Description

1,3-Benzenedicarboxylic Acid, 5-Sulfo-, Monosodium Salte, Polymer With 1,4-Benzenedicarboxylica Acid And 1,2-Ethanediol is a specialized sulfonated copolyester, a high-performance polymer engineered to impart unique ionic functionality and water-dispersibility to materials. This compound is critical for formulators seeking to enhance the compatibility, adhesion, and processing characteristics of polymer systems in aqueous environments. It is primarily utilized in advanced coating technologies, specialty adhesives, and as a functional additive in textile and film production where controlled solubility and ionic interaction are required.

Application

• Water-Based Industrial Coatings: Acts as a dispersing agent and compatibility enhancer for pigments and resins, improving film formation and stability.
• Specialty Adhesives and Sealants: Provides improved adhesion to polar substrates and can modify rheological properties in aqueous adhesive formulations.
• Textile Chemical Processing: Used as a functional polymer in fabric coatings and finishes to impart moisture management, antistatic, or dye-leveling properties.
• Polymer Modification: Serves as an ionic monomer unit to create sulfonated copolyesters with enhanced hydrophilicity for membrane or filtration applications.
• Inkjet Receptor Layers: Employed in the formulation of coatings for specialty papers and films to improve ink adhesion and color vibrancy.
• Composite Materials: Enhances the interfacial bonding between inorganic fillers and polyester matrices in composite systems.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, 5-Sulfo-, Monosodium Salte, Polymer With 1,4-Benzenedicarboxylica Acid And 1,2-Ethanediol
CAS No.	25822-53-1
Molecular Formula	(C8H4NaO7S·C8H6O4·C2H6O2)x
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	Poly(ethylene terephthalate-co-5-sulfoisophthalate sodium salt); Sulfonated Polyethylene Terephthalate (SPET); Sodium 5-Sulfoisophthalic Acid-Ethylene Glycol-Terephthalic Acid Copolymer; Poly(ethylene terephthalate-co-sodium 5-sulfoisophthalate); PET-SIPNa; 5-Sulfoisophthalic Acid, Monosodium Salt, Polymer with Ethylene Glycol and Terephthalic Acid; SPET Polymer; AQ Polymer (Eastman trade name series)
EINECS	Contact for details

Quality Control

Our production of this sulfonated copolyester adheres to strict quality management systems to ensure batch-to-batch consistency in ionic content, molecular weight distribution, and solution properties. Each lot is characterized using advanced analytical techniques including FT-IR, NMR, and GPC/SEC to confirm structural integrity and performance specifications. A comprehensive Certificate of Analysis (COA) detailing sulfonation degree, inherent viscosity, pH, and solids content is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed when not in use to minimize moisture absorption, which can affect handling and performance properties.

Specification

Item	Specification
Appearance	Off-white to pale yellow granules or powder
Identification (IR)	Conforms to structure
Sulfonation Degree	2.0 - 5.0 mol% (Typical)
Inherent Viscosity	0.50 - 0.80 dL/g (Typical)
Solids Content	> 98.0 %
pH (in aqueous dispersion)	6.0 - 8.0
Moisture Content (KF)	< 2.0 %

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