Description

4-Cyclohexanedimethanol, Polymer With Dimethyl-1,4-Benzenedicarboxylate, 1,3-Benzenedicarboxylic Acid is a high-performance copolyester resin, specifically a modified polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) grade incorporating cyclohexanedimethanol (CHDM) and isophthalic acid (IPA) monomers. This chemical modification imparts superior clarity, enhanced thermal stability, and excellent chemical resistance compared to standard polyester resins, making it a critical material for demanding engineering applications. It is essential for manufacturers in the packaging, automotive, electronics, and specialty film industries seeking advanced polymer solutions.

Application

• High-Clarity Packaging: Used in the production of premium bottles, jars, and containers for cosmetics, personal care, and food contact applications where excellent transparency and gas barrier properties are required.
• Engineering Thermoplastics: Serves as a key resin in automotive components, electrical connectors, and under-the-hood parts due to its high heat deflection temperature and dimensional stability.
• Specialty Films and Sheets: Formulated into biaxially oriented films (BOPET) for graphic arts, magnetic tapes, and high-performance industrial laminates.
• Polymer Modification: Acts as a performance enhancer and compatibilizer in polymer blends to improve toughness, weatherability, and processing characteristics.
• Fiber and Monofilament Production: Utilized in industrial fibers, textiles, and monofilaments that demand high strength and resistance to chemicals and hydrolysis.
• Hot-Fill and Heat-Set Containers: Ideal for containers that must withstand hot-filling processes without deformation, common in the food and beverage industry.

Basic Information

Product Name	4-Cyclohexanedimethanol, Polymer With Dimethyl-1,4-Benzenedicarboxylate, 1,3-Benzenedicarboxylic Acid
CAS No.	74239-60-4
Molecular Formula	(C8H4O4 · C8H12O2 · C6H10O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	PETG Copolyester; Poly(ethylene terephthalate-co-1,4-cyclohexylenedimethylene terephthalate-co-isophthalate); CHDM-Modified PET; Glycol-Modified Polyethylene Terephthalate; PCTG; Copolyester of Terephthalic Acid, Isophthalic Acid, Ethylene Glycol, and 1,4-Cyclohexanedimethanol; Polyester Resin (CHDM type); 1,4-Cyclohexanedimethanol polymer with dimethyl terephthalate and isophthalic acid
EINECS	Contact for details

Quality Control

Our copolyester resins are manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Key parameters such as intrinsic viscosity (IV), color, melting point, and monomer content are rigorously controlled. Certificates of Analysis (COA) detailing purity, physical properties, and applicable regulatory status (such as FDA compliance for food contact grades) are provided with every shipment.

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 heat sources and open flames. This polymer is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption, which can affect processing and final product properties.

Specification

Item	Specification
Appearance	Clear / Opaque pellets or granules
Intrinsic Viscosity (IV)	0.65 - 0.85 dL/g (Typical)
Melting Point (DSC)	210 - 250 °C
Glass Transition Temperature (Tg)	75 - 85 °C
Color (L* value / b* value)	L* > 80 / b* < 3
Moisture Content	< 0.05 %
Acid Value	< 3.0 mg KOH/g

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