摘要:
The invention relates to a process for the production of crosslinked fibres or filaments by spinning an acrylonitrile copolymer containing at least 20 mVal of carboxyl groups per kg of polymer together with a polyoxazoline in a polar organic solvent and thereafter crosslinking at temperatures of from 120 to 190.degree. C.The invention also relates to crosslinked acrylonitrile fibres and filaments obtainable by this process.
摘要翻译:本发明涉及一种生产交联纤维或长丝的方法,该方法是通过将含有每千克聚合物至少20mV的羧基与聚恶唑啉一起在极性有机溶剂中纺丝的丙烯腈共聚物,然后在120至190℃的温度下进行交联 DEG C.
摘要:
O-(1-Fluoro-2-halogeno-ethyl)-thionophosphoric (phosphonic) acid esters of the formula ##STR1## in which R is alkyl, phenyl or phenyl carrying at least one substituent selected from the group consisting of halogen, alkyl, alkylthio and nitro,R.sup.1 is alkyl or alkoxy, andHal is halogen,Which possess arthropodicidal and nematicidal properties.
摘要:
A process for preparing 4,4'-dinitro-diphenyl carbonate which comprises adding to a sulfuric acid solution of diphenyl carbonate maintained at a temperature between -40 and +40.degree. C a nitric acid in a stoichiometric or slight stoichiometric excess.
摘要:
A process for the preparation of a (thio)phosphoric(phosphonic) acid ester of the formula ##EQU1## in which R.sub.1 is a straight-chain or branched alkyl, alkylmercapto or alkoxy group with up to 8 carbon atoms,R.sub.2 is alkyl with 1 to 8 carbon atoms optionally substituted by chlorine,R.sub.3, r.sub.4, r.sub.5 and R.sub.6 each independently is hydrogen or some other radical,X, y and Z each independently is oxygen or sulfur, andHal is chlorine or bromine,Which comprises reacting an olefin of the formula ##EQU2## in a one-step process with a halogenating agent and a (thio)phosphoric(phosphonic) acid ester of the formula ##EQU3##
摘要:
The present invention relates to biarylbisphosphines and intermediates thereof. Furthermore, the scope of the invention encompasses catalysts which can be prepared from the bisarylphosphines and their use in asymmetric syntheses.
摘要:
The invention relates to new (pre)catalysts of ruthenium complexes of formula 1, wherein L1, X1, X′2, R1, R2, R3, Z and n are as defined in claim 1. The novel ruthenium complexes of formula 1 are convenient (pre)catalysts for metathesis reactions and can be applied i.e. for ring-closing metathesis, cross metathesis or ene-ine metathesis reactions.
摘要:
The present invention relates to new compounds of formula 1, the preparation thereof, intermediate products for preparing them and the use of the compounds of formula 1 as catalysts in various metathesis reactions The new metathesis catalysts, which are obtained from readily accessible preliminary products, have a high activity and can be used for all kinds of metathesis reactions.
摘要:
The present invention relates to new heterocyclylmethyl-substituted pyrazole derivatives, processes for their preparation and their use as medicaments, in particular as medicaments for treatment of cardiovascular diseases.
摘要:
The present invention relates to new heterocyclylmethyl-substituted pyrazole derivatives, processes for their preparation and their use as medicaments, in particular as medicaments for treatment of cardiovascular diseases.
摘要:
The present invention relates to new heterocyclylmethyl-substituted pyrazole derivatives, processes for their preparation and their use as medicaments, in particular as medicaments for treatment of cardiovascular diseases.