Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraon

Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraon Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-Sätze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.

Chemische Eigenschaften

White to light yellow solid

Verwenden

cyclobutane-1,2,3,4-tetracarboxylic dianhydride and diamine monomer are used for preparation a polyimide (PI), the type of polyimide has excellent electrical characteristics and optical type, with the material prepared the PI film, in addition to having a higher rate cast visible outside, and can withstand high temperatures thirty-four Baidu. Its performance is very good, is the preparation of a liquid crystal display with an ideal material for the film.

synthetische

Preparation of 1,2,3,4- cyclobutanetetracarboxylic acid dianhydride (CBDA)To a 2L quartz glass photoreactor equipped with sixteen UV lamps (300nm) , a stirrer and a cooler were attached and 250ml of ethyl acetate and 100g of maleic anhydride were added thereto followed by stirring for complete mixing. To avoid an excessive temperature increase, an air-cooling type cooler was first run and then UV light was illuminated for a photoreaction for 24h with stirring so as not to have the reactants adhered to the reactor walls. As a result, 71g of white solid was obtained. After the filtration, the white solid was dried for 24h in a vacuum dryer at 60°C Thus-obtained solid was then added to acetic anhydride, dissolved therein and slowly heated to 150°C followed by the reaction for 24h . Hot reaction solution was filtered through a filter paper to remove impurities and kept in a freezer at the temperature of 0°C or less for recrystallization for 24h to obtain a yellow solid. Thus-obtained solid was filtered and washed three times with 1,4-dioxane to remove acetic anhydride, and then dried in a vacuum oven at 60°C for 48h to obtain 64g of 1, 2, 3, 4 -cyclobutane tetracarboxylic acid dianhydride (CBDA) .

Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraon Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte

Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraon Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Firmenname	Telefon	E-Mail	Land	Produktkatalog	Edge Rate
Shanghai Daeyeon Chemicals Co., Ltd	021-64478606 +8615900664856	daeyeon001@vip.163.com	China	2062	58
Heynova (Shanghai) New Material Technology CO., Ltd	+86-17821320848	zoe@heynovachem.com	China	431	58
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.	+8618222493702	sales8@chinatechem.com	China	61	58
Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12456	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	7845	58
Ouhuang Engineering Materials (Hubei) Co., Ltd	+8617702722807	admin@hbouhuang.com	China	2259	58
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	15928	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1807	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58

4415-87-6(Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraon)Verwandte Suche:

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• 3a,3b,6a,6b-Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone
• 4,9-Dioxatricyclo[5.3.0.02,6]decane-3,5,8,10-tetrone
• Cyclobutane 1,2,3,4-tetracarboxylic acid 1,2:3,4-dianhydride
• Cyclobutane-1,2,3,4-tetracarboxylic dianhydride ,98%
• Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride (CBDA)
• Cyclobutane-1,2,3,4-tetracarboxylic
• 1,2,3,4-Cyclobutanetetracarboxylic Dianhydride (purified by sublimation)
• Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone,tetrahydro-
• Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6(3aH,3bH,6aH,6bH)
• -tetraone
• CYCLOBUTANE-1,2,3,4-TETRACARBOXYLIC DIANHYDRIDE
• Maleic anhydride cyclic dimer.
• Cyclobutanetetracarboxylic Dianhydride
• 1,2,3,4-cyclobutanetetracarboxylic acid dianhydride
• 1,2,3,4-Cyclobutanetetracarboxylic 1,2:3,4-dianhydride
• Cyclobutanetetracarboxylic acid dianhydride
• 1,2,3,4-Cyclobutanetetracarboxylic acid 1,2:3,4-dianhydride
• 1,2,3,4-Cyclobutanetetracarboxylic acid-1,2:3,4-dianhydride
• 3a,3b,6a,6b-Tetrahydrocyclobuta[1,2-c:3,4-c']difuran 1,3,4,6-tetrone
• tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraone
• 1,2,3,4-CYCLOBUTANETETRACARBOXYLIC DIAN&
• Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone
• 1,2,3,4-Cyclobutanetetracarboxylic1,2:3,4-dianhydride,CBDA
• Cyclobutane-1,2,3,4-tetracarboxylic dianhydride (CBDA)
• 1,2,3,4-Cyclobutanetetracarboxylic Dianhydride >
• 1,2,3,4-Cyclobutanetetracarboxylic Dianhydride (purified by sublimation)>
• CYCLOBUTANE-1,2,3,4-TETRACARBOXYLIC DIANHYDRIDE(CBDA) 4415-87-6
• CBDA 1,2,3,4-Cyclobutanetetracarboxylic1 ,2,3,4-dianhydride
• 1,2,3,4-CYCLOBUTANETETRACARBOXYLIC DIANHYDRIDE
• Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride
• (CBDA) Cyclobutane-1,2,3,4-tetracarboxylic dianhydride
• Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone
• 1,2,3,4-butanetetracarboxylicdianhydride(CBDA)
• Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone
• 4415-87-6
• C8H4O6
• Organic Building Blocks
• Building Blocks
• Carbonyl Compounds
• Carboxylic Acid Anhydrides
• Fluorenes, etc. (reagent for high-performance polymer research)
• Functional Materials
• Reagent for High-Performance Polymer Research
• Carbonyl Compounds
• Carboxylic Acid Anhydrides
• Organic Building Blocks
• fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, Organic Building Blocks
• fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, pharmaceutical intermediates
• monomer