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Matches 251 - 300 out of 1,746

Document Document Title
WO/2006/048141A1
The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene in the presence of solvents. Said method is characterised in that compounds forming salt melts with hydrogen chloride are used...  
WO/2006/040912A1
[PROBLEMS] To provide a method by which the amount of hydrolysable chlorine contained in crude diphenylmethane diisocyanate is reduced to 0.03% or less in a short time. [MEANS FOR SOLVING PROBLEMS] The method of purifying crude diphenylm...  
WO/2005/123665A1
The invention relates to a method for producing isocyanates by reacting amines with phosgene in the gaseous phase in a reaction zone, whereby in order to terminate the reaction, the reaction mixture is guided through a zone, into which a...  
WO/2005/115974A1
The inventive method for producing isocyanate by reacting amines with phosgene, wherein a phosgene-containing educt flow (i) is substentially isocyanate-free and (ii) has an oxygen chloride mass content (hereafter referred to as HCI) whi...  
WO2005092842A8
The invention aims to provide a method whereby (meth)acrylate derivatives having an isocyanate group can be obtained in high yield by dehydrochlorination of 3-chloropropionate derivatives having an isocyanate group under industrially adv...  
WO/2005/092842A1
The invention aims to provide a method whereby (meth)acrylate derivatives having an isocyanate group can be obtained in high yield by dehydrochlorination of 3-chloropropionate derivatives having an isocyanate group under industrially adv...  
WO/2005/089085A3
A hardener composition for use as a component of a two component polyurethane coating composition, comprising a polyisocyanate, a catalyst for promoting reaction of the polyisocyanate with a reactive hydrogen compound, and one or more an...  
WO/2005/085186A1
Disclosed is a method for producing an isocyanate compound through reaction between a carbonate of a corresponding amine compound and phosgene, wherein phosgene is introduced into an organic solvent solution of the carbonate of the amine...  
WO/2005/061445A1
Methods and reagents for rhodium-promoted carbonylation via isocyanate using carbon-isotope labeled carbon monoxide are provided. The resultant carbon­ isotope labeled compounds are useful as radiopharmaceuticals, especially for use in ...  
WO2004014845A8
The invention relates to a method for producing organic isocyanates, said method consisting of the following steps: (a) a first partial quantity of chlorine containing < 400 ppm of free or bonded bromine and iodine is prepared; (b) a sec...  
WO/2005/012236A1
The present invention provides a stabilized (meth)acryloyloxyalkyl isocyanate, a process for stabilization thereof and a process for preparation of the same. More particularly, it provides a (meth)acryloyloxyalkyl isocyanate having a sma...  
WO/2005/012237A1
A process for preparing a high purity (meth)acryloyloxyalkyl isocyanate having a very small hydrolyzable chlorine content is provided. The high purity (meth)acryloyloxyalkyl isocyanate is prepared by subjecting a hydrolyzable chlorine co...  
WO/2004/111119A1
The invention relates to a mixture (1) containing (a) isocyanate and (b) stabilisers with a molecular weight of between 600 g/mol and 10,000 g/mol, said stabilisers comprising at least two phenolic groups.  
WO2004080587A8
The invention relates to a method for producing polyisocyanates by reacting primary amines with phosgene, comprising the following steps: a) mixing the amine with the phosgene; b) reacting the amine with the phosgene in a reactor, inside...  
WO/2004/080587A1
The invention relates to a method for producing polyisocyanates by reacting primary amines with phosgene, comprising the following steps: a) mixing the amine with the phosgene; b) reacting the amine with the phosgene in a reactor, inside...  
WO/2004/058689A1
The invention relates to a method for producing isocyanates by reacting amines with phosgene. Said method is characterized by the fact that the phosgene-containing feedstock flow has a hydrogen chloride content of more than 0.8 percent b...  
WO/2004/056757A1
The invention relates to a method for producing isocyanates by reacting amines with phosgene inside a reactor followed by separating the isocyanate out from the reaction mixture exiting the reactor and purifying this isocyanate. The inve...  
WO/2004/056756A1
The invention relates to a method for the continuous production of polyisocyanates by reaction of organic amines with phosgene, characterised in that the reaction occurs in at least three stages, whereby the first stage is in a mixing un...  
WO/2004/056759A1
The invention relates to a method for producing isocyanates by purifying a product flow resulting from isocyanate synthesis.  
WO/2004/056760A1
The invention relates to a method for producing (cyclo)aliphatic isocyanates by reacting, in an organic solvent, primary (cyclo)aliphatic amines with phosgene in the liquid phase, and to devices for carrying out this method.  
WO/2004/056761A1
The invention relates to a method for producing isocyanates by reacting amines with phosgene in the presence of inert organic solvents inside a reactor and by subsequently processing the reaction mixture exiting the reactor. The inventio...  
WO/2004/056758A1
The invention relates to a method for partially or completely separating a substance mixture consisting of hydrogen chloride and phosgene, optionally of solvents and optionally of low-boiling fractions and inert substances such as those ...  
WO2004037718A3
The invention relates to a method for producing chlorine by oxidising hydrogen chloride in the presence of a catalyst, whereby hydrogen chloride is not used in a gaseous form, but at least partially in the form of hydrochloric acid. In a...  
WO/2004/037718A2
The invention relates to a method for producing chlorine by oxidising hydrogen chloride in the presence of a catalyst, whereby hydrogen chloride is not used in a gaseous form, but at least partially in the form of hydrochloric acid. In a...  
WO/2004/031132A1
The invention relates to a method for producing isocyanates by reacting primary amines with phosgene in a reactor and a production plant for carrying out said method. The discharged reaction material is provided in the form of a suspensi...  
WO/2004/026813A1
The invention relates to a method for producing aromatic diisocyanates by reacting phosgene with diamines in the gas phase. The reaction is carried out in a reaction chamber at moderate pressures, i.e. the pressure in said reaction chamb...  
WO/2004/014845A1
The invention relates to a method for producing organic isocyanates, said method consisting of the following steps: (a) a first partial quantity of chlorine containing < 400 ppm of free or bonded bromine and iodine is prepared; (b) a sec...  
WO/2003/099770A1
The invention relates to a continuous method for producing isocyanates by reacting primary amines with phosgene. The invention is characterized in that the reaction is carried out in a cascade of at least two tubular reactors and, after ...  
WO/2003/095419A1
The present invention relates to novel aromatic isocyanates obtained by partially hydrogenating naphthalene as well as the processes for preparing the same, and to their use as an isocyanate component in the production of polyurethanes.  
WO2003068359A3
The invention relates to an arrangement for carrying out chemical reactions, comprising at least one distillation column and/or at least one container, in addition to at least one circulation evaporator, which are connected to one anothe...  
WO/2003/084921A1
Disclosed is a rector for thermally cracking monofunctional and/or polyfunctional carbamates into the corresponding isocyanate and hydroxyl components in the liquid phase, comprising devices which feed heat into the reactor. Said devices...  
WO/2003/082803A1
A method of preparing diaminodiphenylmethane and higher homologues thereof from aniline and formaldehyde in the presence of heterogeneous solid acid catalysts selected from (a) delaminated zeolites and/or (b) metal silicate catalysts hav...  
WO/2003/074477A1
The invention relates to a method for producing isocyanates made from carbamic acid esters, wherein (i) a mixture containing a single or multiple functional carbamic acid ester is continually introduced into a fission reactor or a cascad...  
WO/2003/068559A1
A dump body (10) for heavy vehicles comprises a casing with a base or bed (12) surmounted by a front wall (13) and two sides (14a, 14b) and which can be raised by any appropriate linear actuator, and a rear part (16). At the front portio...  
WO/2003/068359A2
The invention relates to an arrangement for carrying out chemical reactions, comprising at least one distillation column and/or at least one container, in addition to at least one circulation evaporator, which are connected to one anothe...  
WO/2003/045900A1
The invention relates to a method for producing isocyanates by reacting primary amines with phosgene in the gaseous phase. Said method is characterized in that the reaction of amine and phosgene occurs in a reaction channel, the internal...  
WO/2003/042170A1
The invention relates to a method for producing isocyanates by the reaction of the corresponding primary amines with phosgene in an inert solvent, whereby 0.01 to 50 mole % of a sulphonic acid amide is used, based on the total amount of ...  
WO/2003/037502A1
A chemical reactor and method of using the same. The reactor comprises first and second micro−engineered discrete flow passages (11, 15) for receiving chemical fluids. The first fluid passage (11) receives a first chemical fluid in whi...  
WO/2003/035606A1
The invention relates to a method for producing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent. According to said method, between 0.01 and 50 mol. % of a phosphine oxide is used, in relation to...  
WO/2003/035607A1
The invention relates to a method for producing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent, while using 0.01 to 50 mole percent of a sulfoxide, a sulfone or mixtures thereof, based on the t...  
WO/2002/102763A1
The invention relates to a method for producing isocyanates by reacting primary amines with phosgene, and using isocyanate as the solvent. The inventive method is characterized in that a portion or the entire quantity of the isocyanate u...  
WO/2002/100915A1
A process for the continuous production of a polyisocyanate involving feeding a diisocyanate and an adduct containing at least one active hydrogen atom into a mixing zone, reacting the feedstocks to produce a polyisocyanate in an incline...  
WO/2002/094432A1
The invention relates to a method for carrying out the distillation or reactive distillation of a mixture containing at least one toxic constituent, whereby the method is carried out in a column provided with an ordered packing comprisin...  
WO2002055487A3
The invention concerns a method for using a carbamoyl fluoride as fluorinating agent. Said method consists in treating a derivative bearing a halogen-containing carbon, with a carbamoyl fluoride at a temperature not less than 70 DEG C an...  
WO/2002/070581A1
The invention relates to a method for producing MD1, comprising the following steps: A) aniline and formaldehyde are made to react in the presence of an acid to form methylene(diphenyldiamene) and polymethylene polyphenylene polyamine, t...  
WO/2002/055487A2
The invention concerns a method for using a carbamoyl fluoride as fluorinating agent. Said method consists in treating a derivative bearing a halogen-containing carbon, with a carbamoyl fluoride at a temperature not less than 70 °C and ...  
WO/2002/050020A1
The invention relates to a method for producing isocyanates, whereby at least one compound containing carbamate groups is converted into an isocyanate at a reaction temperature above the boiling point of an isocyanate thus arising. The r...  
WO2002024634A3
A phosgene-free process for producing organic isocyanates reacts an organic formamide with a diorganocarbonate and thermolyzing the reaction product to obtain the corresponding organic isocyanate. Byproducts may be cycled back to the rea...  
WO2002012176A3
The invention relates to a novel method for removing chlorine compounds from organic isocyanates or isocyanate mixtures by carrying out a treatment and an extraction using near-critical and/or supercritical fluids.  
WO/2002/024634A2
A phosgene-free process for producing organic isocyanates reacts an organic formamide with a diorganocarbonate and thermolyzing the reaction product to obtain the corresponding organic isocyanate. Byproducts may be cycled back to the rea...  

Matches 251 - 300 out of 1,746