Description

1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Butanediol, Hexanedioic Acid And 1,1'-Methylenebis[4-Isocyanatocyclohexane] is a high-performance, aliphatic polyurethane prepolymer or resin derived from isophthalic acid, adipic acid, butanediol, and a hydrogenated methylene diphenyl diisocyanate (H12MDI) derivative. This material matters for its excellent weatherability, hydrolysis resistance, and mechanical properties, making it a superior choice for demanding applications where yellowing and degradation are concerns. It is primarily needed by formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking durable, light-stable polyurethane systems.

Application

• High-Performance Coatings: Formulation of automotive clear coats, industrial maintenance coatings, and marine finishes requiring exceptional gloss retention and UV resistance.
• 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 strong bonding, flexibility, and environmental stability are critical.
• Synthetic Leather and Textile Coatings: As a key resin for producing high-quality, non-yellowing synthetic leather (PU leather) and functional textile coatings.
• Optical and Electronic Encapsulants: Potential use in potting and encapsulation compounds for LEDs and sensitive electronic components due to its clarity and stability.
• Medical Device Coatings: Suitable for developing biocompatible, stable coatings on certain medical devices, subject to appropriate regulatory compliance.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Butanediol, Hexanedioic Acid And 1,1'-Methylenebis[4-Isocyanatocyclohexane]
CAS No.	68698-87-3
Molecular Formula	(C8H6O4·C4H10O2·C6H10O4·C15H22N2O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Polyurethane resin based on H12MDI, isophthalic acid, adipic acid, and 1,4-butanediol; Aliphatic polyester polyurethane prepolymer; H12MDI/IPA/AA/BDO polyester polyol copolymer; Hydrogenated MDI-based polyurethane polymer; Light-stable polyurethane resin; Copolymer of isophthalic acid, adipic acid, butanediol and methylenebis(4-cyclohexylisocyanate); PU resin CAS 68698-87-3
EINECS	Contact for details

Quality Control

Our production of this polyurethane polymer adheres to strict quality management systems, ensuring batch-to-batch consistency for your formulations. Key parameters such as NCO content, viscosity, hydroxyl value, and acid number are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing specific grade specifications is provided with each shipment to guarantee compliance with your technical requirements.

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 heat, sparks, and open flame. Moisture-sensitive; keep container tightly sealed when not in use to prevent reaction with atmospheric humidity. Separate from strong oxidizers, acids, bases, and amines.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Color (Gardner)	≤ 2
Moisture Content	≤ 0.05%
Identification (IR)	Conforms

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