[EN] SILICA-BASED ZINC CATALYSTS. THEIR PREPARATION AND USE IN THE ALKOXYCARBONYLATION OF AMINES<br/>[FR] CATALYSEURS AU ZINC À BASE DE SILICE, LEUR PRÉPARATION ET LEUR UTILISATION DANS L'ALCOXYCARBONYLATION D'AMINES
申请人:COVESTRO DEUTSCHLAND AG
公开号:WO2018210711A1
公开(公告)日:2018-11-22
The present invention relates to silica-based heterogeneous zinc compounds which are suitable as catalysts in the reaction of amines with dialkyl carbonates to produce carbamates. The catalysts have the formula [SiO2]-CH2-CHR-X-COOZn[Y], wherein [SiO2] represents a silica carrier selected from the group consisting of ordered mesoporous silica and irregular amorphous narrow pore silica, R represents a moiety selected from the group consisting of hydrogen, -CH3, and -CH2CH3, preferably hydrogen, X is an aliphatic chain of 2 to 11 carbon atoms that optionally comprises ether moieties and [Y] represents a mono anion. The invention is also directed towards a method for the preparation of the aforementioned compounds and towards method for the alkoxycarbonylation of amines.
Aspartates containing ketimine-groups and their use in coating compositions
申请人:Bayer MaterialScience LLC
公开号:EP1518852A1
公开(公告)日:2005-03-30
The present invention relates to novel aspartates, their method of production and the use of these aspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers. The aspartaes are prepared by first reacting a di- or polyamine with an unsaturated ester and then reacting the resultant product with a ketone.
Hydrogenation of aromatic amines to alicyclic amines using a lithium aluminate-based catalyst
申请人:Vedage Ananda Gamini
公开号:US20070066849A1
公开(公告)日:2007-03-22
The present invention relates to processes for the catalytic hydrogenation of aromatic amines to their acyclic counterparts using a ruthenium catalyst on a lithium aluminate support. The hydrogenation process comprises contacting an aromatic amine with hydrogen in the presence of a ruthenium catalyst under temperature and pressure conditions suitable to effect ring hydrogenation. The process is especially useful for hydrogenating aniline to cyclohexylamine.
LINEAR GLYCIDYL CARBAMATE (GC) RESINS FOR HIGHLY FLEXIBLE COATINGS
申请人:NDSU RESEARCH FOUNDATION
公开号:US20150099128A1
公开(公告)日:2015-04-09
This invention relates to coating compositions comprising a linear glycidyl carbamate (GC) resin and a curing agent. The linear GC-resins were synthesized using linear and cycloaliphatic diisocyanates and a combination of diols and optional triols with glycidol. The combination of linear diisocyanates and diols introduces a more linear structure in the GC-resin compositions.
[EN] HETEROGENEOUS CATALYSTS FOR THE SYNTHESIS OF CARBAMATES<br/>[FR] CATALYSEURS HÉTÉROGÈNES POUR LA SYNTHÈSE DES CARBAMATES
申请人:COVESTRO DEUTSCHLAND AG
公开号:WO2019185608A1
公开(公告)日:2019-10-03
The present invention relates to a catalyst for preparing carbamates, in particular aromatic carbamates, comprising a binary oxide having the formula Li_xMx02, wherein 1. is a metal selected from the lanthanoid series and M is a metal selected from the group consisting of Sc, Y, Ti, Zr, Hf, metals from the lanthanoid series and metals from the actinoid series, and wherein x ranges from 0.01 to 0.05. The present invention also relates to a method for producing said catalysts and a method of utilizing said catalysts in the production of carbamates, in particular aromatic carbamates.