专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2004078678A3 METHOD FOR THE PRODUCTION OF HIGHLY CONCENTRATED FORMALDEHYDE SOLUTIONS 审中-公开
标题翻译：方法产生高浓甲醛溶液
公开(公告)号：WO2004078678A3
公开(公告)日：2004-11-04
申请号：PCT/EP2004002180
申请日：2004-03-04
申请人： BASF AG , STROEFER ECKHARD , LANG NEVEN , HASSE HANS , GRUETZNER THOMAS , OTT MICHAEL
发明人： STROEFER ECKHARD , LANG NEVEN , HASSE HANS , GRUETZNER THOMAS , OTT MICHAEL
IPC分类号： C07C45/00 , C07C45/82 , C07C47/058
CPC分类号： C07C45/002 , C07C45/82 , C07C47/04
摘要： A method for the production of highly concentrated formaldehyde solutions containing ≥ 50 wt. % CH2O from an aqueous formaldehyde solution having a lower CH2O content by evaporating part of said solution (partial evaporation), wherein the aqueous formaldehyde solution is heated to an evaporation temperature T wherein water becomes enriched in a gaseous phase in relation to the liquid phase and the formed gas phase is continuously or discontinuously removed. For the evaporation temperature T: T [ °C]

2. 发明申请

WO2009027434A2 METHOD FOR REMOVING FORMIC ACID FROM A TRIOXANE-CONTAINING MIXTURE 审中-公开
标题翻译：从三氧化物混合物中去除抗酸的方法
公开(公告)号：WO2009027434A2
公开(公告)日：2009-03-05
申请号：PCT/EP2008061222
申请日：2008-08-27
申请人： BASF SE , SZARVAS LASZLO , LANG NEVEN , SIGWART CHRISTOPH , SIEGERT MARKUS , WINDLIN FRANZ NIKLAUS , STROEFER ECKHARD
发明人： SZARVAS LASZLO , LANG NEVEN , SIGWART CHRISTOPH , SIEGERT MARKUS , WINDLIN FRANZ NIKLAUS , STROEFER ECKHARD
IPC分类号： C07D323/06
CPC分类号： C07D323/06
摘要： The invention relates to a method for removing formic acid from a mixture that contains formaldehyde, trioxane, water and formic acid, by distillation. According to said method, at least one tertiary amine and/or an imine or a mixture thereof capable of deprotonation and conversion to a salt is added, prior to or during distillation, to the mixture in a catalytic amount or in an amount sufficient to form the salt with the entire amount of formic acid, and the formic acid/amine salt is removed in a liquid phase in the distillation sump.
摘要翻译：在对甲酸从甲醛，三恶烷，水和通过蒸馏甲酸含酸混合物中分离的方法进行之前的混合物中使用，或者在蒸馏过程中，至少一种叔胺和/或亚胺或它们的混合物，所述去质子的甲酸，并在盐以催化量或足以与总量的甲酸盐化的量存在，并且将所形成的甲酸 - 胺盐在蒸馏塔底物中以液相排出。

3. 发明专利

AT384710T 未知
公开(公告)号：AT384710T
公开(公告)日：2008-02-15
申请号：AT05798084
申请日：2005-10-20
申请人： BASF AG
发明人： SIEGERT MARKUS , LANG NEVEN , STROEFER ECKHARD , STAMMER ACHIM , FRIESE THORSTEN
IPC分类号： C07D323/06
摘要： Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

4. 发明专利

CA2627080A1 PROCESS FOR PRODUCING TRIOXANE AND AT LEAST ONE COMONOMER 未知
公开(公告)号：CA2627080A1
公开(公告)日：2007-05-10
申请号：CA2627080
申请日：2006-10-27
申请人： BASF AG
发明人： STROEFER ECKHARD , SIEGERT MARKUS , LANG NEVEN , BOEHLING RALF , STAMMER ACHIM , OLDENBURG JAN
IPC分类号： C08G2/10 , C07D317/12 , C07D319/00 , C07D323/06
摘要： The invention relates to a process for producing trioxane and at least one comonomer for producing (co)polymers on a trioxane basis, in which, in a first step, formaldehyde and at least one comonomer starting material are reacted in aqueous solution to form trioxane and comonomer, wherein a reaction mixture A1 containing trioxane, comonomer, formaldehyde, water and if appropriate comonomer starting material is obtained. In a second step, the reaction mixture A1 is distilled in a first distillation stage at a first pressure, wherein a trioxane- and comonomer-enriched stream B1 and an essentially water- , formaldehyde- and if appropriate comonomer starting material-containing stream B2 are obtained. In a third step, the stream B1 is distilled in a second distillation stage at a pressure which is above the pressure of the first distillation stage, wherein a trioxane-, comonomer- and water-containing stream C1 and a product stream C2 essentially consisting of comonomer and trioxane are obtained.

5. 发明专利

DE102005037294A1 未知
公开(公告)号：DE102005037294A1
公开(公告)日：2007-02-15
申请号：DE102005037294
申请日：2005-08-08
申请人： BASF AG
发明人： LANG NEVEN , STROEFER ECKHARD , STAMMER ACHIM , FRIESE THORSTEN , SIEGERT MARKUS , HASSE HANS , GRUETZNER THOMAS , BLAGOV SERGEJ
IPC分类号： C07D323/06
摘要： The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

6. 发明专利

NO20062493L 未知
公开(公告)号：NO20062493L
公开(公告)日：2006-06-09
申请号：NO20062493
申请日：2006-05-31
申请人： BASF AG
发明人： STROFER ECKHARD , WEBER MARKUS , OLBERT GERHARD , JOHANN THORSTEN , LANG NEVEN , FIENE MARTIN , SIEGERT MARKUS
IPC分类号： B01J19/24 , B01J8/02 , B01J8/04 , C07C45/38 , F28D9/00
摘要： A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor ( 1 ) having heat-exchange plates ( 2 ) which are arranged in the longitudinal direction of the reactor ( 1 ) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities ( 3, 4 ) for the heat transfer medium to the heat-exchange plates ( 2 ) and also gaps ( 5 ) between heat-exchange plates ( 2 ) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.

7. 发明专利

AU2004309046A1 Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 未知
公开(公告)号：AU2004309046A1
公开(公告)日：2005-07-14
申请号：AU2004309046
申请日：2004-12-21
申请人： BASF AG
发明人： STROEFER ECKHARD , SIEGERT MARKUS , HASSE HANS , STAMMER ACHIM , LANG NEVEN , FRIESE THORSTEN
IPC分类号： C07D323/06
摘要： A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

8. 发明专利

CA2654892A1 INTEGRATED METHOD FOR THE PREPARATION OF TRIOXANE FROM FORMALDEHYDE 未知
公开(公告)号：CA2654892A1
公开(公告)日：2007-12-21
申请号：CA2654892
申请日：2007-06-11
申请人： BASF AG
发明人： LANG NEVEN , STROEFER ECKHARD , SIGWART CHRISTOPH , SIEGERT MARKUS
IPC分类号： C07D323/06
摘要： Integrated method for the preparation of trioxane from formaldehyde, comp rising the steps: a) introduction of a feeding flow A1 containing formaldehy de and water and a return flow B3 consisting essentially of formaldehyde and trioxane into a formaldehyde concentration unit, wherein said flows are sep arated into a formaldehyde-rich flow A2 and a flow A3 consisting essentially of water; b) introduction of a product flow C1, containing trioxane, water, and formaldehyde, a return flow E1 containing trioxane, water, and formalde hyde, and possibly flow A2 into a first low-pressure distillation column, wh erein said flows are distilled at a pressure of from 0.1 to 1.5 atmospheres, with a trioxane-enriched flow B1 containing predominantly trioxane, and als o water and formaldehyde, a slough removal flow B2 consisting essentially of formaldehyde and water, and the return flow B3 containing predominantly wat er, and also formaldehyde and trioxane removed as a side removal flow; c) in troduction of a slough removal flow B2 and possibly the flow A2 into a triox ane synthesis reactor, wherein said flows are allowed to react, and wherein the flow C1 containing trioxane, water, and formaldehyde is obtained; d) int roduction of a flow B1 into a mid-pressure distillation column, wherein said flow is distilled at a pressure of from 1.0 to3.0 atmospheres, wherein a lo w boiler stream D1 containing methanol, methylal, and methylformate,and a st ream D2 containing predominantly trioxane and also formaldehyde and water ar e obtained; e) introduction of a stream D2 into a high-pressure distillation column, wherein said stream is distilled at a pressure of from 2.5 to 10.0 atmospheres, wherein the return flow E1 contains trioxane, water, and formal dehyde, and a product flow E2 consisting essentially of trioxane is obtained ; wherein flow A2 can be introduced into either the low-pressure distillatio n column or into the trioxane-35 synthesis reactor, or into both.

9. 发明专利

CA2623573A1 INTEGRATED METHOD FOR THE PRODUCTION OF TRIOXANE FROM FORMALDEHYDE 未知
公开(公告)号：CA2623573A1
公开(公告)日：2007-02-15
申请号：CA2623573
申请日：2006-08-01
申请人： BASF AG
发明人： GRUETZNER THOMAS , BLAGOV SERGEJ , FRIESE THORSTEN , STAMMER ACHIM , LANG NEVEN , STROFER ECKHARD , SIEGERT MARKUS , HASSE HANS
IPC分类号： C07D323/06
摘要： The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

10. 发明专利

NO20062749A 未知
公开(公告)号：NO20062749A
公开(公告)日：2006-07-12
申请号：NO20062749
申请日：2006-06-13
申请人： BASF AG
发明人： STAMMER ACHIM , HASSE HANS , STROEFER ECKHARD , GRUETZNER THOMAS , LANG NEVEN , SIEGERT MARKUS , FRIESE THORSTEN , OTT MICHAEL , BLAGOV SERGEJ
IPC分类号： B01D3/14 , B01D3/36 , C07D323/06
CPC分类号： C07D323/06 , B01D3/146 , B01D3/36 , Y02P20/127

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式