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

Upstream-Materialien

Downstream Produkte

2,3,3,4-biphenyl tetracarboxylic dianhydride Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Firmenname	Telefon	E-Mail	Land	Produktkatalog	Edge Rate
Heynova (Shanghai) New Material Technology CO., Ltd	+86-17821320848; +8617821320848	zoe@heynovachem.com	China	179	58
Shanghai Daeyeon Chemicals Co., Ltd	021-64478606 +8615900664856	daeyeon001@vip.163.com	China	2062	58
Chengdu Yuanda Chemical Co., Ltd	28-85356300 +8618980937689	sales@ydachem.com	CHINA	94	58
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.	+86-18222266713 +86-18222272656	sales9@chinatechem.com	China	65	58
Sholon Chem-Tech Co.,Ltd	+8619901505185	amy.yang@sholonchem.com	China	528	58
Mascot I.E.Co .,Ltd.	+86-0519-85010339 +8613584504415	info@mascotchem.com	China	327	58
SHANGHAI KEAN TECHNOLOGY CO., LTD.	+8613817748580	cooperation@kean-chem.com	China	40066	58
Hebei Mujin Biotechnology Co.,Ltd	+86 13288715578 +8613288715578	sales@hbmojin.com	China	12831	58
Hebei Weibang Biotechnology Co., Ltd	+8617732866630	bess@weibangbio.com	China	18148	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20267	58

36978-41-3()Verwandte Suche:

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