1,1'-Biphenyl-2,3,3',4'-tetracarboxylic acid synthesis
- Product Name:1,1'-Biphenyl-2,3,3',4'-tetracarboxylic acid
- CAS Number:36978-40-2
- Molecular formula:C16H10O8
- Molecular Weight:330.25
36978-36-6
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36978-40-2
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Yield:36978-40-2 100%
Reaction Conditions:
with methanol;water at 200; under 11251.1 - 15001.5 Torr; for 48 h;
Steps:
1
,000 liters of the 99.5% pure a-BPTT obtained and 3,000 liters of pure water were mixed in a reaction vessel and a hydrolysis reaction was carried out at a reaction temperature of 200° C. at a pressure of 1.5 to 2.0 MPa for 48 hours with pure water being fed at a rate of 300 L/H. The hydrolyzate mixture obtained was cooled to 50° C. and seed crystals were added to give rise to crystallization. The mixture containing the crystals formed was sent to a centrifuge and centrifugation was carried out at 40° C. to separate the crystals. The a-BPTA crystals obtained had a purity of 99.7% and a yield of 100%.
References:
US2006/247445,2006,A1 Location in patent:Page/Page column 6
5006-39-3
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36978-40-2
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87-59-2
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576-23-8
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$16.00/25g
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183158-34-1
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36978-40-2
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