公开(公告)号：US06861129B2

公开(公告)日：2005-03-01

申请号：US10390374

申请日：2003-03-17

申请人： Jack J. Reilly ,  Jana Lamberson ,  Gary Hall ,  Thomas DeMain

发明人： Jack J. Reilly ,  Jana Lamberson ,  Gary Hall ,  Thomas DeMain

IPC分类号： B32B7/02 ,  B32B27/20 ,  B32B27/30 ,  C08L33/10 ,  G02B1/11

CPC分类号： G02B1/11 ,  B32B7/02 ,  B32B27/20 ,  B32B27/30 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/249921 ,  Y10T428/254 ,  Y10T428/26 ,  Y10T428/264 ,  Y10T428/31928 ,  Y10T428/31935

摘要： Disclosed is a mar resistant transparent co-extruded sheet which is comprised of (a) a cap layer containing particles having a mean particle size of about 1 to 60 microns wherein 90% of the particles are less than 70 microns, at a loading of 0.1 to 18%, melt blended with an acrylic matrix, wherein the particle and matrix have refractive indices within 0.020 units when measured in conformance with ASTM D 542; and (b) a clear substrate layer comprised of an acrylic composition, wherein the substrate has a refractive index within 0.020 units of the refractive index of the cap layer matrix when measured in conformance with ASTM D 542; wherein the co-extruded product has (i) a luminous transmission (CIE tristimulus Y value) of greater than 90% when measuring spectral transmission data using a Macbeth® Color-Eye® 7000 spectrophotometer (Division of Kollmorgen Instruments Corporation), Illuminant C, and the 2° standard observer, and calculating the CIE tristimulus Y value in conformance with ASTM E 308, and (ii) a haze of less than 16% when measured in conformance with ASTM D 1003, and at least one of (iii) or (iv), (iii) a 60° gloss value measured on a 0.118 inch thick sample within 15 units of the 60° gloss value measured on a 0.080 inch thick sample when measured using a micro-TRI-gloss meter made by BYK-Gardner GmbH in conformance with ASTM D 523 using a black felt backing, and (iv) a change in haze as measured in conformance with ASTM D 1044, after 500 revolutions using a 500 g load and CS10F wheel, of less than 25%.

摘要翻译： 公开了一种耐腐蚀的透明共挤出片材，其包括（a）包含平均粒度为约1至60微米的颗粒的盖层，其中90％的颗粒小于70微米，负载为0.1 至18％，与丙烯酸基体熔融共混，其中当根据ASTM D 542测量时，颗粒和基质的折射率在0.020单位内; 和（b）由丙烯酸组合物组成的透明基材层，其中当根据ASTM D 542测量时，基材的折射率在盖层基质的折射率的0.020单位内; 其中所述共挤出产品具有（i）使用7000分光光度计（Kollmorgen Instruments Corporation分公司）测量光谱透射数据时的透光度（CIE三刺激值Y值）大于90％ ，光源C和2°标准观察者，并且根据ASTM E 308计算CIE三刺激值Y，以及（ii）当根据ASTM D 1003测量时雾度小于16％，并且 （iii）或（iv），（iii）在0.118英寸厚的样品上测量的60°光泽值，在使用微型TRI光泽计测量的0.080英寸厚样品上测量的60°光泽值的15单位内测量 BYK-Gardner GmbH根据ASTM D 523使用黑色毛毡背衬，以及（iv）根据ASTM D 1044测量的雾度变化，使用500g载荷和CS10F砂轮在500转之后，小于25 ％。