Patent application number | Description | Published |
20080249202 | Method for the Production of Polyisocyanates - Process for preparing polyisocyanates involving the removal of a solvent-stream enriched in volatile, aromatic, non-isocyanate-group-containing contaminants from the polyisocyanate production process. | 10-09-2008 |
20080312405 | Process for Preparing Diaminodiphenylmethanes - Process for preparing diamino diphenyl methane and poly-(diamino diphenyl methane) comprising reacting aniline with formaldehyde in the presence of hydrogen chloride added in the gaseous form wherein the aniline contains 0.1 to 7 wt %, preferably 2 to 5 wt % of a protic chemical, preferably water. | 12-18-2008 |
20100191010 | PROCESS FOR THE SYNTHESIS OF CARBAMATES USING CO2 - Process for the synthesis of non cyclic carbamate derivatives from amine compounds, alcohols and CO | 07-29-2010 |
20100204510 | PROCESS FOR PRODUCTION OF DI- AND POLYAMINES OF THE DIPHENYLMETHANE SERIES - Process for the production of di- and poly(diamino diphenyl methane) comprising the steps of | 08-12-2010 |
20110045553 | PROCESS FOR CONVERTING TRYPTOPHAN INTO KYNURENINE - A process for converting tryptophan into kynurenine. The conversion of tryptophan into kynurenine is carried out by irradiating a substance comprising tryptophan with electromagnetic radiation comprising waves with wavelength in the range of 10 nanometer to 750 nanometer. | 02-24-2011 |
20110190535 | PROCESS FOR PREPARING POLYAROMATIC POLYISOCYANATE COMPOSITIONS - Process for the preparation of polyaromatic polyamines comprising the step of reacting formaldehyde with at least one monoaromatic monoamine and at least one monoaromatic compound containing at least two amino functions in the presence of an acidic catalyst where a) the total amount of di-aromatic compounds in the polyaromatic polyamine mixture is in the range from about 25 wt % to about 50 wt % and b) the amount of monoaromatic compound containing at least two amine functions is in the range 5 to 30 mole % relative to 100 mole % of the total amount of monoaromatic monoamines and c) the amount of acidic catalyst used in the preparation of the polyaromatic polyamine mixture is less than about 0.4 moles per mole of formaldehyde or formaldehyde equivalents. | 08-04-2011 |
20110210466 | POLYISOCYANATE COMPOSITION USED FOR BINDING LIGNOCELLULOSIC MATERIALS - Polyisocyanate composition for binding lignocellulosic materials comprising a methylene bridged polyphenyl polyisocyanate composition having a having a relative content of minor trifunctional isocyanate isomers of at least 17 wt % based on the total trifunctional isocyanate content. | 09-01-2011 |
20110224395 | PROCESS FOR MANUFACTURING ISOCYANATES - The present invention relates to a process for manufacturing isocyanates from an amine compound. The process comprises the steps of
| 09-15-2011 |
20110224456 | PROCESS FOR THE SIMULTANEOUS PRODUCTION OF DIFFERENT MIXTURES OF DIISOCYANATE ISOMERS OF THE DIPHENYLMETHANE SERIES - Process for the simultaneous and continuous production of two different mixtures of predominantly 4,4′-MDI and 2,4′-MDI in a single-step suspension melt crystallisation process whereby a mixed diisocyanate feed stream [MIx] is used to produce simultaneously two mixed diisocyanate streams [MIy and MIz] wherein x=80 to 92, y=97 to 99 and z=60 to 80 preferably x=82 to 88, y=97.2 to 98.5 and z=63 to 70 where x, y and z are percentages by weight of the 4,4′-MDI isomer contained in the diisocyanate isomer mixture. | 09-15-2011 |
20110282099 | PROCESS FOR THE PRODUCTION OF METHYLENE-BRIDGED POLYPHENYL POLYAMINES - A process for providing methylene-bridged polyphenyl polyamines from aniline and formaldehyde according to the invention comprises the subsequent steps of | 11-17-2011 |