Description

Hexanedioic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and 1,1-methylenebis4-isocyanatocyclohexane is a high-performance, aliphatic polyurethane prepolymer or resin intermediate. This compound is engineered to deliver exceptional weatherability, chemical resistance, and mechanical durability in final formulations. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries for producing premium-grade products that require long-term performance under demanding environmental conditions.

Application

• High-Performance Coatings: Formulation of automotive clear coats, industrial maintenance paints, and marine coatings where superior gloss retention and resistance to yellowing are critical.
• Advanced Adhesives & Sealants: Used as a key component in structural adhesives for automotive and aerospace assembly, as well as in flexible sealants for construction.
• Elastomers and Castable Urethanes: Serves as a prepolymer for manufacturing durable rollers, wheels, gaskets, and other molded rubber parts requiring toughness and hydrolysis resistance.
• UV-Stable Film Formers: Ideal for outdoor applications in wood finishes, plastic coatings, and graphic arts due to its inherent aliphatic structure providing excellent UV stability.
• Specialty Resins for Composites: Employed in resin systems for fiber-reinforced plastics (FRP) used in transportation and recreational equipment.
• Textile and Leather Finishes: Provides flexible, abrasion-resistant, and waterproof finishes for technical textiles and synthetic leather.

Basic Information

Product Name	Hexanedioic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and 1,1-methylenebis4-isocyanatocyclohexane
CAS No.	71839-51-5
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Aliphatic Polyurethane Prepolymer; Adipic Acid/Neopentyl Glycol/Trimethylolpropane/HDI/IPDI Copolymer; HDI-IPDI Polyester Polyol Adduct; Aliphatic Polyester Polyurethane Resin; Poly(hexamethylene-co-isophorone diisocyanate) polyester polyol; Weatherable Polyurethane Intermediate; Light-stable PU Prepolymer; CAS 71839-51-5
EINECS	Contact for details

Quality Control

Every batch of our polyurethane intermediate is produced under strict quality management systems. We control key parameters such as NCO content, viscosity, color, and acid value to ensure batch-to-batch consistency and performance reliability. A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with each shipment. Our production adheres to relevant ISO standards, and we support our customers' needs for REACH, FDA, and other regulatory compliance documentation.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat, open flames, and sources of ignition. Under these conditions, the product is typically stable for 12 months from the date of manufacture. Always check the drum or container for specific storage instructions and shelf-life information.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Color (Gardner)	≤ 2
Acid Value	≤ 1.0 mg KOH/g
Moisture (Karl Fischer)	≤ 0.05 %
Identification (IR)	Conforms

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