Description

1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 2,2-Dimethyl-1,3-Propanediol CAS NO 37871-48-0 is a high-performance polyester resin, specifically a co-polyester derived from terephthalic acid, trimellitic anhydride, and neopentyl glycol. This polymer is engineered to deliver exceptional durability, chemical resistance, and thermal stability for demanding industrial applications. It is primarily sought by manufacturers in the coatings, adhesives, and specialty plastics industries for formulating products that require a robust protective finish.

Application

• High-Performance Industrial Coatings: Used as a key resin in powder coatings and coil coatings for appliances, architectural cladding, and automotive components, providing excellent weatherability and corrosion resistance.
• Heat-Resistant Enamels: Serves as a binder in high-temperature resistant paints and enamels for industrial ovens, exhaust systems, and cookware.
• Specialty Adhesives and Sealants: Imparts strong adhesion and flexibility in formulations for construction, automotive, and aerospace bonding applications.
• Engineered Plastics and Composites: Acts as a modifier or primary polymer in composite materials to enhance mechanical strength and chemical inertness.
• Wire and Cable Insulation: Utilized in insulating varnishes and coatings that require good electrical properties and thermal endurance.
• Can and Container Coatings: Formulated into interior linings for food and beverage containers due to its excellent barrier properties and potential compliance with relevant food contact regulations.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 2,2-Dimethyl-1,3-Propanediol
CAS No.	37871-48-0
Molecular Formula	(C8H6O4·C10H6O6·C5H12O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Terephthalic Acid, Polymer with Trimellitic Anhydride and Neopentyl Glycol; Poly(Terephthalic Acid-co-Trimellitic Anhydride-co-Neopentyl Glycol); NPG-TA-TMA Copolyester; Neopentyl Glycol-Terephthalic Acid-Trimellitic Anhydride Copolymer; Co-polyester of Terephthalic Acid, Trimellitic Anhydride, and Neopentyl Glycol; Poly(neopentyl glycol terephthalate-co-trimellitate); Acid-functional Polyester Resin; Carboxylated Polyester Resin
EINECS	Contact for details

Quality Control

Our production of this co-polyester 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. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We support compliance with global regulatory frameworks, including REACH, and can tailor quality protocols to meet specific customer or application standards.

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, open flames, and incompatible materials such as strong oxidizers. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption, which can affect properties.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Acid Value	20 - 50 mg KOH/g
Hydroxyl Value	Contact for details
Viscosity (at specified conc. & temp.)	Contact for details
Glass Transition Temperature (Tg)	40 - 70 °C
Softening Point	Contact for details
Color (Gardner)	≤ 2
Moisture Content	≤ 0.5 %

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