Description

1,3-Benzenedicarboxylic acid, polymer with 1,4-benzenedicarboxylic acid, 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 2,2-dimethyl-1,3-propanediol, 1,2-ethanediol and 2,2-oxybisethanol is a specialized, high-performance copolyester resin engineered for demanding industrial applications. This polymer's unique composition, incorporating isophthalic acid, terephthalic acid, trimellitic anhydride, neopentyl glycol, and ethylene glycol, provides an exceptional balance of durability, chemical resistance, and thermal stability. It is a critical raw material for manufacturers in the coatings, adhesives, and advanced plastics sectors seeking to enhance product performance and longevity.

Application

• High-Performance Industrial Coatings: Used as a resin base for powder coatings, coil coatings, and can coatings, offering excellent weatherability, corrosion resistance, and mechanical properties.
• Automotive Finishes: A key component in primer-surfacers and clear coats, providing superior gloss retention, scratch resistance, and durability against environmental exposure.
• Adhesives and Sealants: Imparts strong adhesion, flexibility, and chemical resistance to structural adhesives and industrial sealants.
• Plastic Modifiers and Composites: Acts as a performance additive or matrix resin to improve the heat resistance, dimensional stability, and strength of engineering plastics and composite materials.
• Wire and Cable Enamels: Used in insulating varnishes and enamels for electrical wires, providing excellent dielectric properties and thermal class ratings.
• Decorative and Functional Films: Serves as a resin for flexible packaging films, release films, and specialty laminates requiring high clarity and barrier properties.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 1,4-benzenedicarboxylic acid, 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 2,2-dimethyl-1,3-propanediol, 1,2-ethanediol and 2,2-oxybisethanol
CAS No.	152698-67-4
Molecular Formula	(C8H6O4·C8H6O4·C10H6O6·C5H12O2·C2H6O2·C4H10O3)n
Molecular Weight	Polymer - Contact for details
Synonyms	Copolyester resin of IPA, TPA, TMA, NPG, EG, and Diethylene Glycol; IPA/TPA/TMA/NPG/EG/DEG Copolyester; Isophthalic Acid-Terephthalic Acid-Trimellitic Anhydride-Neopentyl Glycol-Ethylene Glycol-Diethylene Glycol Copolymer; Poly(isophthalate-co-terephthalate-co-trimellitate) with NPG/EG/DEG; TMA-modified IPA/TPA polyester resin; Glycol-modified aromatic copolyester; Thermosetting polyester resin CAS 152698-67-4
EINECS	Contact for details

Quality Control

Our production of this advanced copolyester resin adheres to strict quality management systems, ensuring batch-to-batch consistency for critical coating and polymer formulations. Key parameters such as acid value, hydroxyl value, viscosity, glass transition temperature (Tg), and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all specification results is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

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

Specification

Item	Specification
Appearance	White to off-white granules or powder
Acid Value (mg KOH/g)	5 - 25
Hydroxyl Value (mg KOH/g)	10 - 50
Viscosity (25°C, 60% in solvent)	200 - 800 mPa·s
Glass Transition Temperature (Tg)	50 - 70 °C
Color (Gardner)	≤ 2
Softening Point (Ring & Ball)	100 - 130 °C
Volatile Content	≤ 1.0 %

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