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 and 2,2-oxybisethanol is a high-performance, synthetic copolyester resin designed for demanding industrial applications. This polymer offers a unique balance of properties, including excellent chemical resistance, thermal stability, and mechanical strength, making it a critical raw material for advanced coatings and composites. It is primarily sought by manufacturers in the paints & coatings, specialty plastics, and high-durability adhesive sectors seeking to enhance product performance and longevity.

Application

• High-Performance Industrial Coatings: Used as a resin binder in powder coatings, coil coatings, and can coatings requiring superior weatherability and chemical resistance.
• Specialty Adhesives and Sealants: Serves as a key polymer component in formulations for structural adhesives and automotive sealants demanding high bond strength and durability.
• Engineering Plastics and Composites: Incorporated into polymer blends and composite materials to improve thermal stability, dimensional stability, and mechanical properties.
• Electrical Insulation Materials: Utilized in the production of wire enamels and insulating varnishes due to its good dielectric properties and thermal endurance.
• Automotive Components: Applied in under-the-hood parts and exterior trim where resistance to fuels, oils, and environmental stress cracking is essential.
• Protective Marine and Anticorrosive Coatings: Formulated into coatings for ships, offshore platforms, and infrastructure to provide long-term protection against harsh marine environments.

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 and 2,2-oxybisethanol
CAS No.	116889-73-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Copolyester of isophthalic acid, terephthalic acid, trimellitic anhydride, neopentyl glycol, and diethylene glycol; Poly(isophthalate-co-terephthalate-co-trimellitate) with NPG and DEG; NPG/DEG-modified IPA/TPA/TMA copolyester; Thermoplastic copolyester resin; Isophthalic-Terephthalic-Trimellitic Acid Copolymer with NPG and DEG; Poly(neopentyl glycol isophthalate-co-terephthalate-co-trimellitate) with diethylene glycol; Aromatic copolyester based on IPA, TPA, TMA, NPG, and DEG.
EINECS	Contact for details

Quality Control

Our production of this copolyester resin adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. 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 relevant specifications is provided with each shipment to support your quality assurance protocols.

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 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 product properties.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Acid Value	≤ 5.0 mg KOH/g
Hydroxyl Value	Contact for details
Viscosity (at 25°C, 40% in solvent)	Contact for details
Glass Transition Temperature (Tg)	50 - 80 °C
Color (Gardner)	≤ 3
Moisture Content	≤ 0.5 %

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