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    • 1. 发明申请
    • MODIFIED IMPACT RESISTANT POLYMETHACRYLATE MOULDING MATERIAL WITH IMPROVED FLOWABILITY
    • 具有改进的流动性抗冲改性的聚甲基丙烯酸酯成型MASS
    • WO0078863A3
    • 2001-07-19
    • PCT/EP0005051
    • 2000-06-02
    • ROEHM GMBHHOESS WERNERALBRECHT KLAUS
    • HOESS WERNERALBRECHT KLAUS
    • B29B7/00B29K33/04C08L33/10C08L33/12C08L51/00
    • C08L33/12C08L51/003C08L2205/02C08L2666/02C08L2666/04
    • The invention relates to a modified impact resistant polymethylacrylate moulding material characterized by a Vicat softening temperature according to ISO 306 (B 50) of at least 90 DEG C, a notch impact resistance KSZ (Charpy) according to ISO 179/1eA of at least 3.0 KJ/m at 23 DEG C and a flowability MVR (230 DEG c/3,8 KG) according to ISO 1133 of at least 11 cm /10 min, which can by obtained by mixing a) 80 -98 wt. % of a modified impact resistant polymethacrylate moulding material with b) 20 - 2 wt. % of a low molecular polymethacrylate moulding material in a molten state, whereby the impact-resistant moulding material is 70 - 99 wt. % comprised of a matrix containing 80 - 100 wt. % radically polymerized methylmethacrylate units and optionally 0 20 wt. % other radically polymerizable comonomers and contains 1 -30 wt. % of an impact resistance modifying agent and the low molecular polymethyacrylate moulding material is 80-100 wt. % comprised of radically polymerized methylmethacrylate units and 0-20 wt % other radically polymerizable comonomers and has a viscosity ( eta sp/c) of 25 - 35 ml/g when measured in chloroform according to ISO 1628 part 6.
    • 本发明,至少90℃,一个缺口冲击强度NIS(简支梁)的根据至少3.0 KJ /米<2>在23 ISO 179 / 1EA涉及一种抗冲改性的聚甲基丙烯酸酯模制组合物,其特征在于的维卡软化点根据ISO 306(B 50) 根据至少11厘米<3> / 10分钟1133,其通过混合是可获得的)80至98重量的抗冲改性的聚甲基丙烯酸酯的%ISO℃,流动性(MVR 230℃/ 3.8千克) 用b模塑组合物)为20〜2重量%,在熔融的低分子聚甲基丙烯酸酯的模制材料的%,其中,所述耐冲击的模制材料,以70-99重量的80%的基质为100重量自由基聚合甲基丙烯酸甲酯单元的%和 其它可自由基聚合的共聚单体的可选的0至20重量%,并且是1至30重量的抗冲改性剂%,并含有低分子量聚甲基丙烯酸酯模制组合物,以80〜100重量%的自由基聚合Methylmethacr ylat单元和0至20重量聚合的共聚单体的%是weitereren自由基,并根据25至35毫升/克ISO 1628 Cloroform部分6测得的粘度(ETA SP / C)。