Description

2,4'-Diisocyanato[1,1'-Oxybisbenzene] is a specialized aromatic diisocyanate monomer, a key building block in advanced polymer synthesis. Its value lies in its ability to impart unique thermal and mechanical properties to the resulting polyurethane and polyurea materials. This compound is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for research and development of high-performance specialty polymers.

Application

• Polyurethane Elastomers: Used as a hard segment component to create materials with excellent abrasion resistance, toughness, and dynamic properties for industrial wheels, rollers, and gaskets.
• High-Performance Coatings: Serves as a crosslinker in formulations for protective industrial, marine, and automotive coatings, offering enhanced chemical and weathering resistance.
• Specialty Adhesives & Sealants: A critical raw material for formulating adhesives and sealants that require strong bonding, flexibility, and durability under demanding conditions.
• Polyurea Spray Systems: A key reactive component in fast-curing polyurea systems used for linings, tank coatings, and waterproofing membranes.
• Thermoplastic Polyurethanes (TPU): Employed in the synthesis of TPUs for applications in wire and cable jacketing, hoses, and films.
• Chemical Intermediate: Used in organic synthesis to introduce urethane and urea linkages for advanced materials research and specialty chemical production.

Basic Information

Product Name	2,4'-Diisocyanato[1,1'-Oxybisbenzene]
CAS No.	17022-11-6
Molecular Formula	C15H10N2O3
Molecular Weight	266.25 g/mol
Synonyms	2,4'-Diphenylmethane Diisocyanate (2,4'-MDI); 2,4'-Methylenediphenyl Diisocyanate; 2,4'-MDI; 4-Isocyanatophenyl 2-Isocyanatophenyl Ether; 1,1'-Oxybis[4-isocyanatobenzene]; Bis(4-isocyanatophenyl) Ether (isomer); 4,4'-Oxybis(phenyl isocyanate) (isomer); Isonate® 2,4'-MDI (trade name)
EINECS	Contact for details

Quality Control

Our 2,4'-Diisocyanato[1,1'-Oxybisbenzene] is produced and tested under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, isocyanate content, and impurity profiles. A Certificate of Analysis (COA) detailing key parameters is provided with every shipment to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area under an inert atmosphere (e.g., nitrogen or dry air) to prevent oxidation and moisture absorption. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature is 15-25°C. Isolate from strong acids, bases, amines, alcohols, and moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 99.0 %
Purity (HPLC)	≥ 98.5 %
Hydrolyzable Chloride	≤ 50 ppm
Acidity (as HCl)	≤ 0.01 %
Specific Gravity (25°C)	1.22 - 1.24
Viscosity (25°C)	Contact for details

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