CAS: 2088-87-1; Naphthalene-1,2-Dicarboxylic Acid

上下游产品

tetrachloromethane 2-naphthoic peroxyanhydride benzothiophene-1,1-dioxide dimethyl acetylenedicarboxylatedimethyl 1,2-naphthalenedicarboxylate 2-phenyl-1H-benzo[e]isoindole-1,3(2H)-dione

📜二甲基萘置于sodium Dichromate体系中,用 水 用作溶剂,化学反应生成1,2-萘二甲酸
参考文献:分散介质中 1,8-萘二甲酸二钾的锌 (II) 催化汉克尔反应
标题:分散介质中 1,8-萘二甲酸二钾的锌 (II) 催化汉克尔反应
摘要:与没有分散介质的反应相比,1,8-萘二甲酸二钾在作为分散介质的萘中的汉克尔反应以更高的收率和更好的重现性得到了 2,6-萘二甲酸二钾 (1).详细研究了催化剂,特别是锌催化剂.锌催化剂的阴离子部分影响反应,卤化物阴离子对1的选择性形成有效.在锌催化剂中加入卤化钾也提高了1的收率.卤化物阴离子的催化活性依次增加; 氯-
Doi:10.1246/bcsj.62.786

专利信息

专利号:US-9957355-B2
优先权日:2013-06-12
标 题 :Device and method for synthesis of a polymer under separation of a gaseous substance
发明人：ZHU NING; STAMMER ACHIM; CLAUSS JOACHIM; KORY GAD
权利人:BASF SE
摘要:The invention relates to a device for synthesis of a polymer under separation of a gaseous substance. Said device comprises a reaction chamber ( 1 ), which has a top section ( 11 ), a middle section ( 12 ) and a bottom section ( 13 ), an inlet opening ( 2 ) which is arranged in the middle section ( 12 ), a first outlet opening ( 3 ) which is arranged in the bottom section ( 13 ), a second outlet opening ( 4 ) which is arranged in the top section ( 11 ), a first return opening ( 51 ), which is arranged in the bottom section ( 13 ), a second outlet opening ( 52 ), which is arranged under the top section ( 11 ), a distribution device ( 6 ), which is arranged between the top section ( 11 ) and the middle section ( 12 ), and a removal device ( 7 ) which is arranged to be movable along the top section ( 11 ). The invention further relates to a method for synthesis of a polymer which can be carried out in said device.

专利号:US-5869543-A
优先权日:1996-10-22
标题:Process for the synthesis of polyethylene carboxylate from polyethylene carboxylate waste
发明人：BOOS FRANK; SCHNITTKER NORMAN; SEELIG JOACHIM
权利人:ZIMMER AG
摘要:The invention comprises a method for synthesizing polyethylene terephthalate from waste polyethylene terephthalate by cleavage with ethylene glycol and separation of bis(hydroxyethylene) terephthalate from the cleavage mixture with a specific temperature program, recrystallization from water, and esterification and polycondensation with the addition of terephthalic acid. n The invention further comprises a method for synthesis of polyethylene naphthalate from waste polyethylene naphthalate in a similar manner.

专利号:US-7470370-B2
优先权日:2003-06-05
标 题 :Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration
发明人：PARKER KENNY RANDOLPH; LIN ROBERT
权利人:EASTMAN CHEM CO
摘要:A process is disclosed that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves recovery of a metal catalyst from an oxidizer purge stream through the use of a pressure filter, the combining of water with a mother liquor to recover the metal catalyst and then subjecting an aqueous mixture so formed to a single stage extraction with an extraction solvent to produce an extract stream comprising organic impurities and a raffinate stream comprising the metal catalyst.

专利号:US-9631051-B2
优先权日:2013-06-12
标 题:Device for the synthesis of a polymer with extraction of a gaseous substance comprising a reaction chamber having at least one circular-cylindrical section
发明人：ZHU NING; STAMMER ACHIM; CLAUSS JOACHIM; KORY GAD
权利人:BASF SE
摘要:An apparatus for synthesis of a polymer with separation of a gaseous substance comprises a reaction space having an essentially circular cylindrical upper section which is bounded by two circular faces and one shell face and has a longitudinal cylinder axis, and a lower section, an inlet orifice disposed in a circular face or the shell face of the upper section, a first outlet orifice disposed in a wall of the lower section, a second outlet orifice disposed in the shell face of the upper section opposite the first outlet orifice, and a removal device which is disposed so as to be rotatable about the longitudinal cylinder axis and is in contact with both circular faces and the shell face. This apparatus can especially be used for performance of a process including the feeding of an oligomer melt into a reaction space through an inlet orifice, the polymerization of the oligomer melt to give a polymer melt, the removal of the polymer melt from the reaction space through a first outlet orifice of the reaction space, and the removal of a gaseous substance from the reaction space through a second outlet orifice of the reaction space, wherein deposits on at least one inner wall of the reaction space are removed by a removal device and transported into the oligomer melt.

专利号:US-8957230-B2
优先权日:2011-06-30
标 题 :Synthesis of cleistanthin A and derivatives thereof
发明人：MULIK NILESH SHRIDHAR; PANGHAVANE KAILASH DATTATRAYA
权利人:MULIK NILESH SHRIDHAR; PANGHAVANE KAILASH DATTATRAYA
摘要:The present invention provides a method for preparing Cleistanthin A, a diphyllin glycoside, derivatives thereof and intermediates thereto. In particular the present invention provides in one of the aspect a method for synthesis of compound of formula D a key intermediate of diphyllin, which can be carried out in a shorter duration and at an ordinary temperature.

专利号:US-7494641-B2
优先权日:2003-06-05
标题 :Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid
发明人：LIN ROBERT; DE VREEDE MARCEL
权利人:EASTMAN CHEM CO
摘要:Disclosed is a process that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid. The process involves the addition of a wash solution to a high temperature molten dispersion to recover the metal catalyst and then subjecting an aqueous mixture or purified aqueous mixture so formed to a single stage extraction to remove organic impurities to produce an extract stream and a raffinate stream comprising the metal catalyst.