(METH)ACRYLIC PREMIX, (METH)ACRYLIC SMC OR BMC, AND PROCESS FOR PRODUCING (METH)ACRYLIC ARTIFICIAL MARBLE
申请人:MITSUBISHI RAYON COMPANY, LTD.
公开号:EP0976786A1
公开(公告)日:2000-02-02
A (meth)acrylic premix comprising a (meth)acrylic resin composition (A) containing a (meth)acrylic monomer (a) and a (meth)acrylic polymer (b), an inorganic filler (B), and a curing agent (C), wherein, the component (a) is a (meth)acrylate having a bicyclo ring, fluorine atom, cyclic ether, cyclohexane ring or tricyclo ring, and the component (C) is a radical polymerization initiator having a 10 hours half-life temperature of 75°C or more; an acrylic SMC or BMC comprising this (meth)acrylic premix and a thickening agent; and a method for producing (meth)acrylic artificial marble, wherein this (meth)acrylic SMC or BMC is cured with being pressurized and heated at a temperature in the range from 105 to 150°C, are provided. These are useful for producing (meth)acrylic artificial marble having various excellent physical properties such as appearance, dimension stability, hot water resistance, weatherability.
一种(甲基)丙烯酸预混料,包括含有(甲基)丙烯酸单体(a)和(甲基)丙烯酸聚合物(b)的(甲基)丙烯酸树脂组合物(A)、无机填料(B)和固化剂(C),其中,组分(a)是具有双环、氟原子、环醚、环己烷环或三环的(甲基)丙烯酸酯,组分(C)是半衰期为10小时、温度为75℃或更高的自由基聚合引发剂;提供了一种由这种(甲基)丙烯酸预混料和一种增稠剂组成的丙烯酸 SMC 或 BMC;以及一种生产(甲基)丙烯酸人造大理石的方法,其中这种(甲基)丙烯酸 SMC 或 BMC 是在 105 至 150°C 的温度范围内加压和加热固化的。这些材料可用于生产具有各种优异物理性能(如外观、尺寸稳定性、耐热水性和耐候性)的(甲基)丙烯酸人造大理石。