Description

1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol And 1,2-Ethanediol CAS NO 36621-48-4 is a high-performance copolyester resin engineered for demanding industrial applications. This specialized polymer offers a unique balance of thermal stability, chemical resistance, and mechanical properties, making it a critical material for advanced coatings and composites. It is essential for manufacturers in sectors requiring durable, high-performance polymeric materials that can withstand harsh chemical environments.

Application

• High-Performance Industrial Coatings: Used as a key resin in powder coatings and coil coatings for appliances, architectural cladding, and automotive components, providing excellent weatherability and chemical resistance.
• Electrical Insulation Materials: Serves as a base polymer for wire enamels and insulating varnishes, offering thermal stability and dielectric strength.
• Adhesives and Sealants: Formulated into high-strength structural adhesives and sealants for the aerospace, automotive, and construction industries.
• Engineering Plastics and Composites: Acts as a modifier or primary resin in composite materials, enhancing heat distortion temperature and dimensional stability.
• Can and Container Coatings: Utilized in interior linings for food and beverage containers, providing a barrier against contents and ensuring product safety.
• Printing Inks: Incorporated into high-quality printing inks for packaging and publications, improving gloss, adhesion, and rub resistance.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol And 1,2-Ethanediol
CAS No.	36621-48-4
Molecular Formula	(C10H8O4·C10H6O5·C5H12O2·C2H6O2)x
Molecular Weight	Polymer - Variable
Synonyms	Poly(1,4-cyclohexylenedimethylene terephthalate-co-isophthalate) modified with neopentyl glycol and ethylene glycol; Terephthalic Acid-Iso-Phthalic Acid-Neopentyl Glycol-Ethylene Glycol Copolymer; Copolyester resin based on TPA, IPA, NPG, and EG; Polyester resin (TPA/IPA/NPG/EG); 36621-48-4 polymer; Aromatic copolyester from terephthalic acid, isophthalic acid, neopentyl glycol, and ethylene glycol; NPG-modified PET/PEI copolymer
EINECS	Contact for details

Quality Control

Our production of this copolyester resin adheres to stringent quality management systems, ensuring batch-to-batch consistency for critical performance parameters like acid value, hydroxyl value, viscosity, and glass transition temperature (Tg). Certificates of Analysis (COA) are provided with each shipment, detailing specifications for identity, purity, and key physical properties. We support compliance with relevant industry standards, including those for food contact materials where applicable.

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). Keep away from strong acids and organic solvents. The product is typically supplied in solid flake or pellet form; protect from moisture and excessive heat to prevent caking or premature polymerization.

Specification

Item	Specification
Appearance	White to off-white flakes or pellets
Identification (IR)	Conforms to standard
Acid Value	≤ 5.0 mg KOH/g
Hydroxyl Value	Contact for details
Viscosity (Solution)	Contact for details
Glass Transition Temperature (Tg)	Contact for details
Color (Gardner)	≤ 2
Moisture Content	≤ 0.5 %

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