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| Number | Title | Issue Date |
| 7259129 | Silver-containing catalysts, the manufacture of such silver-containing catalysts, and the use thereof A high activity and high selectivity silver catalyst comprising silver and, optionally, one or more promoters supported on a suitable support material having the form of a shaped agglomerate. The structure of the shaped agglomerate is that of a hollow cylinder havin... | 08/21/2007 |
| 7247600 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 07/24/2007 |
| 7241926 | Method for producing polyether alcohols A process for preparing polyether alcohols by addition of alkylene oxides onto H-functional starter substances in the presence of multimetal cyanide catalysts, wherein the multimetal cyanide catalysts are microporous and have a specific surface area of more than 100... | 07/10/2007 |
| 7232918 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7232786 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7226988 | Method of forming polyetherols in the presence of carboxy-modified aluminum-based catalysts A polyether polyol is formed by a method utilizing a carboxy-modified aluminum-based catalyst. The method includes providing an alkylene oxide, providing an initiator molecule having at least one alkylene oxide reactive hydrogen, and reacting the alkylene oxide with... | 06/05/2007 |
| 7132574 | Preparation of perfluoropolyethers having at least one —CHOH or —CH(CF)OH end group A process for preparing perfluoropolyethers having at least one —CH2OH or —CH(CF3)OH end group by reaction of the corresponding pefluoropolyethers having at least one carboxylic —COOH or ketonic —(CF3)C═O end group with gas... | 11/07/2006 |
| 7022884 | Preparation of polyetherpolyols in the presence of a multimetal cyanide complex catalyst Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical, highly cylindrical reactor ... | 04/04/2006 |
| 7015364 | Process for preparing polyether polyols A process for preparing polyether polyols includes a precipitation step, a recrystallization step, and a reaction step. In the precipitation step, a multimetal cyanide compound is precipitated by reaction of a metal salt with a cyanometalate compound. In the recryst... | 03/21/2006 |
| 6977045 | Process for the fractionation of polymers A process for the purification or fractionation of aqueous soluble polymers using an aqueous two-phase system is described. The concentrations of the polymer to be fractionated and of an aqueous soluble salt, and the temperature of the aqueous fractionation medium a... | 12/20/2005 |
| 6919486 | Polyetherols produced using aluminium phosphonate catalysts A method for the production of polyetherols using aluminum phosphonate catalysts is disclosed. Reaction products of the process include various polyetherols including very low unsaturation polyether polyols. The aluminum phosphonate catalyst preferably has a general... | 07/19/2005 |
| 6878661 | Bimetallic-cyanide catalysts used for preparing polyether polyols The invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b)... | 04/12/2005 |
| 6858761 | Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process The present invention provides a process and its utilization in a process comprising the step of carrying out an addition reaction of an alkylene oxide to an addition-receiving substance in the presence of a resin catalyst, thereby producing the addition reaction pr... | 02/22/2005 |
| 6812367 | Polyethylene glycol and process for producing the same Polyethylene glycol for use in fields with application to a living body wherein the sum of the contents of ethylene glycol and diethylene glycol in the polyethylene glycol is less than or equal to that expressed in the following formula [I]: ... | 11/02/2004 |
| 6806393 | Multimetal cyanide compounds, their preparation and their use In multimetal cyanide complexes, more than 30% by weight of the primary particles have a platelet-like habit, i.e. the length and width of the primary particles is at least three times the thickness of the particles. ... | 10/19/2004 |
| RE38558 | Polyoxypropylene/polyoxyethylene copolymers with improved biological activity The present invention comprises novel preparations of polyoxypropylene/polyoxyethylene copolymers which retain the therapeutic activity of the commercial preparations, but are substantially free from the undesirable effects which are inherent in the prior art prepar... | 07/20/2004 |
| 6740686 | Process for the manufacture of polyurethane foam, amine polyesterpolyol used in this process and foam obtained The invention concerns a method for making a polyurethane foam by reacting at least a polyester polyol with at least a polyisocyanate in the presence of a foaming agent and a catalytic agent, such a polyester polyol having been previously obtained by reacting a reac... | 05/25/2004 |
| 6717019 | Glycidyl ether-capped acetylenic diol ethoxylate surfactants The present invention pertains to glycidyl ether-capped acetylenic diol ethoxylates having a structure according to the formula: wherein R1 is hydrogen or a linear, branched, or cyclic alkyl group having from ... | 04/06/2004 |
| 6664428 | Method of producing polyetherpolyols A process for the preparation of polyetherpolyols by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst is proposed, the reaction being carried out i... | 12/16/2003 |
| 6646145 | Processes for preparing alkoxylated nonionic surfactants using hydrotalcite catalysts Processes for preparing alkoxylated nonionic surfactants are disclosed, wherein a compound having at least one active hydrogen atom, a carboxylic acid ester or mixtures thereof are reacted with an alkylene oxide in the presence of a hydrotalcite catalyst ... | 11/11/2003 |
| 6620976 | Polyethylene glycol and process for producing the same Polyethylene glycol for use in fields with application to a living body wherein the sum of the contents of ethylene glycol and diethylene glycol in the polyethylene glycol is less than or equal to that expressed in the following formula [I]: ##EQU1##... | 09/16/2003 |
| 6608231 | Double-metal cyanide catalysts for producing polyether polyols The invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide co... | 08/19/2003 |
| 6586564 | Double-metal cyanide catalysts for preparing polyether polyols The invention relates to double-metal cyanide (DMC) catalysts for preparing polyether polyols by the polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, wherein the DMC catalysts are composed of: a) at least one DMC c... | 07/01/2003 |
| 6540942 | Nonaqueous compositions and additives therefor Nonaqueous compositions comprising at least one product of the reaction between A) a linking agent of formula I R4 (Y)3 (I) Wherein each Y group is a halogen atom or one Y group is a halogen atom and two Y groups represent an epoxy oxyge... | 04/01/2003 |
| 6531566 | Polyoxyalkylenepolyols and process for producing ring-opened polymer A polyoxyalkylene polyol or monool (I) of the general formula (1) below, in which not less than 40% of the terminally located hydroxyl-containing groups, namely --AO--H groups, are primary hydroxyl-containing groups of the general formula (2) below, or; a... | 03/11/2003 |
| 6515036 | Method of decomposing a polyurethane A method of recovering a decomposition product from a polyurethane, the method comprising the steps of thermally decomposing a polyurethane into a liquid containing a polyol and a urea compound which is soluble in the polyol, and solids containing a urea ... | 02/04/2003 |
| 6486354 | Solid phase supports Embodiments of the present invention generally relate to carrying out organic chemistry on solid supports comprising derivatised functionalities, methods for synthesizing said supports, methods for synthesizing compounds comprising amine groups or N-conta... | 11/26/2002 |
| 6465605 | Branched polymeric surfactant reaction products, methods for their preparation, and uses therefor Polymeric compounds useful as low foaming surfactants and defoaming and stabilizing agents for aqueous-and nonaqueous-based compositions, and to processes for the preparation of the polymeric compounds, wherein the polymeric compounds are the reaction pro... | 10/15/2002 |
| 6403842 | Processes for producing poly(alkylene ether) glycol Disclosed are a process for producing a poly(alkylene ether) glycol which comprises polymerizing a cyclic ether in the presence of at least a catalyst and a carboxylic acid anhydride, wherein the carboxylic acid anhydride has a ketene dimer content of 50 ... | 06/11/2002 |
| 6359101 | Preparing polyether polyols with DMC catalysts A process for making polyether polyols employing a double metal cyanide (DMC) catalyst with specific low molecular weight polyether polyols as starters in combination with specific reaction conditions and impurity levels.... | 03/19/2002 |
| 6350920 | Method for preparing polyether polyols Polyether polyols can be prepared by reacting polyols with epoxides in the presence of basic catalysts, by treating the polyether polyols containing the basic catalysts with OH-functional solid compounds of metals of groups III to VIII of the periodic sys... | 02/26/2002 |
| 6323375 | Crystalline double metal cyanide catalysts for producing polyether polyols The present invention relates to highly active, substantially crystalline double metal cyanide (DMC) catalysts, a process for the preparation of these double metal cyanide catalysts, a process for producing polyether polyols by the polyaddition of alcohol... | 11/27/2001 |
| 6313060 | Catalyst for ring-opening polymerization of alkylene oxide, method for preparation thereof and use thereof A resilient polyurethane foam produced by using a polyether polyol produced by reacting alkylene oxides with a polyhydroxy compound having at least 2 hydroxyl groups as an initiator in the presence of the catalyst for alkylene oxide ring-opening polymeriz... | 11/06/2001 |
| 6303833 | Multi-metal cyanide complexes as catalysts and their use in preparing polyetherpolyols A crystalline multimetal cyanide complex of the formula (I) M1a [M2 (CN)b L1c ]d *e(M1f Xg)*hL2 'iH2 O (I) where M1 is at... | 10/16/2001 |
| 6248889 | Process for converting an alcohol to the corresponding fluoride A process for preparing a fluoride from its corresponding alcohol comprises the steps of (a) forming a mixture comprising (i) at least one fluorinated, saturated aliphatic or alicyclic sulfonyl fluoride (for example, perfluorobutanesulfonyl fluoride) and ... | 06/19/2001 |
| 6204357 | Double metal cyanide catalysts for preparing poly-etherpolyols The invention is directed to new double metal cyanide (DMC) catalysts, a process for the preparation of these catalysts, and to a process for the preparation of polyetherpolyols by the polyaddition of alkylene oxides to starter compounds which contain act... | 03/20/2001 |
| 6191315 | Haze free polyether polyol compositions and a method for their preparation Most generally, the invention provides a method for making a neutralized polyether polyol, comprising the steps of a) Polymerizing one or more alkylene oxides in the presence of an alkaline catalyst to form a polyalkylene oxide intermediate; and b) Neutralizin... | 02/20/2001 |
| 6028230 | Epoxide polymerization process The amount of high molecular weight impurity present in a polyether polyol produced by alkoxylation of an active hydrogen-containing initiator using an epoxide such as propylene oxide and a substantially amorphous highly active double metal cyanide comple... | 02/22/2000 |
| 5965778 | Polyurethane elastomers having improved green strength and demold time, and polyoxyalkylene polyols suitable for their preparation Elastomers exhibiting decreased demold times and improved green strength are prepared by reacting a di- or polyisocyanate with a monodisperse polyoxypropylene diol having ultra-low unsaturation, and preferably prepared by the double metal cyanide.t-butyl ... | 10/12/1999 |
| 5962748 | Process for preparing low unsaturation polyether polyols Polyether polyols having reduced terminal unsaturation are prepared in a process comprising a first step comprising reacting propylene oxide with an initiator having at least two hydroxyl groups in the presence of a basic catalyst, a second step of contac... | 10/05/1999 |
