| Patent Number |
Title Of Patent |
Date Issued |
| 7553916 |
Loop reactor with varying diameter for olefin polymerization |
June 30, 2009 |
| Process for polymerizing at least one olefinic monomer in a loop reactor at from 20 to 150.degree. C., but below the melting point of the polymer to be formed, and a pressure of from 5 to 100 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension |
| 7517938 |
Loop reactor with varying diameter for olefin polymerization |
April 14, 2009 |
| Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150.degree. C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 ba |
| 7348384 |
Supported, titanized chromium catalyst and its use for preparing homopolymers and copolymers of |
March 25, 2008 |
| Novel supported, titanized chromium catalysts for the homopolymerization of ethylene and the copolymerization of ethylene with .alpha.-olefins, a process for preparing them and to their use for the polymerization of olefins. |
| 7172989 |
Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon |
February 6, 2007 |
| In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as |
| 7094724 |
Catalytic solid supported on calcined hydrotalcite for olefinic polymerisation |
August 22, 2006 |
| Catalyst solid for olefin polymerization comprising A) at least one calcined hydrotalcite and B) at least one organic transition metal compound, and also a catalyst system comprising the catalyst solid, the use of the catalyst solid for the polymerization or copolymerization of olefi |
| 7084312 |
Catalyst and method for hydrogenating carbonyl compounds |
August 1, 2006 |
| A process for the hydrogenation of an organic compound containing at least one carbonyl group comprises bringing the organic compound in the presence of hydrogen into contact with a shaped body which can be produced by a process in which (i) an oxidic material comprising copper oxi |
| 7019089 |
Suspended chrome catalyst containing titanium and the use thereof for producing ethylene homopol |
March 28, 2006 |
| Novel supported, titanized chromium catalysts can be used for the homopolymerization of ethylene and the copolymerization of ethylene with .alpha.-olefins. |
| 6924248 |
Catalyst system for carrying out olefin polymerization comprising a calcined hydro-talcite servi |
August 2, 2005 |
| Catalyst system for olefin polymerization comprising A) at least one calcined hydrotalcite, B) at least one organic transition metal compound, C) optionally one or more cation-forming compounds and D) at least one organic magnesium compound. |
| 6906228 |
Method for catalytic hydrogenation on rhenium-containing active carbon carrier catalysts |
June 14, 2005 |
| In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as |
| 6864208 |
Method for production of a solid catalyst for olefin polymerization |
March 8, 2005 |
| A catalyst solid for olefin polymerization comprising A) at least one magnesium halide, B) at least one metallocene complex and C) at least one compound capable of forming metallocenium ions, is prepared by i) firstly preparing finely divided support particles consisting of the ma |
| 6765118 |
Method for the production of alcohols on rhenium-containing activated charcoal supported catalys |
July 20, 2004 |
| In a process for the preparation of alcohols by catalytic hydrogenation of carbonyl compounds, the catalyst used is 0.01 to 50% by weight of rhenium and 0 to 20% by weight, in each case based on the total weight of the catalyst, of at least one further metal chosen from Zn, Cu, Ag, Au, N |
| 6525222 |
Process for preparing amines |
February 25, 2003 |
| Amines are prepared by reacting aldehydes or ketones at elevated temperature under elevated pressure with nitrogen compounds selected from the group of ammonia, primary and secondary amines, and with hydrogen in the presence of a catalyst, wherein the catalytically active mass of the |
| 6429339 |
Method for producing cyclopentanone |
August 6, 2002 |
| A process for preparing cyclopentanone by reacting adipic esters of the formulawhere R.sub.1 and R.sub.2 are each alkyl having from 1 to 12 carbon atoms, cycloalkyl having 5 or 6 carbon atoms, aralkyl or aryl and R.sub.2 may additionally be hydrogen, in the presence of oxidic catalysts c |
| 6417353 |
Preparing amines |
July 9, 2002 |
| Amines are prepared by reacting aldehydes or ketones at elevated temperature under elevated pressure with nitrogen compounds selected from the group of ammonia, primary and secondary amines, and with hydrogen in the presence of a catalyst containingcopper, wherein the catalytically activ |
| 6284932 |
Method for producing alcohols containing cycloaliphatic groups |
September 4, 2001 |
| In a process for preparing alcohols containing cycloaliphatic groups by hydrogenation of carboxylic acids containing aromatic nuclei, or anhydrides or esters thereof, in the presence of a catalyst, the hydrogenation is carried out in one stage, and the catalyst contains at least one |
| 6262317 |
Process for preparing 1,4-butanediol by catalytic hydrogenation of 1,4-butinediol |
July 17, 2001 |
| A process for preparing 1,4-butanediol by continuous catalytic hydrogenation of 1,4-butynediol comprises reacting 1,4-butynediol with hydrogen in the liquid continuous phase in the presence of a heterogeneous hydrogenation catalyst at from 20 to 300.degree. C., a pressure of from 1 t |
| 6204417 |
Method for producing aliphatic alcohols |
March 20, 2001 |
| In a process for preparing aliphatic alcohols by hydrogenating aliphatic carboxylic acids or anhydrides or esters thereof or lactones in the presence of a catalyst comprising Pt and Re, in the form of the metal or an oxide in each case, the catalyst further comprises at least one further |
| 6162928 |
Preparation of pyrroles |
December 19, 2000 |
| A process for preparing pyrroles of the formula I: ##STR1## where R.sub.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and are hydrogen atoms, alkyl groups having from 1 to 12 carbon atoms or cycloalkyl groups having from 3 to 12 carbon atoms, by dehydrogenation of py |
| 6140545 |
Preparation of alcohols |
October 31, 2000 |
| In a process for preparing alcohols by gas phase hydrogenation of carboxylic acids or esters thereof at elevated temperature and elevated pressure in the presence of catalysts consisting of or comprising, as hydrogenating components, oxides of main group VI and/or subgroup IV, the hy |
| 6057442 |
Preparation of amines |
May 2, 2000 |
| Amines are prepared from primary or secondary alcohols and nitrogen compounds selected from the group of ammonia, primary and secondary amines, at from 80 to 250.degree. C. under pressures from 0.1 to 40 MPa with hydrogen in the presence of a catalyst comprising zirconium, copper and |
| 6046359 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones |
April 4, 2000 |
| A catalyst comprises, based on the total weight of the catalyst,0.1-6% by weight of cobalt, nickel or a mixture thereof,0.001-25% by weight of ruthenium,0-10% by weight of copper and0-5% by weight of promoterson a porous metal oxide carrier.It preferably comprises 0.1-3% by weight of cobalt and 0.1- |
| 6034029 |
Monoclinic zirconium dioxide having a large surface area |
March 7, 2000 |
| Zirconium dioxide which is monoclinic to at least 80% by weight and has a BET surface area of at least 100 m.sup.2 /g is prepared by admixing aqueous zirconium salt solutions with ammonia, drying and calcining the precipitation product, aging the precipitation product, prior to drying, |
| 6020501 |
Process for preparing phthalides |
February 1, 2000 |
| The disclosure is a process for preparing a phthalide of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently of the others hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, by hydrogenation of a phthalic anhydride of the |
| 6013844 |
Preparation of catechol monoethers and catechols |
January 11, 2000 |
| A process for preparing catechol monoethers or catechols of the formula Ia or Ib ##STR1## where R.sup.1 and R.sup.2 are, independently of one another, hydrogen or C.sub.1 -C.sub.8 hydrocarbon radicals, and R.sup.3 is a C.sub.1 -C.sub.8 hydrocarbon radical, which comprises a 2-hyd |
| 5958825 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones |
September 28, 1999 |
| A catalyst comprising, based on the total weight of the catalyst,more than 6-50% by weight of cobalt, nickel or a mixture thereof,0.001-25% by weight of ruthenium,0-10% by weight of copper and0-5% by weight of promoterson a porous metal oxide carrier can be prepared by(a) impregnating the carrier wi |
| 5916838 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones |
June 29, 1999 |
| A catalyst comprises, based on the total weight of the catalyst,0.1-6% by weight of cobalt, nickel or a mixture thereof,0.001-25% by weight of ruthenium,0-10% by weight of copper and0-5% by weight of promoterson a porous metal oxide carrier.It preferably comprises 0.1-3% by weight of cobalt and 0.1- |
| 5840986 |
Preparation with heterogeneous catalysis of N-alkyl-substituted aminoalkynes |
November 24, 1998 |
| A process for preparing N-alkyl-substituted aminoalkynes by reacting an alkyne with a carbonyl compound and an amine with heterogeneous catalysis in which an unsupported copper acetylide derived from malachite is used as the catalyst. The N-alkyl-substituted aminoalkyne have a wide varie |
| 5831129 |
Preparation, with heterogeneous catalysis, of N-hydroxyalkyl-substituted aminoalkynes |
November 3, 1998 |
| N-Hydroxyalkyl-substituted aminoalkynes of the formula I ##STR1## are prepared by reacting an alkyne with a 1-oxa-3-azaheterocyclo-alkane in a reaction with heterogeneous catalysis by a catalyst which comprises a compound of a metal of the first or second sub-group. |
| 5783711 |
Process for the preparation of heterocyclic aldehydes |
July 21, 1998 |
| Preparation of heterocyclic aldehydes I ##STR1## (A, B=optionally substituted methylene groups; m, n=1 to 5; m+n>2), by hydrogenation of carboxylic acids IIa ##STR2## or one of their esters IIb derived from a C.sub.1 -C.sub.10 alcohol, at a temperature of from 200.degree. |
| 5763676 |
Preparation of aromatic aldehydes |
June 9, 1998 |
| Aromatic aldehydes are prepared by catalytically reacting aromatic carboxylic acids or their esters with hydrogen in the gas phase at from 200.degree. to 450.degree. C. and from 0.1 to 20 bar in the presence of a zirconium dioxide/lanthanide catalyst having a high BET surface area of |
| 5733838 |
Process for the production of a hydrogenation catalyst |
March 31, 1998 |
| A hydrogenation catalyst based on an alloy of aluminum and of a transition metal is prepared by preparing a kneaded material from the alloy and an assistant, converting the kneaded material into moldings, calcining the moldings and treating the calcined moldings with an alkali metal |
| 5679869 |
Preparation of aldehydes |
October 21, 1997 |
| A process for preparing aldehydes of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, C.sub.7 -C.sub.12 -alkylphenyl, C.sub.7 -C.sub.12 -phenylalkyl and R.sup.1 and R.sup.2 are joined |
| 5663438 |
Preparation of cyclic amines |
September 2, 1997 |
| A process for the preparation of a phenyl amine which may be substituted by alkyl or cycloalkyl in which the corresponding cyolohexylamine is reduced at temperatures of 150.degree. to 300.degree. C. and pressures of 0.01 to 50 bar in the presence of a heterogeneous dehydrogenation cataly |
| 5508465 |
Preparation of aliphatic alpha, omega-aminonitriles in the gas phase |
April 16, 1996 |
| Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures in the presence of a catalyst in the gas phase by a process which comprises carrying out the hydrogenation with a catalyst based on at least one metal |
