Description

Hdi/Ppg/Polycaprolactone Crosspolymer is a specialized, high-performance polymer crosslinker derived from hexamethylene diisocyanate (HDI), polypropylene glycol (PPG), and polycaprolactone. This compound matters for its unique ability to impart enhanced durability, flexibility, and chemical resistance to polyurethane and other polymer systems. Industries such as high-performance coatings, advanced adhesives, and specialty elastomers need this material to develop products with superior mechanical properties and longevity under demanding conditions.

Application

• As a key crosslinking agent in the formulation of high-solids and two-component polyurethane (2K-PU) coatings for automotive, industrial, and marine applications.
• Enhancing the toughness and hydrolytic stability of flexible adhesives and sealants used in construction and automotive assembly.
• Serving as a modifier in thermoplastic polyurethane (TPU) and elastomer production to improve abrasion resistance and low-temperature flexibility.
• Utilized in the synthesis of specialty polymers for medical device coatings, requiring biocompatibility and specific mechanical profiles.
• Formulation of durable binders and matrices for composite materials in aerospace and wind energy sectors.
• Development of advanced, weather-resistant finishes for architectural and protective coatings.

Basic Information

Product Name	Hdi/Ppg/Polycaprolactone Crosspolymer
CAS No.	302791-95-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	HDI-PPG-Polycaprolactone Crosspolymer; Hexamethylene Diisocyanate/Propylene Glycol/Polycaprolactone Crosspolymer; Polycaprolactone-PPG-HDI Terpolymer; Polyurethane Crosspolymer; HDI-based Polyol Crosslinker; Aliphatic Polyurethane Prepolymer; Poly(hexamethylene carbonate-co-propylene carbonate) crosslinked; Isocyanate-terminated Polycaprolactone-PPG Copolymer
EINECS	Contact for details

Quality Control

Our Hdi/Ppg/Polycaprolactone Crosspolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in functionality, including isocyanate content, viscosity, and hydroxyl value. Certificates of Analysis (COA) detailing purity and key specifications are available upon request to support your quality assurance and regulatory compliance 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). Keep away from strong alkalis and organic solvents. Due to its reactive isocyanate groups, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature polymerization.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (NCO Content)	Contact for details
Viscosity @ 25°C	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Water Content (KF)	≤ 0.05%
Specific Gravity @ 25°C	Contact for details

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