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    • 23. 发明授权
    • Lactam melts having increased viscosity and their use
    • 内酰胺熔化粘度增加及其用途
    • US5264479A
    • 1993-11-23
    • US49640
    • 1993-04-20
    • Hans-Detlef HeinzFriedrich Fahnler
    • Hans-Detlef HeinzFriedrich Fahnler
    • C08L77/00C08L77/02C08F212/34C07D223/10C07D225/02
    • C08L77/02C08L77/00
    • The invention relates to lactam mixtures which give lactam melts having increased viscosity, to their production and to their use, preferably in the activated anionic polymerization of lactams (to cast polyamides). According to the invention, certain unsaturated aromatic vinyl compound/diene block copolymers (B) which dissolve in the lactam melt are added to the lactam (melt)s (A) in quantities of 1 to 15% by weight, a component (C) which is compatible with the diene block copolymers (B) and which dissolves completely or partly in the lactam melt optionally being added as an additional component. The block copolymers (B) used contain 10 to 85% by weight aromatic vinyl units and 15 to 90% by weight diene units. The block copolymers (B) may even be partly hydrogenated, epoxidized or grafted.The preferred lactam is .epsilon.-caprolactam.Lactam melts of increased viscosity are particularly suitable for taking up reinforcing materials and fillers (D) and for the production of filled cast polyamides.The invention also relates to the use of lactam melts thus thickened, more particularly lactam melts containing fillers/reinforcing materials, in a process for the production of polyamides and also to corresponding polyamide moldings, more particularly by the anionically activated casting process.
    • 本发明涉及内酰胺混合物,该内酰胺混合物具有增加的粘度,其生产和使用的内酰胺熔体,优选在内酰胺(至浇铸聚酰胺)的活化的阴离子聚合中。 根据本发明,将溶解在内酰胺熔体中的某些不饱和芳香族乙烯基化合物/二烯嵌段共聚物(B)以1〜15重量%的量添加到内酰胺(熔融体)(A)中,成分(C) 其与二烯嵌段共聚物(B)相容并且完全或部分地溶解在内酰胺熔体中,任选地作为另外的组分加入。 使用的嵌段共聚物(B)含有10至85重量%的芳族乙烯基单元和15至90重量%的二烯单元。 嵌段共聚物(B)甚至可以部分氢化,环氧化或接枝。 优选的内酰胺是ε-己内酰胺。 增加粘度的内酰胺熔体特别适用于吸收增强材料和填料(D)和用于生产填充浇铸聚酰胺。 本发明还涉及在制备聚酰胺的方法中以及相应的聚酰胺模制品,特别是阴离子活化的浇铸方法中使用由此增稠的内酰胺熔体,更特别是含有填料/增强材料的内酰胺熔体。