| Patent Number |
Title Of Patent |
Date Issued |
| 7041847 |
Method for cleaning crude terephthalic acid and catalysts suitable for the same and containing c |
May 9, 2006 |
| The invention relates to a method for cleaning crude terephthalic acid by means of catalytic, hydrogenating aftertreatment using a catalyst material containing at least one hydrogenation metal applied to a carbon carrier consisting of carbon fibres. The invention also relates to a ca |
| 6437206 |
Catalyst and processes for the selective hydrogenation of unsaturated compounds in hydrocarbon s |
August 20, 2002 |
| Unsaturated compounds in hydrocarbon streams are hydrogenated over a catalyst which, in the unused state, shows reflections which correspond to the following lattice plane spacings in the X-ray diffraction pattern [in 10.sup.-10 m]: 4.52, 2.85, 2.73, 2.44, 2.31, 2.26, 2.02, 1.91, 1.80, 1 |
| 6336942 |
Processes of treating leather and skins employing polymer compositions |
January 8, 2002 |
| Aqueous solutions or aqueous emulsions of copolymers are obtainable by copolymerization of(a) from 20 to 95 mol % of at least one monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acid or the anhydride thereof with(b) from 5 to 80 mol % of at least one branched oligomer or polyme |
| 6297415 |
Catalytic distillation process |
October 2, 2001 |
| A catalyst packing which can be produced by vapor deposition and/or sputtering of at least one substance active as catalyst and/or promotor onto woven or knitted fabrics or sheets as support material is used in a process for catalytic distillation in which a heterogeneously catalyzed |
| 6245944 |
Process for producing substituted indanones |
June 12, 2001 |
| A process for preparing a compound of the formula I ##STR1##where R.sup.1 and R.sup.2 are hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.3 is C.sub.1 -C.sub.10 -alkyl, phenyl or C.sub.1 -C.sub.4 -alkyl-substituted phenyl, comprises reacting a compound II ##STR2##with a compound of the |
| 6235069 |
Ethylene-vinyl formate copolymers, process for their preparation, their use as flow improvers, a |
May 22, 2001 |
| Copolymer comprising ethylene units and vinyl formate units, the content of free vinyl formate in the polymer preferably being not more than 5000 ppm, based on the weight of the copolymer, a process for its preparation, and its use as flow improver, especially in petroleum distillates, p |
| 6118034 |
Process for the selective hydrogenation of dienes in reformate flows |
September 12, 2000 |
| In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100.degree. C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space veloci |
| 6099601 |
Ethylene-vinyl formate copolymers, process for their preparation, their use as flow improvers, a |
August 8, 2000 |
| Copolymer comprising ethylene units and vinyl formate units, the content of free vinyl formate in the polymer preferably being not more than 5000 ppm, based on the weight of the copolymer, a process for its preparation, and its use as flow improver, especially in petroleum distillates, p |
| 6087536 |
Preparation of indene derivatives |
July 11, 2000 |
| A process for preparing indene derivatives of the general formula I ##STR1## where R.sup.1 is a C.sub.1 -C.sub.10 -alkyl radical, a phenyl radical or a C.sub.1 -C.sub.4 -alkyl-substituted phenyl radical andA is a bridge which, together with the adjacent carbons, forms a six-membered |
| 6037443 |
Thermoplastic elastomeric carbon monoxide/olefin copolymers |
March 14, 2000 |
| Linear, thermoplastic, elastomneric copolymers of carbon monoxide and olefinically unsaturated compounds have an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/ethyl |
| 5976202 |
Reaction products of polyolefins with vinyl esters and their use as fuel and lubricant additives |
November 2, 1999 |
| Reaction products of polyolefins having predominantly a terminal double bond and a number average molecular weight of from 250 to 10,000, which possess an aliphatic hydrocarbon skeleton which is straight-chain or carries C.sub.1 -C.sub.4 -alkyl side chains, with from 1 to 10 mol, per |
| 5919275 |
Fuel and lubricant additives, their preparation and fuel or lubricant compositions containing th |
July 6, 1999 |
| Fuel or lubricant additives based on reaction products of an ethylenically unsaturated poly-1-alkene derived from one or more 1-alkenes of 3 to 24 carbon atoms and from 0 to 50% by weight of ethene, processes for their preparation and fuel or lubricant compositions containing these addit |
| 5756621 |
2-oxazolinyl-terminated polymers and oligomers useful as compatibilizers |
May 26, 1998 |
| Polymers and oligomers of olefinically unsaturated C.sub.2 -C.sub.20 -hydrocarbons having one or two 2-oxazolinyl end groups have the structure (I) ##STR1## where A is a polymer or oligomer radical derived from the olefinically unsaturated C.sub.2 -C.sub.20 -hydrocarbons and the |
| 5747616 |
Ethylene-based copolymers and their use as flow improvers in mineral oil middle distillates |
May 5, 1998 |
| Ethylene-based copolymers which are suitable as flow improvers for mineral oil middle distillates are composed ofa) from 50 to 94% by weight of ethylene,b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids,c) from 3 to 20% by weight of one or more |
| 5684108 |
Ethylene-based copolymers and their use as flow improvers in mineral oil middle distillates |
November 4, 1997 |
| An ethylene-based copolymer which is suitable as a flow improver for mineral oil middle distillates and is composed ofa) from 50 to 94% by weight of ethylene;b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids;c) from 3 to 20% by weight of one or |
| 5621127 |
Preparation of bridged half sandwich complexes |
April 15, 1997 |
| Bridged half sandwich complexes are prepared by reacting cyclopentadienides with aziridines and subsequently adding metallating agents and transition metal compounds. |
| 5536788 |
Carboxyl-containing isobutene copolymers |
July 16, 1996 |
| Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the is |
| 5473022 |
Carboxyl-containing isobutene copolymers |
December 5, 1995 |
| Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the is |
| 5466753 |
Propylene copolymers grafted with monomaleimides |
November 14, 1995 |
| Grafted propylene copolymers having a melt flow index of from 0.1 to 100 g/10 min, at 230.degree. C. and under a weight of 2.16 kg, comprisinga.sub.1) a polymer comprising from 25 to 97% by weight of a propylene copolymer (I), which contains from 0.1 to 15% by weight of copolymerized C.s |
| 5466753 |
Propylene copolymers grafted with monomaleimides |
November 14, 1995 |
| Grafted propylene copolymers having a melt flow index of from 0.1 to 100 g/10 min, at 230.degree. C. and under a weight of 2.16 kg, comprisinga.sub.1) a polymer comprising from 25 to 97% by weight of a propylene copolymer (I), which contains from 0.1 to 15% by weight of copolymerized C.s |
