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    • 23. 发明授权
    • Polymerizable compounds containing tribromomethyl groups
    • 含有三溴甲基的可聚合化合物
    • US4158097A
    • 1979-06-12
    • US782613
    • 1977-03-30
    • Herbert NaarmannKlaus Penzien
    • Herbert NaarmannKlaus Penzien
    • C08F20/24C07C69/54
    • C08F20/24
    • New compounds containing tribromomethyl groups, of the general formula ##STR1## WHEREIN X is chlorine or bromine, R is hydrogen or methyl and R.sup.1 is hydrogen or a group of the formula --COO--CHX--CBr.sub.3 and a process for their preparation. The compounds may be used for the manufacture of homopolymers or copolymers which find diverse uses, eg. for the manufacture of moldings, coatings or adhesives. The compounds are manufactured by reacting the corresponding acid chlorides or acid bromides with equivalent amounts of tribromoacetaldehyde. The acid chlorides and bromides have the formula ##STR2## wherein X is chlorine or bromine, R is hydrogen or methyl and R.sup.2 is hydrogen or --COX. The reaction is carried out in the presence of from 0.1 to 10 per cent by weight of a Lewis acid, preferably AlBr.sub.3 or FeBr.sub.3, at from 0 to 80.degree. C., generally with reaction times of from 1 to 10 hours, preferably from 2 to 3 hours. The reaction is carried out without solvents or, with particular advantage, in a solution, of about 50 per cent strength, in an inert aliphatic, cycloaliphatic or aromatic solvent, eg. hexane mixtures, octane mixtures, cyclohexane or toluene. From 0.1 to 10 per cent by weight of magnesium oxide is added to the reaction mixture, prior to the distillation to achieve good yields and compound purity.
    • 含有三溴甲基的新化合物,通式为:其中X为氯或溴,R为氢或甲基,R 1为氢或式-COO-CHX-CBr 3基团及其制备方法。 这些化合物可以用于制造均聚物或共聚物,其可以找到不同的用途,例如。 用于制造模制品,涂料或粘合剂。 该化合物通过使相应的酰氯或酸性溴化物与等量的三溴乙醛反应制备。 酰氯和溴化物具有式“其中X是氯或溴,R是氢或甲基,R 2是氢或-COX”。 反应在0.1至10重量百分比的路易斯酸,优选AlBr 3或FeBr 3存在下进行,在0至80℃下,通常反应时间为1至10小时,优选2 至3小时。 该反应在惰性脂族,脂环族或芳族溶剂(例如)中没有溶剂或特别有利的是在约50%的强度溶液中进行。 己烷混合物,辛烷混合物,环己烷或甲苯。 在蒸馏之前,将0.1至10重量%的氧化镁加入到反应混合物中以获得良好的收率和化合物纯度。