Description

1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Benzenedicarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol And 1,6-Hexanediol is a high-performance copolyester resin engineered for superior durability and chemical resistance. This polymer is valued for its excellent thermal stability, mechanical strength, and formulation versatility, making it a critical raw material for advanced industrial coatings and specialty plastics. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as producers of high-grade engineering plastics and composite materials.

Application

• High-Performance Industrial Coatings: Used as a key resin binder in powder coatings, coil coatings, and can coatings requiring excellent weatherability, corrosion resistance, and flexibility.
• Automotive and Transportation Finishes: Provides the foundational polymer chemistry for durable topcoats, primers, and clear coats that withstand harsh environmental conditions.
• Adhesives and Sealants: Serves as a base polymer for formulating structural adhesives and high-strength sealants with strong bonding properties and chemical resistance.
• Specialty Plastics and Composites: Incorporated into engineering plastics and fiber-reinforced composites to enhance thermal stability, dimensional integrity, and mechanical performance.
• Wire and Cable Insulation: Used in insulation enamels and coatings that require excellent electrical properties and resistance to heat and solvents.
• Packaging Coatings: Applied in food-contact and protective coatings for metal and plastic packaging, offering barrier properties and compliance with safety standards.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Benzenedicarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol And 1,6-Hexanediol
CAS No.	68400-06-6
Molecular Formula	(C8H6O4 • C8H6O4 • C5H12O2 • C6H14O2)n
Molecular Weight	Polymer - Variable
Synonyms	Poly(1,3-benzenedicarboxylic acid-co-1,4-benzenedicarboxylic acid-co-2,2-dimethyl-1,3-propanediol-co-1,6-hexanediol); Isophthalic Acid-Terephthalic Acid-Neopentyl Glycol-Hexanediol Copolymer; IPA/TPA/NPG/HD Copolyester; Polyester Resin from Isophthalic Acid, Terephthalic Acid, Neopentyl Glycol, and 1,6-Hexanediol; NPG-HD Modified IPA/TPA Copolyester; Copolyester of Isophthalic Acid, Terephthalic Acid, Neopentyl Glycol, and Hexanediol; Light-Stable Polyester Resin; Weatherable Polyester Resin
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 tested. Certificates of Analysis (COA) detailing all specifications are provided with each shipment. We support compliance with relevant industry standards for coatings and polymers, and our quality protocols are designed to meet the demands of global supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from strong acids and organic solvents. As with many polymeric materials, prolonged exposure to elevated temperatures or high humidity should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Acid Value (mg KOH/g)	≤ 5.0
Hydroxyl Value (mg KOH/g)	20 - 60
Viscosity (mPa·s, @ specified conc. & temp)	Specified per grade
Glass Transition Temperature (Tg)	40 - 70 °C
Color (Gardner)	≤ 2
Softening Point (Ring & Ball)	90 - 120 °C
Identification (IR)	Conforms to structure

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