7
Category
Textile Dyeing AuxiliariesAvailability
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