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 3-hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate is a high-performance, multi-component copolyester resin designed for demanding industrial applications. This specialized polymer offers a unique balance of thermal stability, chemical resistance, and mechanical properties, making it a critical raw material for advanced coatings and engineered plastics. It is primarily sought by manufacturers in the automotive, electronics, and specialty coatings sectors who require reliable, high-grade materials for their formulations.

Application

• High-Performance Powder Coatings: As a key resin component for durable, weather-resistant, and decorative finishes on automotive parts, appliances, and architectural aluminum.
• Electrical Insulation Materials: Used in the formulation of wire enamels, insulating varnishes, and encapsulants for electronic components due to its excellent dielectric properties and thermal endurance.
• Industrial and Protective Coatings: Serves as a base for corrosion-resistant coatings for pipelines, chemical storage tanks, and marine equipment.
• Engineered Thermoplastics: Incorporated as a modifier to enhance the heat deflection temperature, dimensional stability, and chemical resistance of polyester-based engineering plastics.
• Adhesives and Sealants: Utilized in the production of high-strength, temperature-resistant structural adhesives for automotive and aerospace assemblies.
• Specialty Inks and Toners: Acts as a fuser resin in electrophotographic toners and as a binder in high-temperature resistant inks.

Basic Information

Item	Details
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 3-hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate
CAS No.	72869-91-1
Molecular Formula	(C8H6O4·C8H6O4·C10H6O5·C5H12O2·C10H20O4)x
Molecular Weight	Polymer - Contact for details
Synonyms	Copolyester resin based on IPA, TPA, TMA, NPG, and HPHP; Isophthalic acid-Terephthalic acid-Trimellitic acid-Neopentyl glycol-Hydroxypivalyl hydroxypivalate copolymer; IPA/TPA/TMA/NPG/HPHP copolyester; Powder coating resin; Thermosetting polyester resin; Glycidyl ester-free polyester; Carboxyl-functional polyester resin; Poly(neopentyl glycol isophthalate-terephthalate-trimellitate) modified with hydroxypivalyl hydroxypivalate
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 specification results is provided with every 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, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed when not in use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Acid Value (mg KOH/g)	30 - 50
Hydroxyl Value (mg KOH/g)	Contact for details
Glass Transition Temperature (Tg)	55 - 70 °C
Softening Point (Ring & Ball)	105 - 120 °C
Viscosity (200°C, mPa·s)	Contact for details
Color (Gardner)	≤ 2
Volatile Content	≤ 1.0 %

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