摘要:
A dicarboxylic compound complying with one of the general formulae: ##SPC1##In which R is a divalent radical selected from the aliphatic, alicyclic and aromatic radicals, the aliphatic containing 1-20 carbon atoms and the other containing from 5 to 20 carbon atoms, R.sup.1 is selected from the hydrogen atom and the alkyl and cycloalkyl groups containing from 1 to 10 carbon atoms and R.sup.2 is selected from the alkyl and cycloalkyl groups containing from 1 to 10 carbon atoms, the polyester resins derived therefrom being usable as enamelling composition, particularly for coating metal wires.
摘要:
New polyamide-ester resins, their manufacture and the new compositions manufactured therefrom, the latter being useful for enameling metal conductors. The enameled conductors are stable at relatively high temperatures.The resins are manufactured from a polycarboxylic component, a part of which is a 2,4-quinazoline dione dicarboxylic compound, a polyamine component and a polyhydroxy component.
摘要:
New dicarboxylic compounds of the formula: ##STR1## where R is a hydrogen atom or an alkyl, cycloalkyl or aryl group of 1 - 10 carbon atoms, may be used for manufacturing polyester-imides and copolyester-imides -- Varnishes obtained therefrom are useful for coating electric metal conductors.
摘要:
The present invention relates to a heterogeneous anionic polymerization process, catalysed by a metallic insertion graphitic compound. According to the invention, the alkaline metal chosen for the insertion compound is lithium, and the insertion compounds are of binary or ternary type; in the latter case, the insertion compound may comprise an aromatic hydrocarbon also inserted within the graphitic structure. The invention relates in particular to the homopolymerization of butadiene or isoprene, and to the copolymerization of isoprene-styrene.
摘要:
The present invention relates to a heterogeneous anionic polymerization process, catalyzed by a metallic insertion graphitic compound. According to the invention, the alkaline metal chosen for the insertion compound is lithium, and the insertion compounds are of binary or ternary type; in the latter case, the insertion compound may comprise an aromatic hydrocarbon also inserted within the graphitic structure. The invention relates in particular to the homopolymerization of butadiene or isoprene, and to the copolymerization of isoprene-styrene.
摘要:
The present invention relates to a heterogeneous anionic polymerization process, catalyzed by a metallic insertion graphitic compound. According to the invention, the alkaline metal chosen for the insertion compound is lithium, and the insertion compounds are of binary or ternary type; in the latter case, the insertion compound may comprise an aromatic hydrocarbon also inserted within the graphitic structure. The invention relates in particular to the homopolymerization of butadiene or isoprene, and to the copolymerization of isoprene-styrene.