Patent application number | Description | Published |
20110319636 | METHOD FOR PREPARATION OF AMIDES FROM ALCOHOLS AND AMINES BY EXTRUSION OF HYDROGEN - The present invention relates to a method for preparation of carboxamides using alcohols and amines as starting materials in a dehydrogenative coupling reaction catalyzed by a ruthenium N-heterocyciic carbene (NHC) complex, which may be prepared in situ. | 12-29-2011 |
20130066112 | MULTI-AMINE FUNCTIONAL OLIGOMERS AND METHOD FOR PRODUCING THE SAME BY THE REDUCTION OF CORRESPONDING OXIMES - The invention relates to multi-amine functional oligomers and multi-oxime functional oligomers in addition to a method for producing the same by means of the co-polymerisation of carbonyl carriers such as olefins or dienes, reaction with hydroxylamine and a subsequent selective catalytic hydrogenation. | 03-14-2013 |
20140249289 | METHOD FOR PRODUCING LIGHT-COLOURED POLYISOCYANATES - The invention relates to a method for producing light-coloured polyisocyanates by phosgenation of mixtures comprising MDA and polycyclic aromatic polyamines that have o-phenylenediamine units incorporated via methylene bridges. The invention further relates to the polyisocyanate mixtures obtainable by this method. | 09-04-2014 |
20140275371 | PROCESS FOR PREPARING OLEFIN-CO TERPOLYMERS - The present invention relates to a process for preparing olefin-CO terpolymers with the steps of:
| 09-18-2014 |
20140275475 | SEMIBATCHWISE PROCESS FOR PREPARING OLEFIN-CO COPOLYMERS - A process for preparing olefin-CO copolymers with the steps of:
| 09-18-2014 |
20150322213 | NCO-MODIFIED POLYOXYMETHYLENE BLOCK COPOLYMERS - The invention relates to a method for producing NCO-modified polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms to obtain an intermediate product. The intermediate product obtained is reacted further with an isocyanate to obtain an NCO-modified polyoxymethylene block copolymer. The invention also relates to NCO-modified polyoxymethylene block copolymers obtained by a method of this type and to the use of said copolymers for producing polyurethane polymers. | 11-12-2015 |
20150337070 | METHOD FOR PRODUCING FORMALDEHYDE/CO2 COPOLYMERS - The invention relates to a method for producing non-alternating formaldehyde/CO2 copolymers, said method comprising the step of reacting formaldehyde or a compound that releases formaldehyde with carbon dioxide in the presence of a catalyst system. Said method is characterised in that the catalyst system comprises a Lewis acid component and a basic component, the Lewis acid component being at least temporarily coordinatively unsaturated under reaction conditions and the basic component having a pKb value of >=0. | 11-26-2015 |
20150368396 | FUNCTIONALIZED POLYOXYMETHYLENE BLOCK COPOLYMERS - The invention relates to a method for producing functionalized polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms, to obtain an intermediate product. The intermediate product obtained is subsequently reacted with a cyclic carboxylic acid ester or carbonic acid ester, thus obtaining a functionalized polyoxymethylene block copolymer. The invention further relates to functionalized polyoxymethylene block copolymers obtained by such a method and to the use of said copolymers. | 12-24-2015 |