Description

1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol And 1,6-Hexanediol CAS NO 72869-89-7 is a high-performance, amorphous copolyester resin engineered for demanding industrial applications. This polymer offers an exceptional balance of thermal stability, chemical resistance, and mechanical properties, making it a critical raw material for advanced material formulations. It is primarily sought by manufacturers in the coatings, adhesives, and specialty plastics industries seeking to enhance product durability and performance.

Application

• High-Performance Industrial Coatings: Used as a key resin binder in powder coatings, coil coatings, and can coatings, providing excellent weatherability, corrosion resistance, and gloss retention.
• Specialty Adhesives and Sealants: Serves as a base polymer for hot-melt and reactive adhesives requiring strong bonding, flexibility, and resistance to solvents and environmental stress.
• Engineering Plastics and Composites: Acts as a modifier or primary resin in composite materials, imparting improved toughness, heat deflection temperature, and dimensional stability.
• Electrical Insulation Materials: Utilized in wire enamels and insulating varnishes due to its good dielectric properties and thermal endurance.
• Automotive and Aerospace Components: Incorporated into formulations for under-the-hood parts, interior trim, and composite panels where lightweight and durable materials are essential.
• Printing Inks: Used in high-quality overprint varnishes and ink formulations to enhance abrasion resistance, adhesion, and finish quality.

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 1,6-Hexanediol
CAS No.	72869-89-7
Molecular Formula	(C8H6O4·C10H6O5·C5H12O2·C6H14O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(1,4-cyclohexylenedimethylene terephthalate-co-isophthalate) modified with neopentyl glycol and hexanediol; Terephthalic Acid-Isophthalic Acid-Neopentyl Glycol-Hexanediol Copolyester; Copolyester resin based on TPA, IPA, NPG, and HDO; Amorphous copolyester; PCTG-type modified resin; Polyester polyol resin; Thermoplastic copolyester elastomer (TPC) precursor; Aromatic-aliphatic copolyester
EINECS	Contact for details

Quality Control

Our production of this copolyester resin adheres to stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for critical parameters including intrinsic viscosity, acid value, glass transition temperature (Tg), and color. Certificates of Analysis (COA) documenting full specifications are provided with every shipment. Our quality commitment aligns with ISO 9001 standards, and we support our clients' needs for compliance in regulated supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and open flames. This material is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption, which can affect processing characteristics.

Specification

Item	Specification
Appearance	White to off-white granules or pellets
Intrinsic Viscosity (IV)	0.50 - 0.80 dL/g
Acid Value	≤ 3.0 mg KOH/g
Glass Transition Temperature (Tg)	65 - 85 °C
Color (APHA)	≤ 100
Moisture Content	≤ 0.1 %
Identification (IR)	Conforms to standard

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