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    • 3. 发明申请
    • POLYMER COMPOSITION COMPRISING A (METH)ACRYLIC POLYMER HAVING GOOD OPTICAL PROPERTIES AND HEAT RESISTANCE
    • 包含具有良好光学性能和耐热性的(甲基)丙烯酸类聚合物的聚合物组合物
    • WO2017162393A1
    • 2017-09-28
    • PCT/EP2017/054058
    • 2017-02-22
    • SABIC GLOBAL TECHNOLOGIES B.V.
    • MUTHUKRISHNAN, SharmilaMITRA, SusantaNAGARAJACHAR, SathishSIKDER, Arun
    • C08L33/12B29C47/00C08J3/00
    • C08L33/08B29C48/14C08J3/005C08L33/12C08L35/06C08L25/08
    • The present invention relates to a polymer composition comprising (a) 60.0-80.0 wt% of a (meth)acrylic polymer; and (b) 20.0-40.0 wt% of a copolymer prepared using styrene and maleic anhydride with regard to the total weight of (a) and (b), the total of (a) and (b) being 100 wt%; wherein the polymer composition is prepared by melt mixing of a mixture comprising (a) and (b) in a melt extruder, wherein the melt extruder comprises: (i) an inlet for feeding the mixture; (ii) a barrel comprising one or more extruder screw(s) each comprising a tip; (iii) one or more opening(s) for removing the obtained polymer composition from the extruder; and (iv) a volume of space in the area between the tip(s) of the extruder screw(s) and the opening(s) for removing the obtained polymer composition wherein during the melt mixing the temperature of the polymer composition in the volume of space (iv) is ≥ 235°C and ≤ 255°C. Such polymer composition has a desirable scratch resistance and a desirable heat resistance.
    • 本发明涉及一种聚合物组合物,其包含(a)60.0-80.0重量%的(甲基)丙烯酸类聚合物; 和(b)相对于(a)和(b)的总重量,20.0-40.0重量%的使用苯乙烯和马来酸酐制备的共聚物,(a)和(b)的总和为100重量%; 其中所述聚合物组合物通过在熔体挤出机中熔融混合包含(a)和(b)的混合物来制备,其中所述熔体挤出机包含:(i)用于供给所述混合物的入口; (ii)包含一个或多个挤出机螺杆的机筒,每个挤出机螺杆包括尖端; (iii)用于从挤出机中除去所获得的聚合物组合物的一个或多个开口; 和(iv)挤出机螺杆末端与用于除去所得聚合物组合物的开口之间区域中的空间体积,其中在熔融混合期间聚合物组合物在体积中的温度 (iv)的温度≥235℃且≤255℃。 这种聚合物组合物具有理想的耐刮擦性和理想的耐热性。