Description

Terephthalic Acid/Isophthalic Acid/Sodium Isophthalic Acid Sulfonate/Glycol Copolymer is a specialized, high-performance polymeric material designed for advanced industrial applications. This copolymer is engineered to provide enhanced solubility, thermal stability, and ionic character by incorporating sulfonate groups into a polyester backbone. It is primarily utilized in sectors requiring sophisticated polymer performance, such as specialty coatings, advanced adhesives, and functional textile treatments. The material's unique structure makes it a critical component for formulators seeking to improve product durability and functionality.

Application

• Specialty Polymer Modifier: Used to impart water-dispersibility, antistatic properties, or improved adhesion in polyester-based coatings and films.
• High-Performance Coatings: Serves as a key resin component in industrial and automotive coatings requiring enhanced chemical resistance and weatherability.
• Textile Finishing Agent: Applied in the production of functional fabrics to provide durable press finishes, soil release, or moisture management properties.
• Adhesive and Sealant Formulations: Enhances the bonding strength and flexibility of adhesives used in construction, packaging, and automotive assembly.
• Dispersant and Stabilizer: Acts as an effective dispersing agent for pigments and fillers in aqueous and solvent-based systems.
• Membrane Technology: Investigated for use in ion-exchange or filtration membranes due to its charged polymeric structure.

Basic Information

Product Name	Terephthalic Acid/Isophthalic Acid/Sodium Isophthalic Acid Sulfonate/Glycol Copolymer
CAS No.	104677-82-9
Molecular Formula	(C8H6O4 • C8H6O4 • C8H5NaO7S • C2H6O2)x
Molecular Weight	Polymer - Variable
Synonyms	Poly(terephthalic acid-co-isophthalic acid-co-5-sodiosulfoisophthalic acid-co-ethylene glycol); Sulfonated Poly(ethylene terephthalate-co-isophthalate); PET/PEI Sulfonate Copolymer; Water-Dispersible Polyester Copolymer; SPET; Polyester Polyelectrolyte; Sodium Sulfoisophthalic Acid Glycol Copolyester
EINECS	Contact for details

Quality Control

Our Terephthalic Acid/Isophthalic Acid/Sodium Isophthalic Acid Sulfonate/Glycol Copolymer is manufactured under a stringent quality management system. Each batch is tested to ensure consistent performance characteristics such as sulfonate content, intrinsic viscosity, thermal transition points, and solution stability. Certificates of Analysis (COA) detailing lot-specific data are provided with every shipment to guarantee traceability and compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the original container must be kept sealed to prevent moisture absorption, which can affect performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to structure
Sulfonate Content	2.0 - 5.0 mol% (Typical)
Intrinsic Viscosity	0.50 - 0.80 dL/g (Typical)
Glass Transition Temperature (Tg)	60 - 80 °C
Moisture Content	≤ 2.0 %
pH (1% Aqueous Dispersion)	6.0 - 8.0

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