Description

1,3-Isobenzofurandione, Hexahydro-, Polymer With 2,2-Dimethyl-1,3-Propanediol, 1,6-Hexanediol And 1,1'-Methylenebis[4-Isocyanatocyclohexane] is a high-performance, aliphatic polyurethane prepolymer derived from a cycloaliphatic diisocyanate and a blend of polyols, including a hydrogenated phthalic anhydride derivative. This chemical structure provides exceptional weatherability, UV resistance, and color stability, making it a critical component for demanding exterior and high-clarity applications. It is primarily utilized by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking durable, non-yellowing performance. The CAS number for this compound is 125302-17-2.

Application

• High-Performance Coatings: Formulation of automotive clear coats, industrial maintenance coatings, and architectural finishes requiring superior gloss retention and resistance to yellowing from UV exposure.
• Elastomers and Sealants: Production of flexible, durable elastomers for gaskets, rollers, and weather-resistant sealants in construction and automotive applications.
• Adhesives: Used in structural and laminating adhesives where clarity, toughness, and environmental stability are paramount.
• Optical and Electronic Encapsulants: Suitable for potting and encapsulation compounds in LED and electronic components due to its clarity and stability.
• Marine and Aerospace Coatings: Provides excellent hydrolytic stability and corrosion resistance for protective coatings in harsh environments.
• Plastic Coatings and Inks: Serves as a binder for coatings on plastics and in high-quality printing inks that demand adhesion and flexibility.

Basic Information

Product Name	1,3-Isobenzofurandione, Hexahydro-, Polymer With 2,2-Dimethyl-1,3-Propanediol, 1,6-Hexanediol And 1,1'-Methylenebis[4-Isocyanatocyclohexane]
CAS No.	125302-17-2
Molecular Formula	Polymeric Material (Contact for details)
Molecular Weight	Polymeric Material (Contact for details)
Synonyms	Aliphatic Polyurethane Prepolymer based on H12MDI; Hydrogenated Phthalic Anhydride/Neopentyl Glycol/Hexanediol/H12MDI Polymer; Polyurethane Resin, aliphatic, non-yellowing; H12MDI Polyurethane Prepolymer; Cycloaliphatic Polyurethane Prepolymer; Hexahydrophthalic Anhydride-NPG-HDO-H12MDI Copolymer; UV-stable Polyurethane Resin
EINECS	Contact for details

Quality Control

Our production of this aliphatic polyurethane prepolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance. Key parameters such as NCO content, viscosity, and color (APHA/Hazen) are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance specifications is provided with every shipment to support your quality assurance protocols.

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 (59°F and 77°F). Keep away from heat, sparks, and open flame. Due to its reactive isocyanate groups, protect from moisture and atmospheric humidity to prevent premature curing or gelation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Color (APHA/Hazen)	≤ 100 max
Solid Content	Contact for details
Identification (IR)	Conforms to standard

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