17200-77-0

Basic information

• Product Name: 2,6-(4,4'-AMinophenyl) benzobisoxazole
• Synonyms: 2,6-(4,4'-AMinophenyl) benzobisoxazole;4,4'-(Benzo[1,2-d:5,4-d']bis(oxazole)-2,6-diyl)dianiline
• CAS NO: 17200-77-0
• Molecular Formula: C20H14N4O2
• Molecular Weight: 342.35076
• Mol File: 17200-77-0.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2,6-(4,4'-AMinophenyl) benzobisoxazole(CAS DataBase Reference)
• NIST Chemistry Reference: 2,6-(4,4'-AMinophenyl) benzobisoxazole(17200-77-0)
• EPA Substance Registry System: 2,6-(4,4'-AMinophenyl) benzobisoxazole(17200-77-0)

Safety Data

• Hazardous Substances Data: 17200-77-0(Hazardous Substances Data)

Usage

General Description

2,6-(4,4'-Aminophenyl) benzobisoxazole is a chemical compound that is also known as PBO or p-Phenylenediamine bis(2-benzoxazolyl) oxide. It is commonly used as a fluorescent whitening agent in the textile industry to improve the brightness and appearance of fabrics. Additionally, PBO has applications in the manufacturing of plastics, coatings, and paper, where it functions as an optical brightener to enhance the whiteness and color of the materials. 2,6-(4,4'-AMinophenyl) benzobisoxazole is known for its high chemical stability and resistance to heat, making it a valuable additive in a range of industrial products. However, it is important to handle PBO with caution, as it can be harmful if ingested or inhaled and may cause irritation to the skin and eyes.

Upstream product

• 77316-48-4 2,6-bis-(4-nitro-phenyl)-benzo[1,2-d;5,4-d']bisoxazole 
• 16523-31-2 4,6-diaminoresorcin dihydrochloride 
• 150-13-0 4-amino-benzoic acid 

Downstream Products

• 29210-23-9 N,N'-(4,4'-benzo[1,2-d;5,4-d']bisoxazole-2,6-diyl-diphenyl)-bis-phthalamic acid 

Relevant articles and documents

Benzoxazole ionic compound, PBO fiber emulsion sizing agent containing benzoxazole ionic compound and preparation method of PBO fiber emulsion sizing agent

The invention discloses a benzoxazole ionic compound shown as a formula X, a sizing agent containing the compound, and a preparation method and application of the sizing agent. The benzoxazole ionic compound shown in the formula X is similar to the PBO fiber in chemical structure, the compatibility of the sizing agent and the PBO fiber can be improved, and the preparation process is simple and easy to operate. According to the sizing agent, the problems that an existing sizing agent is poor in compatibility with the PBO fiber, a large number of flammable and combustible organic solvents need to be used in the sizing agent, and nano reinforcements in the sizing agent are difficult to effectively cover the surfaces of the fibers are solved. The sizing agent takes water as a solvent, is greenand efficient, is simple and environment-friendly to prepare, and not only can keep the original tensile strength of PBO fibers, but also can remarkably improve the IFSS of the composite material.

Effect of multiple H-bonding on the properties of polyimides containing the rigid rod groups

To investigate the influence of hydrogen bonding on the properties of polyimides (PIs) containing rigid rod-like groups, five symmetrical diamines containing benzimidazole, benzoxazole, and hydroxy group were synthesized, and then a series of PIs were prepared. Results showed that hydroxyl-containing poly(benzoxazole imide)s possess higher glass transition temperature (Tg) and dimensional stabilities than their corresponding poly(benzoxazole imide)s. Moreover, the corresponding poly(benzimidazole imide)s presented the best performances, such as the highest Tg, the highest char yield and the highest dimensional stabilities. The influence of hydrogen bonding of benzimidazole on the properties of PIs was stronger than that of hydroxyl groups. Hydroxyl-containing poly(benzoxazole imide)s were formed in crosslinking structures after heat treatment at 400 °C.