Description

Polyester Fibre Coloring Modifier is a specialized chemical additive designed to enhance and control the dyeing process of synthetic polyester fibers. This compound is critical for achieving consistent, vibrant, and fast colors while improving dye uptake efficiency and uniformity. It is an essential component for textile manufacturers, dye houses, and chemical suppliers focused on synthetic fiber production and coloration.

Application

• Primary application as a dyeing modifier and carrier for polyester fibers and fabrics.
• Enhances the dispersion and leveling of disperse dyes during high-temperature dyeing processes.
• Improves color yield and shade reproducibility in batch and continuous dyeing operations.
• Used in the coloration of polyester textiles for apparel, home furnishings, and technical textiles.
• Functions as a processing aid to reduce dyeing time and energy consumption.
• Applicable in the dyeing of polyester blends with other fibers like cotton or wool.
• Supports the production of deep, rich shades and black colors on polyester substrates.
• May be utilized in masterbatch formulations for mass coloration of polyester polymers.

Basic Information

Product Name	Polyester Fibre Coloring Modifier
CAS No.	39655-57-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyester Dyeing Modifier; Polyester Dyeing Carrier; Fiber Coloring Aid 39655-57-7; Textile Dyeing Auxiliary; Polyester Dye Leveling Agent; Dyeing Accelerator for Polyester; Synthetic Fiber Dye Modifier; Aromatic Ester-based Dye Carrier
EINECS	Contact for details

Quality Control

Our Polyester Fibre Coloring Modifier is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including assessment of active content, purity, and key physical properties relevant to textile applications. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong heat sources and incompatible materials. Ensure containers are kept tightly sealed when not in use to maintain product integrity.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms to standard
Active Content	≥ 98.0 %
Moisture (KF)	≤ 0.5 %
Density (20°C)	1.05 - 1.15 g/cm³
Refractive Index (20°C)	1.480 - 1.510
Acid Value	≤ 1.0 mg KOH/g

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.