Description

2,2'-p-Phenyldi(5-Aminobenzoxazole) is a high-performance heterocyclic aromatic diamine monomer characterized by its rigid, extended molecular structure. This compound matters for its role as a critical building block in the synthesis of advanced polymers, imparting exceptional thermal stability, mechanical strength, and chemical resistance to the final materials. It is primarily needed by R&D chemists and material scientists in the advanced polymer, high-performance fiber, and specialty coatings industries seeking to develop next-generation materials for demanding applications.

Application

• High-Performance Polymer Synthesis: A key monomer for producing polybenzoxazoles (PBO), polyamides, and polyimides with ultra-high thermal and mechanical properties.
• Advanced Composite Materials: Used in the manufacture of matrices for aerospace, automotive, and military composites requiring extreme durability.
• Heat-Resistant Fibers: Serves as a precursor for fibers like Zylon® (PBO fiber), known for exceptional flame resistance and strength.
• Specialty Coatings & Adhesives: Incorporated into formulations for coatings that must withstand high temperatures and corrosive environments.
• Electronic Materials: Used in the development of high-temperature dielectric films, flexible printed circuit boards, and encapsulants.
• Chemical Research & Development: An important intermediate for synthesizing novel organic compounds and ligands for catalysis.

Basic Information

Product Name	2,2'-p-Phenyldi(5-Aminobenzoxazole)
CAS No.	13752-53-9
Molecular Formula	C₂₀H₁₄N₄O₂
Molecular Weight	342.35 g/mol
Synonyms	5,5'-(1,4-Phenylene)bis(2-aminobenzoxazole); 2,2'-(1,4-Phenylene)bis(5-aminobenzoxazole); 1,4-Bis(5-amino-2-benzoxazolyl)benzene; PBO Diamine; AB-PBO; Benzoxazole Diamine Monomer; 4,4'-(Benzoxazole-2,5-diyl)dianiline (alternative representation); CAS 13752-53-9
EINECS	Contact for details

Quality Control

Our 2,2'-p-Phenyldi(5-Aminobenzoxazole) is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical techniques including HPLC, NMR, and elemental analysis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment, ensuring it meets the stringent requirements for advanced polymer research and production.

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 material is moisture-sensitive (hygroscopic) and should be handled under dry conditions to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm

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