2,3,3,4-biphenyl tetracarboxylic dianhydride

Bezeichnung:2,3,3,4-biphenyl tetracarboxylic dianhydride

CAS-Nr36978-41-3

Englisch Name:2,3,3,4-biphenyl tetracarboxylic dianhydride

CBNumberCB9839416

SummenformelC16H6O6

Molgewicht294.22

MOL-Datei36978-41-3.mol

2,3,3,4-biphenyl tetracarboxylic dianhydride physikalisch-chemischer Eigenschaften

Schmelzpunkt	199 °C
Siedepunkt	609.3±48.0 °C(Predicted)
Dichte	1.625±0.06 g/cm3(Predicted)
storage temp.	Inert atmosphere,Room Temperature
Aggregatzustand	powder to crystal
Farbe	White to Almost white
InChI	InChI=1S/C16H6O6/c17-13-9-5-4-7(6-11(9)15(19)21-13)8-2-1-3-10-12(8)16(20)22-14(10)18/h1-6H
InChIKey	FYYYKXFEKMGYLZ-UHFFFAOYSA-N
SMILES	C1(=O)C2=C(C(C3C=CC4C(=O)OC(=O)C=4C=3)=CC=C2)C(=O)O1
CAS Datenbank	36978-41-3(CAS DataBase Reference)
EPA chemische Informationen	[4,5'-Biisobenzofuran]-1,1',3,3'-tetrone (36978-41-3)

Sicherheit

HS Code

2922498590

Gefahreninformationscode (GHS)

2,3,3,4-biphenyl tetracarboxylic dianhydride Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung
2,3,3,4-biphenyl tetracarboxylic dianhydride, also known as a-BPDA, is a high-performance polymer with excellent heat resistance, solvent resistance, radiation resistance, and impressive mechanical and dielectric properties. It holds great potential for applications across numerous industries and material fields.
Chemische Eigenschaften
White to Almost white powder to crystal.
Verwenden
2,3,3',4'-Biphenyltetracarboxylic dianhydride be used for the preparation of a polyimide material.
synthetische
The preparation of 2,3,3',4'-biphenyl tetracarboxylic dianhydride is as follows:In a 1000 ml three-necked flask, 18.3 g (0.1 mol) of 4-chlorophthalic anhydride and 18.3 g (0.1 mol) were added 3-chlorophthalic anhydride, 300 g of anisole as solvent, 0.13 g (0.001 mol) of nickel chloride as a catalyst, 0.198 g (0.001 mol) of C-1 as a catalyst ligand, and 0.03 g (0.0003 mol) of sodium bromide as a catalyst Auxiliary, 13 g (0.2 mol) of zinc powder was used as a reducing agent, and the reaction was stirred at 30 ° C for 8 hours under a nitrogen atmosphere. The reaction solution was filtered to remove insoluble solids in the reaction liquid. 300 g of methanol was added to the filtration mother liquor, and the product was precipitated, filtered, and dried to obtain 25.8 g of the product 2,3,3',4'-biphenyltetracarboxylic dianhydride, yield 87.7%.
Application
2,3,3,4-biphenyl tetracarboxylic dianhydride (a-BPDA) and polyamides (PAA) derived from p-phenylenediamine (PDA) or 4,4'-oxydiphenylamine (ODA) undergo thermal imidisation and can be used for the preparation of asymmetric biphenyl-type polyimides (PI). Compared to the semi-rigid s-BPDA/PDA, the a-BPDA/PDA polyimides have a significantly bent chain structure. However, a-BPDA/PDA films annealed at 350 °C show higher Tg than s-BPDA/PDA films prepared under the same conditions. a-BPDA-based PIs have unexpectedly high Tg values, which may be attributed to the cranked axial motion limiting conformational changes. The diimide synthesised from a-BPDA and cyclohexylamine displays long-lived luminescence of up to 1.3 s after UV irradiation.

2,3,3,4-biphenyl tetracarboxylic dianhydride Upstream-Materialien And Downstream Produkte

2,3,3,4-biphenyl tetracarboxylic dianhydride Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

36978-41-3, 2,3,3,4-biphenyl tetracarboxylic dianhydride Verwandte Suche:

Send Inquriy