标题翻译:聚合物MIT EINER CARBONGRUPPE,VERFAHREN ZUR HERSTELLUNG DAVON UND VERWENDUNG DAVON,VERFAHREN ZUR HERSTELLUNG EINESGETRÄGERTENKATALYSATORS UND VON ANTIBIOTISCHEN PENEM-ZWISCHENPRODUKTEN
摘要:
A polymer containing a carboxyl group, a preparation method and an application thereof, a supported catalyst and a preparation method thereof and preparation methods of a penem antibiotic intermediate are disclosed. The polymer is prepared by polymerizing three monomers with different structures. The carboxyl group-containing polymer is a cross-linked polymer, and a polymer chain contains a large number of benzene rings, which can improve the rigidity and hardness of the polymer, thus effectively improving the mechanical properties of the polymer. Meanwhile, in the polymer, the carboxyl group is used as a main functional group, and is used as a carrier to prepare, by means of a coordination reaction between the carboxyl group and a heavy metal, a supported metal catalyst which has better connection stability between the metal and the polymer. The above two factors can improve the stability of the supported metal catalyst, such that the catalyst can be recycled without losing the catalytic activity. Meanwhile, loss of a heavy metal active ingredient and production cost can be reduced.
摘要:
The present invention relates to a method for production of a chromatography material. More closely, the invention relates to a method for production of a reverse phase chromatography (RPC) material comprising the following steps: introduction of unsaturated groups onto porous carbohydrate particles and grafting of styrenic monomers on said particles comprising an unsaturated group.
摘要:
Described herein are methods for the production of oligosaccharides, including functionalized oligosaccharides, from one or more sugars, such as one or more monosaccharides, using polymeric and solid-supported catalysts containing acidic and ionic groups. Also provided are the oligosaccharide compositions, including functionalized oligosaccharide compositions, obtained using the methods.
摘要:
A process for preparing a polymer-encapsulated carbon black material is described. The process comprises: (a) preparing a mixture of an ionic monomer, a stabilizer and carbon black in water; (b) adding an initiator; (c) adjusting the temperature to a temperature above room temperature; and (d) adding at least one other monomer and a charge control agent to obtain the material. The process is performed under continuous stirring. The polymer-encapsulated carbon black material is surfactant-free and is used in the production of toners.
摘要:
The present application is directed to a crosslinkable copolymer comprising styrene and 4-vinyl benzocyclobutene monomers and at least one alkoxysilane group, a method for generating an ultrathin copolymer film, which contains at least one crosslinked copolymer as defined herein, on a silicon-containing substrate, a composition or film comprising at least one copolymer as defined herein, as well as the use of this copolymer or composition containing it for electrical insulation and/or bonding of silicon-containing substrates.
摘要:
The invention relates to production of sorbents. The proposed method of production involves acylation of a macroporous styrene-divinylbenzene copolymer in the presence of the Friedel-Crafts catalyst - aluminum chloride. The acylation reaction is carried out using acetyl chloride in a dichloroethane solvent at boiling the solution. This is followed by phosphorylation of the obtained acylated copolymer with phosphorus trichloride at room temperature; the product is hydrolyzed with water, washed and dried. The technical result consists in production of a complexing adsorbent highly selective for scandium and simplification of the production process.