Description

1,3-Benzenedicarboxylic Acid, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol, Hexanedioic Acid And 1,6-Hexanediol CAS NO 66028-25-9 is a high-performance, branched polyester polyol designed for demanding industrial applications. This specialized polymer is valued for its excellent mechanical properties, chemical resistance, and versatility in formulation. It is a critical raw material for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for polyurethane foam production.

Application

• High-Performance Polyurethane Coatings: Used as a key polyol component in two-component (2K) polyurethane coatings for automotive, industrial, and protective applications, providing excellent durability, gloss, and chemical resistance.
• Elastomers and Sealants: Serves as a building block for polyurethane elastomers and sealants requiring a balance of flexibility, tensile strength, and weatherability.
• Adhesives: Formulated into structural and laminating adhesives where strong bonding and resistance to environmental stress are paramount.
• Flexible and Rigid Foams: Can be utilized in the synthesis of specialized polyurethane foams, influencing cell structure and physical properties.
• Resin Modifier: Acts as a reactive modifier in other polymer systems to enhance characteristics like toughness, adhesion, and crosslink density.

Basic Information

Item	Detail
Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol, Hexanedioic Acid And 1,6-Hexanediol
CAS No.	66028-25-9
Molecular Formula	(C8H6O4 • C6H14O3 • C6H10O4 • C6H14O2)x
Molecular Weight	Polymer - Variable
Synonyms	Poly(1,3-benzenedicarboxylic acid-co-2-ethyl-2-(hydroxymethyl)-1,3-propanediol-co-hexanedioic acid-co-1,6-hexanediol); Isophthalic Acid/TMP/Adipic Acid/HD Polyester Polyol; Branched Polyester Polyol; Polyester Polyol based on Isophthalic Acid, Trimethylolpropane, Adipic Acid, and 1,6-Hexanediol; TMP/Adipate/Isophthalate Polyol; CAS 66028-25-9
EINECS	Contact for details

Quality Control

Our production of this polyester polyol adheres to strict quality management systems. Every batch is characterized by key parameters including hydroxyl value, acid value, viscosity, and color to ensure consistency and performance. Certificates of Analysis (COA) documenting these specifications are available upon request 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/59-77°F). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (cPs)	Contact for details
Water Content (%)	≤ 0.1

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