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1. 发明申请

WO2004042471A8 REAR PROJECTION SCREEN AND METHOD FOR THE PRODUCTION THEREOF 审中-公开
标题翻译：背投影屏幕及其制造方法
公开(公告)号：WO2004042471A8
公开(公告)日：2004-11-11
申请号：PCT/EP0310762
申请日：2003-09-27
申请人： ROEHM GMBH , SCHMIDT JANN , GROOTHUES HERBERT , SCHARNKE WOLFGANG , LORENZ HANS , HAERING HELMUT , DICKHAUT-BAYER GUENTHER
发明人： PARUSEL MARKUS , SCHMIDT JANN , GROOTHUES HERBERT , SCHARNKE WOLFGANG , LORENZ HANS , HAERING HELMUT , DICKHAUT-BAYER GUENTHER
IPC分类号： G03B1/00 , G03B21/62 , B32B27/20
CPC分类号： G03B21/62
摘要： The invention relates to rear projection screens comprising at least one light-diffusing polymethylmethacrylate layer which has a thickness ranging between 0.05 and 4 mm and contains spherical plastic particles having a size ranging between 5 and 35 ñm at a concentration ranging from 2 to 60 percent by weight relative to the total weight of the light-diffusing polymethylmethacrylate layer, said spherical plastic particles having a refractive index that differs by 0.02 to 0.2 from that of the polymethylmethacrylate matrix. The concentration of the spherical plastic particles cP, the thickness of the light-diffusing polymethylmethacrylate layer ds, and the size of the spherical plastic particles Dp are selected such that the ratio cP*ds/Dp ranges between 0.0015 and 0.015 percent by weight *mm/ñm while the ratio between the mean surface roughness of the polymethylmethacrylate layer Ra and the size of the spherical plastic particles DP ranges between 0.05 and 0.4. The inventive rear projection screens are characterized by a particularly high quality of the illustrations which are projected thereupon.
摘要翻译：本发明涉及包含在0.05至4mm，其包含具有的浓度范围为2〜60重量％为5〜35微米范围内的颗粒尺寸的球形塑料颗粒的厚度范围中的至少一个光散射聚甲基丙烯酸甲酯层背投屏幕，基于光散射聚甲基丙烯酸甲酯层的总重量，球形塑料粒子在聚甲基丙烯酸甲酯基体的折射率的差在0.02〜0.2的范围内，其中所述球状塑料颗粒厘泊的浓度，光散射聚甲基丙烯酸甲酯层DS的厚度，并且的球形塑料颗粒尺寸的颗粒DP是选择为使得比率厘泊* DS / DP <3>在从0.0015至0.015重量％的范围内*毫米/微米<3>和聚甲基丙烯酸甲酯层Ra为平均表面粗糙度的比到球形塑料颗粒DP的粒度在该范围内从0.05到0.4。背投屏幕的特征在于投射在其上的图像的质量特别高。

2. 发明专利

HK1128606A1 USE OF PLASTICS MOULDINGS WITH STRUCTURED AND MICROROUGH SURFACES AND SANITARY ELEMENTS HAVING ANTISLIP FLOOR COVERING COMPOSED OF SUCH PLASTCS MOULDINGS 未知
公开(公告)号：HK1128606A1
公开(公告)日：2009-11-06
申请号：HK09106797
申请日：2009-07-24
申请人： EVONIK ROEHM GMBH
发明人： THEIL ALEXANDER , GAUL HEINRICH , ORTLEPP BERNHARD , SCHARNKE WOLFGANG , SCHMIDT JANN
IPC分类号： A47K20060101 , E04F20060101
摘要： PLEXIGLAS(R) is suitable-when provided with a structured and microrough surface -as an anti-slip covering for sanitary elements.

3. 发明专利

AU2004269461B2 Scratch-resistant rear projection screen and method for producing the same 未知
公开(公告)号：AU2004269461B2
公开(公告)日：2009-09-10
申请号：AU2004269461
申请日：2004-03-12
申请人： EVONIK ROEHM GMBH
发明人： SCHMIDT JANN , KROHMER CHRISTOPH , GROOTHUES HERBERT , PARUSEL MARKUS , DICKHAUT-BAYER GUNTHER
IPC分类号： G02B5/02
摘要： A back projection screen comprises at least one light scattering polymethylmethacrylate layer comprising a polymethylmethacrylate matrix and spherical particles (A) and spherical particles (B) having different average particle sizes with at least one particle type having a refractive index that is different to that of polymethylmethacrylate matrix. A back projection screen (I) comprises at least one light scattering polymethylmethacrylate layer comprising a polymethylmethacrylate matrix and spherical particles (A) and spherical particles (B) having different average particle sizes whereby (A) have an average particle size of 0.1-40 mu m and a refractive index that is different to that of polymethylmethacrylate matrix by 0.02-2 and (B) have an average particle size of 10-150 mu m and a refractive index that is different to that of polymethylmethacrylate matrix by 0-0.2 and the total concentration of (A) and (B) is 1-60 wt. % (with respect to the light scattering polymethylmethacrylate layer) such that the ratio of the concentration of particles (A) CPA , thickness of the light scattering layer d s and particle size of (A) DPA as defined by CPA.ds/DPA3 is 0.001-0.015 wt.%.mm/mu m 3> and the corresponding ratio for particles (B), CPB.ds /DPB3 is 0.000005-0.002 wt.%.mm/mu m 3> and the ratio of the square of the average surface roughness of the polymethylmethacrylate layer R z to the cube of the particle size of (B) R 2> z/DPB3 is 0.0002-0.1300 mu m -> 1>. An independent claim is included for a process for the production of the screen (I) by extrusion of a composition comprising polymethylmethacrylate, particles (A) and particles (B).

4. 发明专利

ES2290494T3 PANTALLA DE RETROPROYECCION Y PROCESO PARA SU PRODUCCION. 未知
公开(公告)号：ES2290494T3
公开(公告)日：2008-02-16
申请号：ES03755565
申请日：2003-09-27
申请人： EVONIK ROEHM GMBH
发明人： SCHMIDT JANN , GROOTHUES HERBERT , SCHARNKE WOLFGANG , LORENZ HANS , HARING HELMUT , DICKHAUT-BAYER GUNTHER
IPC分类号： G03B1/00 , G03B21/62 , B32B27/20
摘要： Pantalla de retroproyección que comprende al menos una capa de poli(metacrilato de metilo) dispersante de la luz que tiene un espesor comprendido en el intervalo de 0, 05 a 4 mm que comprende partículas esféricas de material plástico con un tamaño de grano que tiene un diámetro medio (valor medio ponderal) comprendido en el intervalo de 5 a 35 µm en una concentración comprendida en el intervalo de 2 a 60% peso, referida al peso total de la capa de poli(metacrilato de metilo) dispersante de la luz, donde las partículas esféricas de material plástico tienen un valor de refringencia medido para la línea D del sodio (589 nm) y a 20ºC, que exhibe una diferencia de índice de refracción referida a la matriz de poli(metacrilato de metilo) comprendida en el intervalo de 0, 02 a 0, 2, caracterizada porque la concentración de las partículas esféricas de material plástico cp, el espesor de la capa de poli(metacrilato de metilo) dispersante de la luz ds y el tamaño de grano de las partículas esféricas de plástico Dp se seleccionan de tal manera que la relación cp*ds/Dp 3 está comprendida en el intervalo de 0, 0015 a 0, 015% peso*mm/µm 3 y la relación de la rugosidad superficial media de la capa de poli(metacrilato de metilo) Ra según DIN 4768 al tamaño de grano de las partículas esféricas de material plástico Dp está comprendida en el intervalo de 0, 05 a 0, 4.

5. 发明专利

DE50307872D1 未知
公开(公告)号：DE50307872D1
公开(公告)日：2007-09-20
申请号：DE50307872
申请日：2003-09-27
申请人： ROEHM GMBH
发明人： SCHMIDT JANN , GROOTHUES HERBERT , SCHARNKE WOLFGANG , LORENZ HANS , HAERING HELMUT , DICKHAUT-BAYER GUENTHER , PARUSEL MARKUS
IPC分类号： G03B1/00 , G03B21/62 , B32B27/20
摘要： A back projection screen including at least one light scattering polymethyl methacrylate (PMM) layer of thickness 0.05-4 mm having spherical particles of particles size 5-35 micron in a concentration of 2-60 wt.% on the total weight of the PMM layer, the particles having a refractive index difference compared with the PMM matrix of 0.02-0.2 is new. A back projection screen including at least one light scattering polymethyl methacrylate (PMM) layer of thickness 0.05-4 mm having spherical particles of particles size 5-35 micron in a concentration of 2-60 wt.% on the total weight of the PMM layer, the particles having a refractive index difference compared with the PMM matrix of 0.02-0.2, where the concentration of spherical particles cp, the thickness of the light scattering PMM layer ds, and the particle size of the spherical plastics particles Dp are selected so that the cp.ds/Dp3 ratio is 0.0015-0.015 wt.%.mm/micron3 and the ratio of the mean surface roughness of the polymethyl methacrylate layer Ra to the particle size of the spherical plastics layer dscp/ds = 0.05-0.4. An Independent claim is included for a process for preparing the screen by extrusion of a molding composition.

6. 发明专利

CA2645102A1 PLEXIGLAS SURFACE WITH ANTISLIP PROPERTIES AND SANITARY ELEMENTS THEREWITH 未知
公开(公告)号：CA2645102A1
公开(公告)日：2007-09-20
申请号：CA2645102
申请日：2007-02-02
申请人： EVONIK ROEHM GMBH
发明人： SCHARNKE WOLFGANG , SCHMIDT JANN , ORTLEPP BERNHARD , THEIL ALEXANDER , GAUL HEINRICH
IPC分类号： A47K3/00 , E04F15/10
摘要： PLEXIGLAS~ is suitable ~ when provided with a structured and microrough surface - as an anti-slip covering for sanitary elements.

7. 发明专利

AU2002352083B2 Illuminative device 未知
公开(公告)号：AU2002352083B2
公开(公告)日：2006-08-31
申请号：AU2002352083
申请日：2002-11-21
申请人： EVONIK ROEHM GMBH
发明人： ALBRECHT EDUARD , SCHMIDT JANN , ITTMANN GUNTHER , LICHTENSTEIN HANS
IPC分类号： F21V1/00 , F21V5/00 , F21V3/04 , F21V9/08 , F21Y101/02 , G09F13/04 , H01L33/00
摘要： The invention relates to an illuminative device essentionaly comprising a light source and a diffusing cover which is assigned to the light source and is made of colored plastic. The light source consites of one or several light-emitting diodes (LEDs) emitting a colored an substantially monocromatic light. The diffusing cover assigned thereto has a transmition (DIN 5036) of at least 35% and a reflection (DIN 5036) of at least 15% with the wavelength of the light-emitting diode operating at relative maximum energy.

8. 发明专利

HK1071389A1 Light conducting body and method for the production thereof 未知
公开(公告)号：HK1071389A1
公开(公告)日：2005-07-15
申请号：HK05104013
申请日：2005-05-13
申请人： ROEHM GMBH
发明人： SCHMIDT JANN , ITTMANN GUNTHER , LICHTENSTEIN HANS , GROOTHUES HERBERT
IPC分类号： G02B6/00 , C08K7/18 , C08L33/12 , G02B1/04 , C08K , F21V , G02B
摘要： The present invention relates to a light-guide body, which has at least one light-entry surface and at least one light-exit surface, the ratio of the light-exit surface area to the light-entry surface area being at least 4, comprising at least one light-guiding layer with a thickness of at least 2 mm, characterized in that the light-guiding layer comprises at least 60% by weight, expressed in terms of the weight of the light-guiding layer, of polymethyl methacrylate and from 0.001 to 0.08% by weight, expressed in terms of the weight of the light-guiding layer, of spherical barium sulphate particles with an average diameter in the range of from 0.3 to 20 mum.

9. 发明专利

ZA200409164B Improved light-guiding bodies and method for the production thereof. 未知
公开(公告)号：ZA200409164B
公开(公告)日：2005-05-18
申请号：ZA200409164
申请日：2004-11-11
申请人： ROEHM GMBH
发明人： SCHMIDT JANN , GROOTHUES HERBERT , PARUSEL MARKUS , ITTMANN GUENTHER
IPC分类号： F21V8/00 , F21Y103/00 , G02B6/00 , F21V , B29D , G02B , G02F
摘要： A light-conductor with a light inlet surface : light outlet surface ratio at least4 contains a light-guide layer which (i) contains polymethyl methacrylate (at least60 wt.%) and spherical particles of average diameter 0.3-40mu (0.0001-0.2 wt.%) and (ii) has a structured light outlet surface. Independent claims are also included for production of a light-conductor by (i) thermoplastically forming a composition comprising polymethyl methacrylate (at least60 wt.%) and spherical particles of average diameter 0.7-40mu (0.0001-0.2 wt.%) or (ii) radically polymerizing a mixture of by wt. (A) spherical particles of average diameter 0.7-40mu (0.0001-0.2%), (B) methyl methacrylate (40-99.9999%), (C) comonomers (0-59.9999%) and (D) a polymer soluble in (B) or (C) (0-59.9999%).

10. 发明专利

NO20043020L 未知
公开(公告)号：NO20043020L
公开(公告)日：2004-07-06
申请号：NO20043020
申请日：2004-07-06
申请人： ROEHM GMBH
发明人： LICHTENSTEIN HANS , SCHMIDT JANN , ITTMANN GUENTHER , ALBRECHT EDUARD
IPC分类号： F21V1/00 , F21V3/04 , F21V9/08 , F21Y101/02 , G09F13/04 , H01L33/00 , F21V5/00
摘要： The invention relates to an illuminative device essentionaly comprising a light source and a diffusing cover which is assigned to the light source and is made of colored plastic. The light source consites of one or several light-emitting diodes (LEDs) emitting a colored an substantially monocromatic light. The diffusing cover assigned thereto has a transmition (DIN 5036) of at least 35% and a reflection (DIN 5036) of at least 15% with the wavelength of the light-emitting diode operating at relative maximum energy.

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