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    • 5. 发明申请
    • Acryl Microbead Having Marron Particle Size Distribution and Method of Preparing Thereof
    • 具有Marron粒度分布的丙烯微珠及其制备方法
    • US20090117381A1
    • 2009-05-07
    • US11991673
    • 2006-08-31
    • Jae Eock ChoSe Jin OhSeok Heon Oh
    • Jae Eock ChoSe Jin OhSeok Heon Oh
    • B32B5/16C08L33/08B32B27/00
    • C08F2/16C08F220/14Y10T428/2982
    • Disclosed herein are acryl microbeads having a narrow particle size distribution and a method of preparing the same. In a method of preparing acryl microbeads through polymerization by stirring a polymerization composition containing vinyl acrylate monomers, an initiator and a dispersion stabilizer at a high speed to form microdroplets and increasing a reaction temperature to induce the polymerization reaction of the monomers within the microdroplets, a low molecular weight seed particle capable of absorbing vinyl acrylate monomers dissolved in a reaction medium outside the microdroplets is supplied at the time of the polymerization reaction, and thus the acryl microbeads have a narrow particle size distribution. The microbeads, which are almost completely free of fine and coarse particles and thus need no sorting process, which range in size from 1 to 50 μm, and which have a narrow particle size distribution can be prepared at a high yield without using a polymerization inhibitor. Exhibiting excellent physicochemical properties including color, transparency, etc., the microbeads can find a wide spectrum of applications in various industries including optical, cosmetic, and food industries.
    • 本文公开了具有窄粒度分布的丙烯酸微珠和其制备方法。 在通过聚合制备丙烯酸微珠的方法中,通过以高速搅拌含有丙烯酸乙烯酯单体,引发剂和分散体稳定剂的聚合组合物以形成微滴并增加反应温度以诱导单体在微滴中的聚合反应, 在聚合反应时供给溶解在微滴外的反应介质中的能够吸收丙烯酸乙烯酯单体的低分子量种子颗粒,因此丙烯酸类微珠粒径分布窄。 几乎完全不含细粒和粗颗粒的微珠,并且不需要分选过程,其尺寸范围为1至50μm,并且可以以高产率制备具有窄粒度分布的微珠,而不使用聚合抑制剂 。 微珠具有优异的物理化学性质,包括颜色,透明度等,可以在光学,化妆品和食品工业等行业中得到广泛的应用。