Description

Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with α-hydro-ω-hydroxypoly(oxy-1,4-butanediyl) and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane is a specialized polyurethane prepolymer or polymer derived from a unique combination of a branched diol and isophorone diisocyanate (IPDI). This compound matters for its ability to impart specific performance characteristics such as enhanced flexibility, weatherability, and chemical resistance to final polyurethane products. It is primarily needed by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking high-performance, tailored polymer systems.

Application

• High-Performance Coatings: Used as a key resin component in automotive, industrial, and protective coatings requiring excellent durability and gloss retention.
• Specialty Adhesives & Sealants: Serves as a base polymer for formulating adhesives and sealants with strong bonding strength and resistance to environmental factors.
• Elastomers and Castable Urethanes: Employed in the production of flexible elastomers for gaskets, rollers, and industrial parts demanding toughness and resilience.
• Weatherable Finishes: Ideal for exterior wood and plastic coatings where resistance to UV light, moisture, and temperature fluctuations is critical.
• Chemical-Resistant Linings: Formulated into linings and topcoats for tanks, pipes, and flooring in aggressive chemical environments.
• Reactive Intermediate: Acts as a reactive intermediate for further chemical modification, enabling the creation of custom polymers with specific end-use properties.

Basic Information

Product Name	Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with α-hydro-ω-hydroxypoly(oxy-1,4-butanediyl) and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane
CAS No.	72765-49-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid; IPDI-based polyurethane prepolymer; Poly(tetramethylene ether glycol) terminated with IPDI and dimethylolpropionic acid derivative; Polyurethane resin based on isophorone diisocyanate and PTMEG; Aliphatic polyurethane prepolymer; DMPA-modified polyurethane dispersion precursor; CAS 72765-49-2.
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and residual monomer levels are strictly monitored. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for polyurethane prepolymers, typically between 15°C and 25°C. This material is hygroscopic (moisture-sensitive) and light-sensitive; exposure to atmospheric moisture or prolonged light can lead to premature reaction or degradation of properties.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Color (Gardner)	≤ 3
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Solid Content	Contact for details
Acid Value	Contact for details
Residual Monomer (IPDI)	< 0.5%
Identification (IR)	Conforms to standard

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