Description

2,4-Dioxo-1,3-Diazetidine-1,3-Diylbis(p-Phenylenemethylene-o-Phenylene) Diisocyanate is a specialized, high-performance aromatic diisocyanate monomer with a unique bridged structure. This compound matters for its ability to impart enhanced thermal stability, mechanical strength, and chemical resistance when incorporated into advanced polymer systems. It is primarily needed by R&D chemists and formulators in the polyurethane, high-performance coatings, and specialty adhesives industries seeking to develop next-generation materials.

Application

• High-Performance Polyurethane Elastomers: Serves as a key building block for elastomers requiring exceptional toughness, abrasion resistance, and low-temperature flexibility.
• Advanced Coatings and Paints: Used in formulating industrial, automotive, and aerospace coatings that demand superior durability, chemical resistance, and weatherability.
• Specialty Adhesives and Sealants: Imparts high bond strength and environmental resistance in adhesives for demanding applications in construction, electronics, and composites.
• Polymer Modification and Crosslinking: Acts as a crosslinking agent or chain extender to enhance the properties of existing polymers, improving heat distortion temperature and dimensional stability.
• Composite Materials: Incorporated into the matrix of fiber-reinforced composites for automotive and sporting goods, contributing to lightweight yet strong structures.
• R&D and Specialty Chemical Synthesis: Utilized in academic and industrial research for developing novel polymers with tailored properties for niche applications.

Basic Information

Product Name	2,4-Dioxo-1,3-Diazetidine-1,3-Diylbis(p-Phenylenemethylene-o-Phenylene) Diisocyanate
CAS No.	94158-57-3
Molecular Formula	C30H20N4O4
Molecular Weight	500.51 g/mol
Synonyms	1,3-Bis(4-isocyanatobenzyl)-2,4-dioxo-1,3-diazetidine; 1,3-Diisocyanatomethyl-2,4-dioxo-1,3-diazacyclobutane benzene derivative; Bridged Aromatic Diisocyanate; DDI (Diazetidine Diisocyanate); p-Xylylene diisocyanate-diazetidinedione adduct; 2,4-Dioxo-1,3-diazetidine-1,3-diylbis(methylene-p-phenylene) diisocyanate; Bis(4-isocyanatobenzyl) 2,4-dioxo-1,3-diazetidine-1,3-dicarboxylate (related structure)
EINECS	Contact for details

Quality Control

Our 2,4-Dioxo-1,3-Diazetidine-1,3-Diylbis(p-Phenylenemethylene-o-Phenylene) Diisocyanate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by HPLC and titration, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, isocyanate content, and impurity profiles are available upon request to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen or argon) to prevent degradation and maintain reactivity. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (NCO Content)	≥ 98.0 %
Purity (HPLC)	≥ 97.0 %
Melting Point	Contact for details
Moisture (Karl Fischer)	≤ 0.1 %
Solubility	Soluble in common aprotic solvents (DMF, DMSO, NMP)

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