Description

4,4'-Benzylidenebis(6-Methyl-m-Phenylene) Tetraisocyanate is a specialized aromatic polyisocyanate monomer. This compound is valued for its high functionality and reactivity, serving as a critical building block in the synthesis of advanced polymers. It is primarily sought by manufacturers in the polyurethane, coatings, and specialty adhesives industries for developing high-performance materials with enhanced thermal and mechanical properties.

Application

• As a key cross-linking agent in the formulation of high-performance polyurethane coatings and elastomers.
• In the synthesis of specialized polyurethane adhesives and sealants requiring excellent chemical resistance.
• As a monomer for producing advanced thermosetting resins used in composite materials.
• In the manufacture of specialty inks and binders for industrial applications.
• For research and development of novel polymer architectures in academic and industrial R&D laboratories.
• As a precursor in the production of flame-retardant and thermally stable polymers.

Basic Information

Product Name	4,4'-Benzylidenebis(6-Methyl-m-Phenylene) Tetraisocyanate
CAS No.	28886-07-9
Molecular Formula	C29H20N4O4
Molecular Weight	488.50 g/mol
Synonyms	Benzylidenebis(6-methyl-m-phenylene) tetraisocyanate; Tetraisocyanatobenzylidene-bis(6-methyl-m-phenylene); 1,1'-Methylenebis(3-isocyanato-2,6-dimethylbenzene); Bis(3-isocyanato-2,6-dimethylphenyl)methane tetraisocyanate; 4,4'-Methylenebis(6-methyl-m-phenylene isocyanate); Tetraisocyanato-diphenylmethane derivative; BMTI (abbreviation); Desmodur® R (related trade name series)
EINECS	Contact for details

Quality Control

Our production of 4,4'-Benzylidenebis(6-Methyl-m-Phenylene) Tetraisocyanate adheres to stringent quality protocols to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, purity profiling, and impurity identification. A Certificate of Analysis (COA) documenting all critical parameters is available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
NCO Content	Contact for details
Hydrolyzable Chloride	≤ 0.1%
Melting Point	Contact for details
Moisture (KF)	≤ 0.1%

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