Description

Hexanedioic acid, polymer with 2,2-bis(hydroxymethyl)-1,3-propanediol, 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,3-isobenzofurandione CAS NO 68517-03-3 is a specialized polyester polyol resin, engineered for high-performance applications. This polymer is valued for its excellent balance of flexibility, chemical resistance, and durability, making it a critical raw material for advanced coating and adhesive formulations. It is primarily sought by manufacturers in the paints & coatings, industrial adhesives, and specialty plastics sectors who require consistent quality and reliable performance in demanding environments.

Application

• High-Performance Industrial Coatings: Used as a key polyol component in two-component polyurethane coatings for metal, concrete, and plastic substrates, providing excellent weather resistance and mechanical properties.
• Specialty Adhesives and Sealants: Serves as a backbone resin in moisture-cure and reactive hot-melt polyurethane adhesives, offering strong bonding and flexibility.
• Elastomers and Casting Resins: Employed in the formulation of polyurethane elastomers for gaskets, wheels, and industrial parts requiring toughness and abrasion resistance.
• Automotive and Aerospace Finishes: A critical ingredient in premium clearcoats and primer surfaces that demand superior gloss retention and chemical stain resistance.
• Fiberglass Reinforced Plastics (FRP): Used in gel coats and resin matrices for composite materials in marine and transportation applications.
• Flexible Packaging Inks and Overprint Varnishes: Provides adhesion and scuff resistance in printing applications for films and foils.

Basic Information

Item	Details
Product Name	Hexanedioic acid, polymer with 2,2-bis(hydroxymethyl)-1,3-propanediol, 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,3-isobenzofurandione
CAS No.	68517-03-3
Molecular Formula	(C6H10O4 • C5H12O4 • C5H12O2 • C6H14O4 • C8H4O3)x
Molecular Weight	Polymer - Variable
Synonyms	Poly(neopentyl glycol-adipate-phthalate) polyester polyol; Adipic acid-phthalic acid-neopentyl glycol copolymer; Polyester polyol based on adipic acid, phthalic anhydride, and neopentyl glycol; NPG-Adipate-Phthalate polyester; Adipic acid/Phthalic anhydride/NPG copolymer; Hydroxyl-terminated polyester resin; Polyester polyol resin 68517-03-3; Aliphatic-aromatic copolyester polyol
EINECS	Contact for details

Quality Control

Our production of this polyester polyol adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as hydroxyl value, acid value, viscosity, and color are rigorously tested against internal specifications. A comprehensive Certificate of Analysis (COA) detailing these results is provided with every shipment to support your quality assurance and regulatory 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Clear, viscous liquid to pale yellow solid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (mPa·s)	Contact for details
Color (Gardner)	≤ 3
Water Content (%)	≤ 0.1
Identification (IR)	Conforms

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