474003-15-1

Basic information

• Product Name: 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-biphenyltetracarboxylic acid dianhydride
• Synonyms: 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-biphenyltetracarboxylic acid dianhydride
• CAS NO: 474003-15-1
• Molecular Weight: 558.631
• Mol File: 474003-15-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-biphenyltetracarboxylic acid dianhydride(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-biphenyltetracarboxylic acid dianhydride(474003-15-1)
• EPA Substance Registry System: 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-biphenyltetracarboxylic acid dianhydride(474003-15-1)

Safety Data

• Hazardous Substances Data: 474003-15-1(Hazardous Substances Data)

Upstream product

• 474003-06-0 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-tetramethylbiphenyl 
• 211434-29-6 2,2'-dibromo-4,4',5,5'-tetramethyl-1,1'-biphenyl 
• 123324-71-0 p-tert-butylphenylboronic acid 
• 583-71-1 4-bromo-o-xylene 
• 4920-95-0 3,4,3',4'-Tetramethylbiphenyl 
• 3972-65-4 1-bromo-4-tert-butylbenzene 
• 474003-11-7 2,2'-bis(4''-tert-butylphenyl)-4,4',5,5'-biphenyltetracarboxylic acid 

Relevant articles and documents

Synthesis and characterization of highly soluble and oxygen permeable new polyimides bearing a noncoplanar twisted biphenyl unit containing tert-butylphenyl or trimethylsilyl phenyl groups

The two new dianhydrides, 2,2′-bis(4″-tert-butylphenyl)-4,4′,5,5′-biphenyltetracar boxylic dianhydride (BBBPAn) and 2,2′-bis(4″-trimethylsilylphenyl)-4,4′,5,5′-biphenyltetr acarboxylic dianhydride (BTSBPAn), composed of a noncoplanar twisted biphenyl unit containing tert-butylphenyl or trimethylsilyphenyl groups were prepared. Two series of new organosoluble polyimides were prepared from the dianhydride and aromatic diamines by the conventional polyamide acid reaction followed by chemical imidization as well as high-temperature one-step polymerization. The structures of polymers were confirmed by various spectroscopic techniques. The weight-average molecular weight and polydispersities of resulting polymers were in the ranges 60 400-332 400 and 1.87-3.51, respectively. The polyimides showed good solubility in various organic solvents such as chloroform and THF. The polyimides exhibited 5% weight loss at 540-550°C in nitrogen as measured by thermogravimetric analysis. The polyimides showed high Tg's and good mechanical properties. The oxygen permeability coefficient (PO2) and permselectivity of oxygen to nitrogen (PO2/PN2) of the films were in the ranges 31-110 barrer and 2.8-4.3, respectively.