Scratch resistant optical films and methods for producing same

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With charge transferring layer of specified composition

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359599, 359837, 349 64, C09K 1902

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active

057166811

ABSTRACT:
A film that exhibits increased scratch resistant characteristics. The film is formed from a layer of crosslinkable oligomeric resin composition on a base. The film is made by: forming the layer of crosslinkable oligomeric resin composition on the base, and curing the resin composition to an extent that the film exhibits a haze decrease of less than or equal to 60 percent after abrading according to the ASTM D-968-81 procedure using 200 milliliters of sand. Preferably, the layer has a microstructure of alternating tips and grooves. Such films are useful in backlit displays which are useful in computers and the like.

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ASTM D-882-91, "Standard Test Methods for Tensile Properties of Thin Plastic Sheeting", 1992.
ASTM D-968-81, "Standard Test Methods for Abrasion Resistance of Organic Coatings by Falling Abrasive", 1992.
Derwent Patent Abstract, SectionCH, Week 8512, Derwent Publications Ltd., London, GB, Class A32, AN 85-071606 XP002004064 & JP A 60 025 710, Feb. 1985.

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