PROCESS FOR THE CONTINUOUS DYEING OF ARTICLES MADE OF POLYACRYLONITRILE OR COPOLYMERS CONTAINING ACRYLONITRILE

摘要

1,204,426. Hydrogenated thiophen-1,1-dioxide compounds. FARBENFABRIKEN BAYER A.G. 30 Oct., 1968 [11 Nov., 1967; 29 Nov., 1967], No. 51517/68. Heading C2C. [Also in Division D1] Partially or completely hydrogenated thiophen-1,1-dioxide compounds especially of Formula A: in which m is 0-5, k is 0-3, p is 1-8, X and Y independently are oxygen or sulphur, R1 is a C 1-6 alkylene radical which may be substituted by hydroxy, alkoxy or alkylmercapto group or halogen, R11 is a hydrocarbon radical linked via a single or double bond and may be substituted by alkyl, hydroxy, alkoxy, amino, carbonyl or carbonamide group; a fused carbocycle or heterocycle; a halogen atom; a functional organic group linked via a single or double bond; an oxygen or sulphur atom, Z 1 is the radical of a polyfunctional compound in which one or more functional groups may be replaced with the grouping of Formula B4: are prepared by known processes, e.g. base catalysed addition of alcohols, mercaptans or amines on to thiophen or 2,5-dihydrothiophen- 1,1-dioxides or by addition of sodium hydrogen sulphide on to 2,5-dihydrothiophen-1,1-dioxide and subsequent alkylation or acylation of the resultant mercaptans or by reaction of 2,3- dichloro - tetrahydrothiophen - 1,1 - dioxide with 2 moles of alkali metal alcoholate or alkali metal mercaptide. In examples many compounds of the above type are specified.