Description

2,4-Dioxo-1,3-Diazetidine-1,3-Diylbis[p-Phenylenemethylene-p-Phenylene] Diisocyanate is a specialized, high-performance aromatic diisocyanate monomer, CAS NO 17589-24-1, characterized by its rigid, extended molecular structure. This compound is engineered to impart exceptional thermal stability, chemical resistance, and mechanical strength to advanced polymer systems. It is a critical raw material for manufacturers in the polyurethane, coatings, and high-performance adhesives sectors seeking to develop products with superior durability under demanding conditions.

Application

• High-Performance Polyurethane Elastomers: Used as a chain extender or crosslinker to produce elastomers with enhanced thermal and hydrolytic stability for industrial seals, gaskets, and rollers.
• Specialty Coatings and Paints: A key component in formulating advanced polyurethane coatings that require excellent weatherability, abrasion resistance, and chemical protection for automotive, aerospace, and marine applications.
• Advanced Adhesives and Sealants: Imparts high strength and durability to structural adhesives used in construction, automotive assembly, and composite bonding.
• Thermoset Resins and Composites: Serves as a reactive monomer in the production of high-modulus, fiber-reinforced composite materials for the electronics and transportation industries.
• Polyimide and Polyamide Synthesis: Acts as a monomeric building block in the synthesis of high-temperature resistant polymers for specialized engineering plastics.

Basic Information

Item	Detail
Product Name	2,4-Dioxo-1,3-Diazetidine-1,3-Diylbis[p-Phenylenemethylene-p-Phenylene] Diisocyanate
CAS No.	17589-24-1
Molecular Formula	C30H20N4O6
Molecular Weight	532.51 g/mol
Synonyms	1,3-Bis(4-isocyanatobenzyl)-2,4-dioxo-1,3-diazetidine; 1,3-Bis(4-isocyanatobenzyl)-2,4-imidazolidinedione; 1,3-Bis(p-isocyanatobenzyl)hydantoin; Hydantoin-based diisocyanate; Bis(4-isocyanatobenzyl) hydantoin; HDI (Hydantoin Diisocyanate) analog; p-Xylylene diisocyanate hydantoin adduct
EINECS	Contact for details

Quality Control

Our production of 2,4-Dioxo-1,3-Diazetidine-1,3-Diylbis[p-Phenylenemethylene-p-Phenylene] Diisocyanate adheres to a stringent quality management system. Every batch is analyzed to ensure consistent purity, reactivity, and performance. Certificates of Analysis (COA) detailing key parameters such as isocyanate content, purity, and color are provided and traceable to each production lot, supporting your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen or dry air) to prevent reaction with atmospheric moisture, which can lead to polymerization or gelation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (NCO Content)	≥ 98.0 %
Purity (HPLC)	≥ 99.0 %
Melting Point	Contact for details
Color (APHA)	≤ 100
Moisture (Karl Fischer)	≤ 0.1 %

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