Stock material or miscellaneous articles – Composite
Patent
1998-09-30
2000-03-28
Michl, Paul R.
Stock material or miscellaneous articles
Composite
B32B 904
Patent
active
060429453
ABSTRACT:
The present invention provides a light diffusing laminated resin sheet produced by laminating a resin layer (B) on at least one surface of a resin layer (A), the resin layer (A) being made by dispersing uniformly 0.1 to 10 parts by weight of a light diffusing agent having a weight-average particle size from 1 to 10 .mu.m into 100 parts by weight of a base resin comprising 100 parts by weight of a methyl methacrylate resin or styrene resin and 0 to 30 parts by weight of a rubber-like polymer, and the resin layer (B) being made by dispersing uniformly 3 to 70 parts by weight of a rubber-like polymer into 100 parts by weight of a methyl methacrylate resin or styrene resin and essentially containing no inorganic particle dispersed.
This light diffusing laminated resin plate has excellent face impact resistance and high Young's modulus in flexure with light diffusing property, therefore, is preferably used for lighting covers, light diffusing sheets on the surface of liquid crystal layer of displays, illumination sign boards and the like.
REFERENCES:
patent: 3919450 (1975-11-01), Shimizu
patent: 3928099 (1975-12-01), Ohotsubo
patent: 5364696 (1994-11-01), Wagner
Michl Paul R.
Sumitomo Chemical Company Limited
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