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Patent Searching and Data


Matches 351 - 400 out of 2,023

Document Document Title
WO/2002/012176A2
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/2002/008173A1
A process for the manufacture of polyisocyanate particles comprising the steps of: (i) melting the polyisocyanate; (ii) forming the molten polyisocyanate paste into drops on a cooling surface; (iii) forming solid pastilles by cooling the...  
WO/2002/002217A1
The invention relates to a method for mixing educt streams (1, 2; 5) in order to produce a product stream (10), using a mixer configuration (15, 16) that is provided with a number of educt feeding sites. An excess component stream of an ...  
WO/2002/000751A1
An isocyanate component with an isocyanate functionality from t15 to 40 % obtained from the reaction of at least one organic isocyanate which is at least bifunctional, with a secondary amine having general formula (I): wherein R¿1? and ...  
WO/2002/000609A2
Formula (I) compounds are described where the groups are as defined in the description, as well as processes for their preparation and their use as medicaments, particularly for the preparation of medicaments with phosphodiesterase IV in...  
WO/2001/091898A1
The invention relates to a method for mixing educt streams in a mixer (13) for phosgenating amines. According to said method, the reaction product (3) is led off in a closed manner and the educt streams (1, 2) contain organic solvents. T...  
WO/2001/064628A1
Process for the preparation of organic polyisocyanates by decomposing the corresponding organic polycarbamates into organic polyisocyanates and alcohols, characterised in that the alcohol and at least part of either the diisocyanates or ...  
WO/2001/060885A1
The invention relates to polyisocyanates of general formula (I), wherein R and R' are the same or different and mean alkyl groups having 1-4 C atoms and n is a number that amounts to 1.5 to 5 on average. The invention also relates to a m...  
WO/2001/056962A1
Perfluoroisopropylbenzene derivatives of the general formula (I) or salts thereof, useful as intermediates or raw materials in the synthesis of various industrial materials including agricultural chemicals, drugs and surfactants, wherein...  
WO/2001/056977A1
Integrated process for the preparation of aromatic isocyanates comprising: the reaction between an aromatic amine and an organic carbonate in the presence of a catalyst selected from organic and inorganic salts of a metal selected from Z...  
WO/2001/047873A1
The invention relates to a novel method for producing N-substituted 2,4-diamino-5-fluoro benzonitriles that are known as intermediates in the production of herbicides. The invention further relates to novel N-substituted 4-bromo-6-fluoro...  
WO/2001/044204A1
Disclosed are phenoxy and thiophenoxy acrylic acid compounds of general formula (I), wherein Z, V and W, independently from one another, mean oxygen or sulphur and Het stands for an unsaturated, five- or six-membered, heterocyclic radica...  
WO/2001/042190A1
The instant invention is a route to stereospecific 3-substituted 5-membered ring isomers of Formula (A). The final products are useful as agents in the treatment of epilepsy, faintness attacks, hypokinesia, cranial disorders, neurodegene...  
WO/2001/017951A1
The invention relates to a method for producing aliphatic, cycloaliphatic, araliphatic and aromatic monoisocyanates and oligoisocyanates by phosgenating the corresponding primary amines at normal pressure. The inventive method is charact...  
WO/2001/002347A1
The invention concerns a method for dehydrogenofluorination for transforming an aromatic carbamoyl fluoride into the corresponding isocyanate. Said method is characterised in that it consists in subjecting said carbamoyl fluoride to a te...  
WO/2001/000569A1
The invention relates to light isocyanates, to a method for producing light isocyanates and to their use in urethane compounds, especially in polyurethane, for example polyurethane foams.  
WO/2000/078734A1
The invention relates to novel substituted phenyluracils of general formula (I) in which m, n, Q, R?1¿, R?2¿, R?3¿, R?4¿, R?5¿, X and Y have the meanings cited in the description. The invention also relates to methods for producing ...  
WO/2000/055117A1
The invention relates to new and known compounds as well as methods for preventing the attachment of aquatic organisms to surfaces which are submerged for extensive periods of time in water. More particularly, this invention relates to t...  
WO/2000/042009A1
The invention concerns the use of isocyanates obtained from amino acid derivatives for preparing and optionally isolating stable activated carbamic acid derivatives, or stable activated carbamates.  
WO/2000/039183A1
The invention relates to compounds comprising isocyanate groups or capped isocyanate groups, allophanate groups and radically polymerizable C-C double covalent bonds, whereby the C-C double covalent bonds are activated by a carbonyl grou...  
WO/2000/002866A1
The invention relates to novel substituted phenyl uracils of general formula (I) wherein n, Q, R?1¿, R?2¿, R?3¿, R?4¿, R?5¿ and X have the meanings given in the description, to methods and novel intermediate products for producing s...  
WO/1999/065868A1
The invention relates to a method for treating distillation residues from the synthesis of toluene diisocyanate by reacting the distillation residues with water. The invention is characterized in that the TDI distillation residues are re...  
WO/1999/054289A1
The invention relates to a method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine ...  
WO/1999/048863A1
The present invention relates to the use of 3.5-Di.tert.-butyl-4-hydroxy-phenyl propionic acid esters for stabilisation of organic polyisocyanates.  
WO/1999/047493A1
Organic carbamates are prepared by the reaction of organic amines (preferably aromatic polyamines) with heteroatom-substituted alkyl carbonates. Said carbamates can be thermolysed into the corresponding isocyanates.  
WO/1999/041218A1
The present invention relates to a method of making alpha-methylstyrene dimers by combining a cobalt catalyst, a free-radical initiator and an alpha-methylstyrene monomer, in an inert atmosphere, to form a mixture. The mixture is heated ...  
WO/1999/040059A1
The invention relates to a method for the production of methylenedi(phenylamine) by reacting aniline with formaldehyde in the presence of acid catalysts. The method is characterized in that aniline and optionally an acid catalyst are tre...  
WO/1999/020615A2
The invention relates to substituted phenyl carbamates of formula (I), wherein E represents a group A or B, # characterises the bond with the phenyl ring, and R?$g(a)¿, R?$g(b)¿, Y, n, T, and Z have the meanings given in the description.  
WO/1998/056847A1
Rigid polyurethane foams are prepared from an isocyanate composition containing diphenylmethane diisocyanate, three ring oligomers of polyphenylene polymethylene polyisocyanate and higher homologues of polyphenylene polymethylene polyiso...  
WO/1998/054129A1
Method for the preparation of polymeric isocyanates by decomposing polymeric ureas of the formula: R?1�(NHCONR?2�R?3�)�x? wherein x is at least 2, R?1� is an organic radical of valency x and R?2� and R?3� are monovalent org...  
WO/1998/054128A1
Method for the preparation of aromatic monomeric or polymeric isocyanates by decomposing aromatic monomeric or polymeric carbamates of the formula R?1�(NHCOOR?2�)�x? wherein x is at least 1, R?1� is an aromatic radical of valency...  
WO/1998/042681A1
The invention relates to novel hydroximic acid derivatives of formula (I) and their salts, wherein X = O, S; Y = O, S; R?1� = H, C�1?-C�4?-alkyl, NH�2?, C�1?-C�4?-alkylamino or di(C�1?-C�4?-alkyl)amino; R?2� = C�1?-C...  
WO/1998/040337A1
An adamantane derivative having a functional group such as nitro, amino, hydroxyl, carboxyl, hydroxymethyl or isocyanato is oxidized with oxygen in the presence of an imide compound of general formula (2) (such as N-hydroxyphthalimide) o...  
WO/1998/031662A1
3-Isocyanatomethyl-1,6-hexamethylene diisocyanate useful in the production of polyurethane resins such as polyurethane polyisocyanates; a process for producing 3-isocyanatomethyl-1,6-hexamethylene diisocyanate, characterized by reacting ...  
WO/1998/030329A1
At least one functional group selected between nitro and carboxyl groups can be introduced into a substrate by bringing the substrate into contact with at least one reactant selected from among (i) nitrogen oxides and (ii) carbon monoxid...  
WO/1998/025889A1
The invention concerns a method of separating a crystallizable organic compound from a liquid compound mixture by means of a single- or multi-stage suspension crystallization method, the crystals behind the final stage being separated by...  
WO/1998/025680A1
The invention concerns a method of separating organic compounds by single- or multi-stage suspension crystallization, each stage consisting of a crystallizer, optionally a crystallizer vessel, and a filter (7) for separating the liquid p...  
WO/1998/019993A1
The invention concerns a process for obtaining pure isocyanate isomers from an isocyanate isomer mixture by crystallization in suspension and separation of isomerically pure crystals. The process is characterized in that, before separati...  
WO/1998/014425A1
This invention describes a method of forming bisulphite adducts of aliphatic isocyanates bearing an aromatic moiety by mixing an aqueous solution of a bisulphite adduct forming agent with a solution of an isocyanate bearing an aromatic m...  
WO/1997/036857A1
A method of synthesizing multi-tier cascade polymers and the polymers made thereby are formed by reacting at least one tier of a polymer with a functionalized isocyanate having the following formula: O = C = N - C(CH2-R)3 with R being se...  
WO/1997/031904A1
The invention concerns compounds of formula (I) and their salts which are suitable as herbicides and plant growth regulators, R1 to R6, Y1, Y2, Y3, m and n being defined as in claim 1. These compounds can be prepared in similar manner to...  
WO/1997/025308A1
Products prepared by reacting polyisocyanates with alkenyl or alkynyl compounds; then with perfluoroalkyl iodides and dehydroiodinating the product.  
WO/1997/024320A1
A process and a system produces isocyanate and converts anhydrous hydrogen chloride, which is a by-product of isocyanate production, to chlorine gas in an electrochemical cell. The chlorine is recycled to the isocyanate process. Any unre...  
WO/1997/017323A1
The invention concerns a method of producing organic di- and/or polyurethanes by reacting organic di- and/or polyamines (a) with urea and/or carbamic acid alkyl esters (b) and alcohols (c) in the presence of soluble zirconium compounds, ...  
WO/1997/014671A1
The present invention is directed to certain novel compounds represented by structural formula (I) or a pharmaceutically acceptable salt thereof, wherein R3, R6, R7, R8, R11, R12, R13, A, Q, W, X, Y, Z and n are defined herein. The inven...  
WO/1997/007092A1
Solid polyisocyanate particles having a particle size distribution index (PSDI) of less than 1.5 and which are preferably substantially free of induced impurities. Also claimed is a method for the preparation of such particles by prilling.  
WO/1997/002253A1
The invention pertains to benzylhydroxylamines of formula (I), wherein X is -N(R7)-O-; Y is O, S; R1 is halogen, CN, NO2, CF3; R2 is H, halogen; R3 is H, NH2, CH3; R4 is H, halogen, C1-C6 alkyl, C1-C6 alkyl halide, C1-C6 alkyl thio, C1-C...  
WO/1997/002255A1
Bis-oxime derivatives of formula (I) in which A is (a) or (b), where W is oxygen or sulfur, and the other substituents defined as follows: R1 = hydrogen, C1-C4alkyl; cyclopropyl; R2 = hydrogen, C1-C6alkyl; halo(C1-C6) alkyl; C2-C6alkoxya...  
WO/1996/026915A1
Fluorinated diaminodiphenyl methane compounds and conversion of these compounds into polyols and polyisocyanates, which in turn can be used in the preparation of polyurethane foams, powders or aerogels.  
WO/1996/025444A1
A process for producing polyisocyanates containing one or more biuret groups, by reacting a) an aliphatic or cycloaliphatic isocyanate with several isocyanate groups (isocyanate a) with b) a tertiary alcohol or a mixture of water and a t...  

Matches 351 - 400 out of 2,023