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11.
公开(公告)号:JPH1095747A
公开(公告)日:1998-04-14
申请号:JP23585697
申请日:1997-09-01
Applicant: DEGUSSA
Inventor: WIELAND STEFAN DR , PANSTER PETER DR
Abstract: PROBLEM TO BE SOLVED: To obtain a carboxylate by reacting an alcohol with a carboxylic acid in the presence of a sulfonic acid group a polysiloxane having under a vigorous agitation. SOLUTION: This method for producing a carboxylate ester comprises mixing an alcohol with a carboxylic acid and/or a carboxylic anhydride and/or a carboxylate ester and/or a partially esterified carboxylic acid, vigorously stirring the mixture in the presence of a sulfonic acid group-containing solid polysiloxane insoluble in the reaction solvent at 100-220 deg.C, simultaneously continuously separating off the by-produced reaction water, and subsequently isolating the ester. The polysilixane is modified with a soluble titanium, zirconium and/or aluminum compounds. The polysiloxane comprises 0.01-3mm spherical granules, and has a specific surface area of 0.1-1200m /g, a specific pore volume of 0.01-6.0ml/g and a bulk density of 50-1000g/liter.
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公开(公告)号:DE19635769A1
公开(公告)日:1998-03-05
申请号:DE19635769
申请日:1996-09-04
Applicant: DEGUSSA
Inventor: WIELAND STEFAN DR , PANSTER PETER DR
IPC: B01J31/06 , C07B61/00 , C07C67/08 , C07C69/14 , C07C69/80 , C07C67/03 , C07C69/30 , C07C69/58 , C08L83/04
Abstract: The preparation of carboxylic acid esters comprises: (a) preparation of a reaction mixture containing an alcohol and at least one compound chosen from a carboxylic acid, carboxylic acid anhydride, carboxylic acid ester or partially esterified carboxylic acid; (b) heating the reaction mixture in the presence of a solid polysiloxane with sulphonic acid groups which is insoluble in the reaction medium, whilst stirring intensively and removing water formed in the reaction; and (c) isolating the chosen ester product. Also claimed are: (i) polysiloxanes with sulphonic acid groups, whose surface is modified with 0.1-1 % aluminium oxide compounds or 0.1-5 % titanium or zirconium oxide compounds, with respect to the solids content and (ii) the preparation of surface-modified polysiloxanes with sulphonic acid groups.
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公开(公告)号:DK0672640T3
公开(公告)日:1998-02-02
申请号:DK95103449
申请日:1995-03-10
Applicant: REMMERS BAUCHEMIE GMBH , DEGUSSA
Inventor: PANSTER PETER DR , WIELAND STEFAN DR , GOEBEL THOMAS DR , BRANDES CHRISTIAN , WERNER UTE , ZINSMEISTER KLAUS DR , LANGEN MARION
IPC: C04B41/49 , C04B41/64 , C09D183/04
Abstract: Method for the undercoating or impregnation of natural or synthetic mineral building materials with aq. suspensions or solns. that contain 0.1-70 (10-30) wt.% at least one silicon-contg. ion exchange material of formula (I) or an oligomer thereof, w.r.t. soln. or suspension. The treatment method is a single- or multi-stage process and is opt. combined with a treatment process with organic or aq. solns. or emulsions contg. hydrolysable sil(ox)anes. Ä(YO)3Si(CH2)xÜnEX (I) x = 1-12; n = 1-3, depending on E; Y = H, Na, K, Mg, Ca or Ba; E = cation or anion exchanging gp.; and X = H or alkali(ne earth) metal ion, or OH or an anion.
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公开(公告)号:DE19536366A1
公开(公告)日:1997-04-03
申请号:DE19536366
申请日:1995-09-29
Applicant: DEGUSSA
Inventor: AUER EMMANUEL DR , WIELAND STEFAN DR , LANSINK-ROTGERINK HANS DR , JACOBSEN HAUKE DR , RIEDEMANN HEIKE
Abstract: The prodn. of 2,2'-bis-(4-hydroxyphenyl)-propanes (BHPP) comprises reacting the corresp. phenols and carbonyl cpds. at 40-150 degrees C in presence of a formed acid catalyst consisting of a sulphonate gp.- and mercapto gp.-contg. organopolysiloxane (OFP) contg. units of formula (O3/2SiR'SO3)M(x+) (I) and O3/2SiR SH (III). In (I) and (III), R = 1-12C alkylene, 5-8C cycloalkylene or a gp. of formula -(CH2)n-Cyc-(CH2)m- or -(CH2)n-Phe-(CH2)m- (II) (with n, m = 0-6, i.e. the no. of Si- or S-linked CH2 gps.; Cyc = cyclohexylene; Phe = phenylene); M = H, opt. NH4, or a metal with a valency of x = 1-4; R = R . The free valencies of the O atoms attached to Si are taken up by the Si atoms of other gps. (I) and/or (II) and/or by the metal atom-oxygen gps. of crosslinking bridging gps. of formula SiO4/2 (IV) and opt. R''SiO3/2, R'SiO3/2, R'2SiO2/2, AlO3/2, R'AlO2/2, TiO4/2, R'TiO3/2 and R'2TiO2/2 (V). In (V) and (IV), R' = Me or Et; R" = Ph or 2-12C alkyl. The ratio of gps. (I):(III) = (10:1)-(1:10), the ratio of (I):(IV) = (1:3)-(1:20), and the ratio of (IV):(V) = (1:0)-(1:0.5). The required prod. is then isolated.
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公开(公告)号:DE4405029A1
公开(公告)日:1995-08-24
申请号:DE4405029
申请日:1994-02-17
Applicant: DEGUSSA
Inventor: TACKE THOMAS DR , WIELAND STEFAN DR , PANSTER PETER DR , BANKMANN MARTIN DR , MAEGERLEIN HENDRIK
IPC: B01J23/42 , B01J3/00 , B01J23/44 , B01J23/755 , C07C51/36 , C07C51/48 , C07C57/03 , C07C57/12 , C07C67/303 , C07C69/26 , C07C69/533 , C11B3/10 , C11C3/12 , C07C69/30 , B01J23/72 , C07C69/24
Abstract: A process is disclosed for continuously hydrogenating unsaturated fats, fatty acids or fatty acid esters on a shaped catalyst in a solid bed. The reactants flow over the catalyst in the presence of a medium or solvent mixture in supercritical conditions. This leads to considerably improved activity and selectivity of the hydrogenation reaction compared with conventional trickle bed hydrogenation processes.
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公开(公告)号:ES2038962T3
公开(公告)日:1994-11-16
申请号:ES90114313
申请日:1990-07-26
Applicant: DEGUSSA
Inventor: PANSTER PETER DR , WIELAND STEFAN DR
IPC: B01D15/00 , B01J20/22 , B01J20/26 , C02F1/62 , C08G77/22 , C08G77/26 , C08G77/28 , C08G77/48 , C08G77/54 , C08G77/58 , C08J3/12
Abstract: The invention relates to an organosiloxane copolycondensate comprising where R - R = in which R is C1-C10-alkylene, C5-C8-cycloalkylene or which is bonded directly to N or X, where X = NH-, N-CH3, N-C2H5, -S-, -S2-, -S3-, -S4-, P-C6H5, where R" is H or C1-C5-alkyl, which has optionally been crosslinked by means of Si-, Ti-, Zr- and/or Al-containing crosslinking agents, in the form of spherical particles having a diameter of from 0.01 to 3.0 mm, a specific surface area of from 0 to 1000 m /g, a specific pore volume of from 0 to 6.0 ml/g and a bulk density of from 50 to 1000 g/l. The invention furthermore relates to various preparation processes for the shaped copolycondensates, and to the use of certain compositions in each case for removing metals from solutions or for adsorption of gaseous organic compounds and/or steam.
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公开(公告)号:DE69002810D1
公开(公告)日:1993-09-23
申请号:DE69002810
申请日:1990-07-27
Applicant: DEGUSSA
Inventor: PANSTER PETER DR , WIELAND STEFAN DR
IPC: C08G77/28 , B01J20/22 , B01J20/26 , C02F1/62 , C02F5/00 , C02F5/08 , C02F5/10 , C08G77/22 , C08G77/26 , C08G77/48 , C08G77/54 , C08G77/58 , C08J3/12
Abstract: Die Erfindung betrifft gegebenenfalls mittels Si-, Ti-, Zr- und/oder Al-haltigen Vernetzern vernetztes Organosiloxanamin-Copolykondensat aus Einheiten R = direkt an N bzw. an X gebundenes Alkylen mit C1-C10, Cycloalkylen mit C5-C8 oder X = -NH2, -NH-(CH2)2-NH2, -N(CH3)2, -N(C2H5)2 -NH-(CH2)2-NH-(CH2)2-NH2, -Cl, -Br, -J, -SH, -P(C6H5)2, wobei R sec = H oder Alkyl mit C1-C3, in Form kugelförmiger Teilchen mit einem Durchmesser von 0,01 bis 3,0 mm, einer spezifischen Oberfläche von 0 bis 1000 m /g, einem spezifischen Porenvolumen von 0 bis 6,0 ml/g sowie einer Schüttdichte von 50 bis 1000 g/l. Sie betrifft weiterhin diverse Herstellungsverfahren für die geformten Copolykondensate sowie eine Verwendung jeweils bestimmter Zusammensetzungen zur Entfernung von Metallen aus Lösungen bzw. zur Adsorption von gasförmigen organischen Verbindungen und/oder von Wasserdampf.
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公开(公告)号:AT93251T
公开(公告)日:1993-09-15
申请号:AT90114426
申请日:1990-07-27
Applicant: DEGUSSA
Inventor: PANSTER PETER DR , WIELAND STEFAN DR
IPC: C08G77/28 , B01J20/22 , B01J20/26 , C02F1/62 , C02F5/00 , C02F5/08 , C02F5/10 , C08G77/22 , C08G77/26 , C08G77/48 , C08G77/54 , C08G77/58 , C08J3/12
Abstract: Die Erfindung betrifft gegebenenfalls mittels Si-, Ti-, Zr- und/oder Al-haltigen Vernetzern vernetztes Organosiloxanamin-Copolykondensat aus Einheiten R = direkt an N bzw. an X gebundenes Alkylen mit C1-C10, Cycloalkylen mit C5-C8 oder X = -NH2, -NH-(CH2)2-NH2, -N(CH3)2, -N(C2H5)2 -NH-(CH2)2-NH-(CH2)2-NH2, -Cl, -Br, -J, -SH, -P(C6H5)2, wobei R sec = H oder Alkyl mit C1-C3, in Form kugelförmiger Teilchen mit einem Durchmesser von 0,01 bis 3,0 mm, einer spezifischen Oberfläche von 0 bis 1000 m /g, einem spezifischen Porenvolumen von 0 bis 6,0 ml/g sowie einer Schüttdichte von 50 bis 1000 g/l. Sie betrifft weiterhin diverse Herstellungsverfahren für die geformten Copolykondensate sowie eine Verwendung jeweils bestimmter Zusammensetzungen zur Entfernung von Metallen aus Lösungen bzw. zur Adsorption von gasförmigen organischen Verbindungen und/oder von Wasserdampf.
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公开(公告)号:DE4040568A1
公开(公告)日:1992-06-25
申请号:DE4040568
申请日:1990-12-19
Applicant: DEGUSSA
Inventor: GOETZ PETER DR , WIELAND STEFAN DR , PANSTER PETER DR , GOOR GUSTAAF DR , SIEGMEIER RAINER DR
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公开(公告)号:DE59307627D1
公开(公告)日:1997-12-11
申请号:DE59307627
申请日:1993-07-23
Applicant: DEGUSSA
Inventor: WIELAND STEFAN DR , PANSTER PETER DR , GRETHE HORST
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