摘要:
The invention relates to a process for the production of chloroalkylsulfonyl isocyanates of the formula ##STR1## by a catalytically induced reaction of chlorosulfonyl isocyanate with one or more C.sub.2 -C.sub.4 -olefins. The reaction is carried out in a continuous manner in a tubular reactor.
摘要:
A trifluoroacrylate has been prepared by reacting hexafluoropropene with halogen fluorosulfate (halogen X:Cl, Br or I), eliminating the fluorosulfate CF.sub.3 --CFX--CF.sub.2 --OSO.sub.2 F to give the acid fluoride CF.sub.3 --CFX--COF, esterifying the acid fluoride and dehalogenating the product using a metal component.
摘要:
A process for the polymerization of vinyl chloride in an aqueous phase in the presence of oil-soluble free-radical initiators and a mixture of at least two high-molecular, surface-active suspending agents is described. This mixture is composed of 10 to 90% by weight (relative to the mixture) of at least one copolymer formed from vinyl acetate and a compound of the formulaR.sub.1 --CO--NR.sub.2 --CH.dbd.CH.sub.2wherein R.sub.1 is H or alkyl having 1 to 4 C atoms and R.sub.2 is H or methyl, and of 90 to 10% by weight (relative to the mixture) of at least one cellulose ether or a partially acetylated polyvinyl alcohol. Homopolymers, copolymers or graft copolymers of vinyl chloride which have an improved combination of properties are obtained.
摘要:
An aqueous clay base mud for deep drilling containing as a protective colloid a copolymer which is constituted by the formula I, II and III ##STR1## IN WHICH R.sub.1 and R.sub.2 each is hydrogen of --CH.sub.3 ; R.sub.3 is --CO--NH.sub.2, --CN or COOCH.sub.3 ; R.sub.4 is hydrogen, --CH.sub.3 or --C.sub.2 H.sub.5 ; R.sub.5 is --CH.sub.3 or --C.sub.2 H.sub.5 or R.sub.4 and R.sub.5 together represent a propylene group forming a pyrrolidone radical with the inclusion of the radical ##STR2## Me is ammonium, potassium, sodium or lithium and x is 5 to 50, y 25 to 92 and z 3 to 70,Or by the saponification products thereof and which contains the components in the parts by weight of the starting monomers indicated by the indices x, y and z.
摘要翻译:一种用于深钻孔的含水粘土基泥浆,其含有作为保护胶体的共聚物,其由式I,II和III I,其中R 1和R 2各自为 - CH3; R3为-CO-NH2,-CN或COOCH3; R4是氢,-CH3或-C2H5; R 5是-CH 3或-C 2 H 5或R 4和R 5一起代表形成吡咯烷酮基团的丙烯基,其中包括自由基Me是铵,钾,钠或锂,x是5至50,y 25至92和 z 3至70,或由其指示产品,其中包含由指标X,Y和Z指示的起始单位重量的零件中的组分。