Description

1,4-Butanediol, Polymer With 1,1'-Methylenebis(4-Isocyanatobenzene) (9Ci) is a polyurethane prepolymer or oligomer derived from the reaction of 1,4-butanediol (BDO) and methylene diphenyl diisocyanate (MDI). This specialized polymer is valued for its role as a key intermediate in the synthesis of high-performance polyurethane elastomers, coatings, and adhesives. It is primarily sought by manufacturers in the polyurethane, specialty chemical, and advanced materials industries seeking to enhance product durability, flexibility, and chemical resistance.

Application

• Polyurethane Elastomer Production: Serves as a crucial prepolymer for manufacturing high-performance cast elastomers with excellent mechanical properties.
• Specialty Coatings and Sealants: Used as a building block in formulating durable, chemical-resistant, and flexible protective coatings and sealants.
• Adhesive and Binder Systems: Acts as a reactive intermediate in the production of high-strength polyurethane adhesives for industrial bonding applications.
• Thermoplastic Polyurethane (TPU) Modification: Employed to modify and tailor the properties of TPUs, influencing hardness, elasticity, and processing characteristics.
• Composite Material Manufacturing: Utilized in the production of fiber-reinforced composites and other advanced material systems requiring a robust polymer matrix.
• R&D and Chemical Synthesis: Serves as a standardized intermediate for research and development of novel polyurethane formulations and specialty polymers.

Basic Information

Product Name	1,4-Butanediol, Polymer With 1,1'-Methylenebis(4-Isocyanatobenzene) (9Ci)
CAS No.	25805-16-7
Molecular Formula	(C15H10N2O2 • C4H10O2)x
Molecular Weight	Polymer - Variable
Synonyms	Poly(oxy-1,4-butanediyloxycarbonylimino-1,4-phenylenemethylene-1,4-phenylenecarbonylimino); MDI-BDO Prepolymer; 4,4'-MDI/BDO Prepolymer; Polyurethane Prepolymer from MDI and 1,4-Butanediol; 1,1'-Methylenebis(4-isocyanatobenzene) polymer with 1,4-butanediol; Oligomeric MDI-BDO; Isocyanate-terminated polyurethane prepolymer (MDI/BDO based)
EINECS	Contact for details

Quality Control

Our 1,4-Butanediol, Polymer With 1,1'-Methylenebis(4-Isocyanatobenzene) (9Ci) is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent composition, isocyanate (NCO) content, viscosity, and purity meet defined specifications. Certificates of Analysis (COA) detailing key parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area. This material is hygroscopic (moisture-sensitive) and must be protected from atmospheric moisture to prevent premature reaction and property degradation. Recommended storage temperature is 15-25°C. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms
Isocyanate (NCO) Content	As per grade (e.g., 5-15%)
Viscosity @ 25°C	As per grade
Specific Gravity	As per grade
Moisture Content	< 0.05%

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