Description

1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid, 1,6-hexanediol and 1,3-isobenzofurandione CAS NO 84943-76-0 is a high-performance, branched polyester polyol resin. This specialized polymer is engineered to deliver a unique balance of flexibility, hardness, and chemical resistance, making it a critical intermediate for advanced coating systems. It is primarily sought after by formulators in the automotive, industrial maintenance, and specialty adhesive sectors who require durable, high-gloss finishes with excellent weatherability.

Application

• High-Solid and Solvent-Borne Industrial Coatings: As a key resin component for machinery, agricultural equipment, and metal substrates requiring superior durability.
• Automotive OEM and Refinish Paints: Used in clearcoats and pigmented basecoats to enhance gloss retention, scratch resistance, and UV stability.
• Coil and Can Coatings: Provides the necessary film formation and chemical resistance for pre-coated metals used in construction and packaging.
• Radiation-Curable Systems (e.g., UV-curable coatings): Serves as a reactive oligomer or modifier to improve crosslink density and final film properties.
• Adhesives and Sealants: Imparts toughness and adhesion to various substrates in structural and assembly applications.
• Plastic Coatings and Inks: Used for coating plastic components and in specialty printing inks where flexibility and adhesion are critical.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid, 1,6-hexanediol and 1,3-isobenzofurandione
CAS No.	84943-76-0
Molecular Formula	(C8H6O4 · C5H12O2 · C6H14O4 · C6H10O4 · C6H14O2 · C8H4O3)n
Molecular Weight	Polymer - Contact for details
Synonyms	Polyester polyol based on isophthalic acid, neopentyl glycol, trimethylolpropane, adipic acid, 1,6-hexanediol, and phthalic anhydride; Branched polyester polyol resin; Isophthalic acid-adipic acid-neopentyl glycol-trimethylolpropane-hexanediol-phthalic anhydride copolymer; Polyester polyol 84943-76-0; IPA/AA/NPG/TMP/HD/PA copolymer; Coating polyester polyol; Multifunctional polyester polyol; Polyester resin for coatings
EINECS	Contact for details

Quality Control

Every batch of our polyester polyol resin is manufactured under a strict quality management system and undergoes comprehensive analytical testing to ensure consistent performance. Key parameters such as hydroxyl value, acid value, viscosity, and color are rigorously controlled. A Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment to support your quality assurance and formulation processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to prevent moisture absorption, which can affect product properties. Keep away from heat and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 2
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Viscosity (at 25°C, mPa·s)	Contact for details
Solid Content (%)	Contact for details
Water Content (KF, %)	≤ 0.1

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