The invention relates to halogenous polyesters with the recurrent general formula ##STR1## in which at least part of the R's, e.g. 1 to 100 mole-%, preferably 100 mole-%, or 2 to 10 mole-%, are of the general formulas ##STR2## and 0 to 99 mole-%, preferably 0 or 90 to 98 mole-%, of the R's correspond to a phenylene radical and/or a naphthylene radical and/or an alkylene radical of 3 to 10 carbon atoms and/or a cycloalkylene radical, and the R's represent an organic moiety which is contained in bivalent saturated alcohols and corresponds to a branched or unbranched saturated alkylene radical of 2 to 10 carbon atoms and/or to a cycloalkylene radical and/or which is derived from an alkyleneterephthalate containing hydroxyl groups, preferably an oligomeric ethyleneterephthalate and/or an oligomeric propyleneterephthalate and/or an oligomeric butyleneterephthalate, wherein Z represents the groups ##STR3## and X represents hydrogen, bromine or chlorine, wherein at least some of the X's are bromine or chlorine, and in which polyesters, in some cases, a portion of the R's are residues of unsaturated dicarboxylic acid derivatives which, together with ethylenically unsaturated comonomers, preferably styrene, are capable of forming peroxide-curable unsaturated polyester resin (UP resin) solutions, and their preparation as well as their use as fire-retardant molding compositions or articles, and also dicarboxylic acid esters some of which can be used in the preparation of the polyesters as well as the preparation of these dicarboxylic acid esters. Preferably the xylene nucleus in (2) is substituted by Br.sub.4.0 to 2.8 and Cl.sub.0 to 1.2.
本发明涉及具有重复通式##STR1##的卤代聚酯,其中至少部分的R,例如1至100摩尔%,优选100摩尔%或2至10摩尔%,具有以下通式##STR2##和0至99摩尔%,优选0或90至98摩尔%的R对应于苯基基团和/或
萘基基团和/或3至10个碳原子的烷基基团和/或环烷基团,其中R表示有机基团,该有机基团包含双价饱和醇中的分支或非分支饱和烷基基团,碳原子数为2至10,和/或环烷基团和/或源自含有羟基的烯二
甲酸酯,优选为寡聚
乙二酸酯和/或寡聚
丙二酸酯和/或寡聚
丁二酸酯,其中Z表示以下基团##STR3##,X表示氢、
溴或
氯,其中至少一部分的X为
溴或
氯,其中在某些情况下,聚酯中的一部分R是不饱和二
羧酸衍
生物的残基,该衍
生物与
乙烯基不饱和共聚物,优选为
苯乙烯,能够形成过氧化物可固化的不饱和聚酯
树脂(
UP树脂)溶液,以及它们的制备以及作为阻燃成型组合物或制品的用途,以及某些可用于聚酯制备以及这些二
羧酸酯制备的二
羧酸酯。优选的是(2)中的二
甲苯核被Br.sub.4.0至2.8和Cl.sub.0至1.2取代。