Description

Hexanedioic Acid, Polymer With 1,3-Butanediol, 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol And 1,3-Isobenzofurandione CAS NO 68527-43-5 is a specialized polyester polyol resin, synthesized from adipic acid, butanediol, trimethylolpropane, and phthalic anhydride. This engineered polymer is valued for its controlled molecular architecture, which provides a balance of flexibility, hardness, and chemical resistance in final coatings and adhesives. It is a critical raw material for formulators in the paints, coatings, and industrial adhesive sectors seeking to enhance product durability and performance.

Application

• High-Performance Industrial Coatings: Used as a polyol component in two-component polyurethane (2K-PU) coatings for automotive, aerospace, and machinery, offering excellent weatherability and chemical resistance.
• Protective and Decorative Paints: Serves as a key resin in alkyd modifications for architectural and maintenance paints, improving drying time, gloss, and adhesion.
• Adhesives and Sealants: Formulated into polyurethane-based adhesives for bonding plastics, metals, and composites, providing strong, flexible bonds.
• Elastomers and Casting Resins: A building block for manufacturing polyurethane elastomers used in rollers, gaskets, and industrial parts requiring toughness.
• Powder Coatings: Can be utilized in carboxyl-functional polyester resins for hybrid powder coating systems, contributing to flow and surface finish.
• Ink Resins: Imparts adhesion and rub resistance in specialty printing inks for packaging and plastics.

Basic Information

Product Name	Hexanedioic Acid, Polymer With 1,3-Butanediol, 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol And 1,3-Isobenzofurandione
CAS No.	68527-43-5
Molecular Formula	(C6H10O4 • C4H10O2 • C6H14O3 • C8H4O3)x
Molecular Weight	Varies (Polymer)
Synonyms	Adipic Acid, Butanediol, Trimethylolpropane, Phthalic Anhydride Copolymer; Polyester Polyol Resin (Adipic Acid/Phthalic Anhydride Type); Adipic Acid-Phthalic Anhydride-BDO-TMP Copolymer; Alkyd Polyol Resin; Phthalic Anhydride Modified Polyester Polyol; Coating Polyester Polyol; 68527-43-5; Adipic Acid/Phthalic Anhydride/BDO/TMP Polymer
EINECS	Contact for details

Quality Control

Our production of this polyester polyol adheres to strict batch-to-batch consistency protocols, with key parameters including hydroxyl value, acid value, viscosity, and color index being rigorously monitored. Quality is assured through in-process and final testing against established internal specifications. A comprehensive Certificate of Analysis (COA) detailing all relevant physicochemical properties is provided with each shipment to ensure it meets your formulation requirements.

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 reactivity and properties.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	150 - 250 (Typical)
Acid Value (mg KOH/g)	≤ 5.0
Viscosity (at 25°C, mPa·s)	2,000 - 15,000 (Grade dependent)
Solid Content (%)	≥ 99.0
Water Content (%)	≤ 0.2

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