Description

1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Benzenedicarboxylic Acid And 2,2-Dimethyl-1,3-Propanediol is a high-performance copolyester resin, also known as a modified poly(neopentyl glycol isophthalate-co-terephthalate). This polymer is engineered to deliver exceptional durability, chemical resistance, and thermal stability, making it a critical raw material for demanding industrial applications. It is primarily sought by manufacturers in the coatings, adhesives, and specialty plastics industries for formulating products that require long-lasting performance under harsh environmental conditions.

Application

• High-Performance Industrial Coatings: Used as a key resin in powder coatings, coil coatings, and can coatings, providing excellent weatherability, corrosion resistance, and mechanical strength.
• Specialty Adhesives and Sealants: Serves as a base polymer for formulating adhesives with strong bonding properties and resistance to solvents and moisture.
• Engineering Plastics and Composites: Incorporated as a modifier to enhance the thermal and chemical resistance of polyester-based composites and molded parts.
• Electrical Insulation Materials: Utilized in wire enamels and insulating varnishes due to its good dielectric properties and thermal endurance.
• Automotive Finishes: A component in clear coats and primer surfaces that require high gloss retention and resistance to fuels and cleaning agents.
• Packaging Coatings: Applied in food and beverage can linings where compliance and resistance to contents are paramount.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Benzenedicarboxylic Acid And 2,2-Dimethyl-1,3-Propanediol
CAS No.	25214-38-4
Molecular Formula	(C8H6O4 · C8H6O4 · C5H12O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(neopentyl glycol isophthalate-co-terephthalate); Poly(NPG-IPA/TPA); Modified Polyester Resin (NPG based); Copolyester of Isophthalic Acid, Terephthalic Acid, and Neopentyl Glycol; NPG-IPA/TPA Copolyester; 2,2-Dimethyl-1,3-propanediol, polymer with 1,3-benzenedicarboxylic acid and 1,4-benzenedicarboxylic acid; Neopentyl Glycol Isophthalate Terephthalate Copolymer
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. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We support compliance with relevant industry standards for coatings and polymers.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. The product may be hygroscopic; prolonged exposure to high humidity should be avoided to prevent moisture absorption which can affect processing properties.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Acid Value (mg KOH/g)	≤ 5.0
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity (mPa·s, @ specific temp & conc.)	Contact for details
Glass Transition Temperature (Tg)	45 - 75 °C (DSC)
Color (Gardner)	≤ 2
Identification (IR)	Conforms to structure

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