利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

20 条记录 (耗时 0.023 秒)

    Scratch-resistant rear projection screen and method for producing the same
    5.
    发明授权
    Scratch-resistant rear projection screen and method for producing the same 失效

    公开(公告)号：US07339732B2

    公开(公告)日：2008-03-04

    申请号：US10566244

    申请日：2004-03-12

    申请人： Markus Parusel ,  Jann Schmidt ,  Herbert Groothues ,  Christoph Krohmer ,  Guenther Dickhaut-Bayer

    发明人： Markus Parusel ,  Jann Schmidt ,  Herbert Groothues ,  Christoph Krohmer ,  Guenther Dickhaut-Bayer

    IPC分类号： G03B21/60 ,  G03B21/56

    CPC分类号： G03B21/62 ,  G02B5/0221 ,  G02B5/0242 ,  G02B5/0278 ,  G02B5/0294

    摘要： The present invention relates to a rear-projection screen encompassing at least one light-scattering polymethyl methacrylate layer, which comprises a polymethyl methacrylate matrix and spherical scattering particles (A) and spherical particles (B) with a different median particle size V50, where the spherical scattering particles (A) have a median size V50 in the range from 0.1 to 40 μm, the difference between the refractive index of the spherical scattering particles (A) and that of the polymethyl methacrylate matrix being in the range from 0.02 to 0.2, where the spherical particles (B) have a median size V50 in the range from 10 to 150 μm, the difference between the refractive index of the spherical particles (B) and that of the polymethyl methacrylate matrix being in the range from 0 to 0.2, and where the total concentration of the spherical scattering particles (A) and particles (B) is in the range from 1 to 60% by weight, based on the weight of the light-scattering polymethyl methacrylate layer, where the concentration of the spherical scattering particles (A) cPA, the thickness of the light-scattering polymethyl methacrylate layer dS and the size of the spherical scattering particles (A) DPA is selected in such a way that the ratio cPA*dS/DPA3 is in the range from 0.001 to 0.015% by weight*mm/μm3, the concentration of the spherical particles (B) cPB, the thickness of the light-scattering polymethyl methacrylate layer dS and the size of the spherical particles (B) DPB is selected in such a way that the ratio cPB*dS/DPB3 is in the range from 0.000005 to 0.002% by weight*mm/μm3 and the ratio of the square of average surface roughness of the polymethyl methacrylate layer RZ to the third power of the size of the spherical particles (B) RZ2/DPB3 is in the range from 0.0002 to 0.1300 μm−1.

    Method of manufacturing monodisperse poly (meth) acrylate particles
    8.
    发明授权
    Method of manufacturing monodisperse poly (meth) acrylate particles 失效
    制造单分散聚（甲基）丙烯酸酯颗粒的方法

    公开(公告)号：US5458975A

    公开(公告)日：1995-10-17

    申请号：US353213

    申请日：1994-12-01

    申请人： Werner Siol ,  Wilhelm Wopker ,  Erwin Felger ,  Markus Parusel

    发明人： Werner Siol ,  Wilhelm Wopker ,  Erwin Felger ,  Markus Parusel

    IPC分类号： C08F2/18 ,  C08F2/00 ,  C08F4/28 ,  C08F4/34 ,  C08F20/10 ,  C08F20/12 ,  C08F20/14 ,  C08F287/00 ,  C08L33/06 ,  C08L33/14 ,  C08L53/00 ,  C09D133/06 ,  B32B5/16

    CPC分类号： C08F20/14 ,  C08F287/00 ,  C08L33/14 ,  C08L53/00 ,  Y10T428/2982

    摘要： The invention relates to a method of manufacturing monodisperse poly(meth)acrylates by the method of precipitation polymerization, comprising polymerizingi) a monomer mixture comprising at least 60 wt. % of monomer of formula I ##STR1## where R represents hydrogen or methyl; andR.sub.1 represents a C.sub.1-8 alkyl group, a C.sub.6-24 aryl group, a C.sub.1-8 alkyl substituted aryl group or an aralkyl group;ii) 0.1-10 wt. % based on the weight of the monomer mixture of a block copolymer having polystyrene components; andiii) 0.02-2 wt. % based on the weight of the monomer mixture of a percarbonic acid ester;in a halogen free solvent comprising 70 to 100 wt. % of cyclohexane.

    摘要翻译： 本发明涉及通过沉淀聚合方法制造单分散聚（甲基）丙烯酸酯的方法，其包括使i）单体混合物聚合至少60重量％ ％的式I单体（I）其中R表示氢或甲基; 并且R 1表示C 1-8烷基，C 6-24芳基，C 1-8烷基取代的芳基或芳烷基; ii）0.1-10重量％ 基于具有聚苯乙烯组分的嵌段共聚物的单体混合物的重量％; 和iii）0.02-2重量％ 基于过碳酸酯的单体混合物的重量％; 在无卤素溶剂中，包含70〜100wt。 ％的环己烷。

    Diffuser disk for LCD applications, method for the production and use thereof
    9.
    发明授权
    Diffuser disk for LCD applications, method for the production and use thereof 失效
    用于LCD应用的扩散盘，用于生产和使用它的方法

    公开(公告)号：US07629041B2

    公开(公告)日：2009-12-08

    申请号：US10566249

    申请日：2004-05-12

    申请人： Markus Parusel ,  Jann Schmidt ,  Herbert Groothues

    发明人： Markus Parusel ,  Jann Schmidt ,  Herbert Groothues

    IPC分类号： B32B19/00 ,  G02B5/00

    CPC分类号： G03B21/62 ,  G02B5/0221 ,  G02B5/0242 ,  G02B5/0278 ,  G02B5/0294 ,  G02F1/1336 ,  Y10T428/25 ,  Y10T428/254 ,  Y10T428/258 ,  Y10T428/31855

    摘要： The present invention relates to diffuser sheets for LCD applications encompassing at least one light-scattering polymethyl methacrylate layer which comprises a polymethyl methacrylate matrix and also from 0.5 to 59.5% by weight, based on the weight of the light-scattering polymethyl methacrylate layer, of spherical scattering particles (A) whose median size V50 is in the range from 0.1 to 40 μm, and whose refractive index differs from that of the polymethyl methacrylate matrix by a value in the range from 0.02 to 0.2, and from 0.5 to 59.5% by weight, based on the weight of the light-scattering polymethyl methacrylate layer, of spherical particles (B) whose median size V50 is in the range from 10 to 150 μm and whose refractive index differs from that of the polymethyl methacrylate matrix by a value in the range from 0 to 0.2, where the total concentration of the spherical scattering particles (A) and particles (B) is in the range from 1 to 60% by weight, based on the weight of the light-scattering polymethyl methacrylate layer, and the spherical scattering particles (A) and spherical particles (B) have a different median particle size V50, where the transmittance of the diffuser sheets is in the range from 20 to 70% and their scattering power is greater than 0.3, where the ratio of the square of average surface roughness of the polymethyl methacrylate layer RZ to the third power of the size of the spherical particles (B) RZ2/DPB3 is in the range from 0.0002 to 0.1300 μm−1.

    摘要翻译： 本发明涉及用于LCD应用的漫射片，其包括至少一种光散射聚甲基丙烯酸甲酯层，其包含聚甲基丙烯酸甲酯基质，并且还基于光散射聚甲基丙烯酸甲酯层的重量计为0.5-59.5重量％ 中值大小V50为0.1〜40μm的球形散射粒子（A），其折射率与聚甲基丙烯酸甲酯基体的折射率不同，为0.02〜0.2，0.5〜59.5％ 重量，基于光散射聚甲基丙烯酸甲酯层的重量，其中值大小V50在10至150μm范围内并且其折射率不同于聚甲基丙烯酸甲酯基质的球形颗粒（B）的值为 0至0.2的范围，其中球形散射颗粒（A）和颗粒（B）的总浓度在1至60重量％的范围内，基于Li的重量 散射聚甲基丙烯酸甲酯层，球状散射粒子（A）和球状粒子（B）的中值粒径V50不同，扩散片的透射率在20〜70％的范围内，散射光强度为 大于0.3，其中聚甲基丙烯酸甲酯层RZ的平均表面粗糙度的平方比与球形颗粒（B）RZ2 / DPB3的尺寸的第三功率的比率在0.0002至0.1300mum-1的范围内。