摘要:
The invention concerns a method for purifying cyclic lactams containing 6 to 12 carbon atoms and containing chlorolactams as impurities, by hydrogenation reaction in the presence of a metal catalyst, a solvent and a compound having a radical -NH2, -NH or -N
摘要:
The invention concerns ion liquids derived from the reaction of at least a halogenated or oxyhalogenated Lewis acid based on titanium, niobium, tantalum, tin or antimony with an organic salt of formula X+A- wherein A- is a halide or hexafluoroantimoniate anion and X+ a quaternary ammonium, quaternary phosphonium or ternary sulphonium cation. Said liquids are in particular useful for liquid phase HF fluorination of saturated or unsaturated compounds with C-CI bonds.
摘要:
The present invention concerns a method for production of foams of thermoplastic polymer such as polyethylene, polypropylene, polystyrene, polyvinyl chloride. More specifically its goal is a method for production of thermoplastic foams comprising a premixing step of at least a thermoplastic polymer in the form of a divided solid with at least an ester of azocarboxylic acid.
摘要:
The invention relates to a reinforced fluoropolymer plate comprising a fluoropolymer layer on one of the faces thereof and a carbon fibre sheet on the other face of same, whereby at least part of the carbon fibre sheet is impregnated with flouropolymer. The invention also relates to an acid-corrosion-resistant chemical reactor comprising said plates, the production methods thereof and the uses of same in processes in superacid media.
摘要:
The invention concerns a method for purifying cyclic lactams containing 6 to 12 carbon atoms and containing chlorolactams as impurities, by hydrogenation reaction in the presence of a metal catalyst, a solvent and a compound having a radical -NH2, -NH or -N
摘要:
The invention relates to a method for preparing a lauryl lactam consisting in carrying out a Beckmann rearrangement of a cyclododecanone oxime. Said method is carries out in a gaseous phase at a temperature ranging from 180 to 450 °C in the presence of a microporous material having a three-dimensional main inorganic structure consisting of tetrahedrons bonded by a common edge called zeolithe.
摘要:
The invention relates to a reinforced fluoropolymer plate comprising a fluoropolymer layer on one of the faces thereof and a carbon fibre sheet on the other face of same, whereby at least part of the carbon fibre sheet is impregnated with flouropolymer. The invention also relates to an acid-corrosion-resistant chemical reactor comprising said plates, the production methods thereof and the uses of same in processes in superacid media.