Description

2H-Azepin-2-One, Hexahydro-, Polymer With 2-(2-Ethoxyethoxy)Ethanol, 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol And 1,1'-Methylenebis[4-Isocyanatobenzene] is a specialized polyurethane prepolymer or resin derived from caprolactam, a polyol blend, and MDI (methylene diphenyl diisocyanate). This engineered polymer is valued for its ability to impart enhanced flexibility, chemical resistance, and adhesion properties in formulated coatings and adhesives. It is primarily sought by manufacturers in the protective coatings, industrial adhesives, and specialty elastomers sectors seeking high-performance material solutions.

Application

• High-performance industrial and protective coatings for metal, concrete, and plastic substrates.
• Flexible adhesives and sealants requiring strong bonding and environmental resistance.
• Elastomeric components in automotive, machinery, or composite materials.
• Modifier for other polymer systems to improve impact resistance and durability.
• Potting and encapsulation compounds for electrical or electronic applications.
• Binder in advanced composite materials and fiber-reinforced plastics.

Basic Information

Product Name	2H-Azepin-2-One, Hexahydro-, Polymer With 2-(2-Ethoxyethoxy)Ethanol, 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol And 1,1'-Methylenebis[4-Isocyanatobenzene]
CAS No.	72230-99-0
Molecular Formula	Polymeric Substance (Contact for details)
Molecular Weight	Polymeric Substance (Contact for details)
Synonyms	Caprolactam-MDI-Polyol Polymer; Polyurethane Prepolymer based on Caprolactam; MDI-Caprolactam Adduct; Poly(urethane-co-caprolactam); Polyol-modified Polyurethane Resin; Isocyanate-terminated Polycaprolactam Prepolymer; 1,1'-Methylenebis[4-isocyanatobenzene] polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 2-(2-ethoxyethoxy)ethanol and hexahydro-2H-azepin-2-one
EINECS	Contact for details

Quality Control

Our production of this polymer adheres to strict batch-to-batch consistency protocols. Quality is verified through parameters including isocyanate (NCO) content, viscosity, solids content, and color. A Certificate of Analysis (COA) detailing specific lot results is provided with every shipment to ensure it meets your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep containers tightly sealed when not in use to prevent moisture absorption and premature reaction.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 3
NCO Content	Contact for details
Viscosity (at 25°C)	Contact for details
Solids Content	Contact for details
Specific Gravity	~1.05 - 1.15

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