Description

5-Sulfo-1,3-Benzenedicarboxylic Acid, Monosodium Salt, Adipic Acid, Terephthalic Acid, Ethylene Glycol Polymer is a specialized sulfonated copolyester, designed to impart unique ionic functionality and enhanced properties to polymer matrices. This engineered material is critical for formulators seeking to modify surface characteristics, improve compatibility, or introduce specific chemical functionality in advanced applications. It serves as a key performance additive in sectors requiring tailored polymer solutions, such as specialty coatings, advanced material composites, and functional textile treatments.

Application

• Polymer Modification Agent: Used to introduce sulfonate groups into polyester backbones, enhancing hydrophilicity, dyeability, and antistatic properties.
• Specialty Coatings & Inks: Acts as a dispersant and compatibility aid in water-based or solvent-based coating formulations, improving pigment dispersion and film properties.
• Advanced Material Composites: Serves as a functional additive to improve interfacial adhesion between polymer matrices and inorganic fillers or fibers.
• Textile & Fiber Processing: Employed in the production of modified polyester fibers to achieve permanent antistatic effects, improved moisture transport, or enhanced dye uptake.
• Ion-Exchange & Membrane Technology: Utilized as a precursor or additive in the development of ion-exchange resins or selective polymer membranes.
• Adhesive & Sealant Formulations: Functions as a rheology modifier and adhesion promoter in high-performance adhesive systems.

Basic Information

Product Name	5-Sulfo-1,3-Benzenedicarboxylic Acid, Monosodium Salt, Adipic Acid, Terephthalic Acid, Ethylene Glycol Polymer
CAS No.	64945-78-4
Molecular Formula	(C8H4O7S·Na · C6H10O4 · C8H6O4 · C2H6O2)x (Polymeric)
Molecular Weight	Polymer - Variable
Synonyms	SIPM (Sodium Salt of 5-Sulfoisophthalic Acid) - Adipic Acid - Terephthalic Acid - Ethylene Glycol Copolymer; Sulfonated Poly(Ethylene Terephthalate-co-Adipate); Poly(ethylene terephthalate-co-adipate) sulfonated; 5-Sodiosulfoisophthalic Acid Copolyester; Ionic Polyester; PET/A Sulfonated Copolymer; Antistatic Polyester Copolymer; SPET
EINECS	Contact for details

Quality Control

Our production of this functional polymer adheres to strict batch-to-batch consistency protocols. Quality is verified through a suite of analytical methods to ensure key parameters such as sulfonation degree, acid value, intrinsic viscosity, and thermal stability meet specified targets. Certificates of Analysis (COA) detailing lot-specific results are provided with each shipment. We support customer audits and can tailor specifications to align with your GMP or ISO 9001 quality system requirements.

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). Keep the container tightly sealed when not in use to prevent moisture absorption, which may 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)
Acid Value	Contact for details
Intrinsic Viscosity	0.50 - 0.80 dL/g (Typical)
Moisture Content	< 2.0 %
Glass Transition Temp (Tg)	Contact for details
Residual Monomers	< 0.5 % (HPLC)

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