Description

Caprolactone-Pentaerythritol-TDI Copolymer is a specialized polyol-based polymer synthesized from ε-caprolactone, pentaerythritol, and toluene diisocyanate (TDI). This engineered copolymer is valued for its unique combination of flexibility, chemical resistance, and reactive hydroxyl functionality, making it a versatile building block for high-performance materials. It is essential for formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product durability and tailor material properties.

Application

• High-Performance Polyurethane Coatings: Serves as a key polyol component for producing flexible, chemical-resistant, and weatherable coatings for industrial, automotive, and marine applications.
• Specialty Adhesives and Sealants: Used to formulate adhesives with improved adhesion, flexibility, and resistance to environmental stress and solvents.
• Elastomer Synthesis: Acts as a macroinitiator or soft segment in the production of thermoplastic polyurethanes (TPU) and other elastomers requiring a balance of toughness and elasticity.
• Resin Modification: Employed to modify the properties of other polymer systems, introducing flexibility, impact resistance, and compatibility with various substrates.
• Crosslinking Agent: Functions as a reactive intermediate to create crosslinked polymer networks with enhanced mechanical strength and thermal stability.

Basic Information

Product Name	Caprolactone-Pentaerythritol-TDI Copolymer
CAS No.	70729-83-8
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly(ε-caprolactone-co-pentaerythritol-co-toluene diisocyanate); PCL-PETOL-TDI Copolymer; Caprolactone Pentaerythritol TDI Terpolymer; TDI-Caprolactone-Pentaerythritol Adduct; Polyol based on Caprolactone, Pentaerythritol and TDI; Hydroxyl-Terminated Caprolactone-Pentaerythritol-TDI Polymer; Polyurethane Polyol Precursor
EINECS	Contact for details

Quality Control

Our Caprolactone-Pentaerythritol-TDI Copolymer is manufactured under strict process controls to ensure batch-to-batch consistency and performance reliability. Quality is verified through a suite of analytical tests including hydroxyl value, acid value, viscosity, and color index. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This product is compatible with strong acids and organic solvents but should be stored separately from strong oxidizing agents and bases to prevent unintended reactions. Ensure containers are kept tightly sealed to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (cPs)	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.