Verfahren zur Herstellung von Sulfonsaeuregruppen enthaltenden Acrylnitrilmischpolymeren

摘要

1,132,665. Substituted urea derivatives. FARBENFABRIKEN BAYER A.G. 11 July, 1967 [28 July, 1966], No. 31847/67. Heading C2C. [Also in Division C3] Compounds of the formula wherein R and R1 each represents H or alkyl, n is 2, 3 or 4, A represents a di- or tri-valent aliphatic hydrocarbon radical with at least 2 carbon atoms or a di- or tri-valent aromatic hydrocarbon radical, X represents H, NH 4 , alkali metal or organic substituted ammonium, and m is 1 or 2, are prepared by reacting together the compounds of formula and where the various symbols have the meanings stated above. Several examples of the compounds of the first formula above are listed.