133440-67-2

Basic information

• Product Name: 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer
• Synonyms: 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer;4-(5-aMino-6-hydroxylbenzoxazol-2-yl) benzoic acid salt
• CAS NO: 133440-67-2
• Molecular Formula: C14H10N2O4
• Molecular Weight: 270.2402
• Mol File: 133440-67-2.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer(CAS DataBase Reference)
• NIST Chemistry Reference: 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer(133440-67-2)
• EPA Substance Registry System: 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer(133440-67-2)

Safety Data

• Hazardous Substances Data: 133440-67-2(Hazardous Substances Data)

Usage

General Description

The chemical 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer is a synthetic polymer consisting of repeating units of the compound 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid. 4-(5-Amino-6-hydroxybenzoxazol-2-yl)benzoic acid homopolymer is a benzoxazole derivative with an amino group and a hydroxy group bonded to the benzoxazole ring. The homopolymer is likely to have high thermal stability, mechanical strength, and chemical resistance due to its benzoxazole backbone. It may have potential applications in various industries such as aerospace, electronics, and automotive for its heat resistance and flame retardant properties. Additionally, its functional groups may allow for further modification to tailor its properties for specific applications.

Upstream product

• 133554-24-2 methyl 4-(6-hydroxy-5-nitrobenzo[d]oxazol-2-yl)benzoate 
• 133532-53-3 4-(5-nitro-6-hydroxybenzoxazol-2-yl)benzoic acid 

Relevant articles and documents

4-(5-Amino-6-Hydroxybenzoxazol-2-YL) Ammonium Benzoate and Preparation Method and Use Thereof

Disclosed in the present invention are 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate shown in formula (I) and the preparation method and use thereof. The preparation method comprises: fully reacting 4-(5-amino-6-hydroxybenzoxazol-2-yl)benzoic acid shown in formula (II) or 4-(5-amino-6-hydroxybenzoxazol-2-yl)carboxamide benzoate, as a raw material, with ammonia in an aqueous solvent, and directly heating the obtained reaction liquid to remove excess ammonia, so as to obtain 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate. The mass of the 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate (ABAA) prepared in the present invention can reach a polymer grade (where the purity is above 99.5%, the content of metal ions is below 200 ppm, and containing no DMF polymerization inhibition impurities), and the 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate can be used as an AB type monomer for preparing PBO and modified PBO fibres, the resulting PBO having an intrinsic viscosity n of up to 38/dl/g, and the method has such features as ABAA being highly soluble in PPA, a fast polymerization speed, a short time of 2-4 h, a low temperature of 150° C., a high molecular weight of the polymer, fibres of excellent tensile property, being easy to industrialize, etc.