Method for the manufacture of a light-polarizing...

Details Method for the manufacture of a light-polarizing... Method for the manufacture of a light-polarizing...

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) B29C 55/04 (2006.01) C08J 7/12 (2006.01) G02B 5/30 (2006.01)

Patent

CA 2249898

A method is provided for the manufacture of a polyvinylene-based light polarizer (cf., a "K Sheet"-type polarizer). In one embodiment, the polyvinylene chromophore of said polarizer is produced by the acid catalyzed dehydration of an oriented polymeric starting material, the acid catalyst being introduced in the method as a bonding agent used to secure the starting materialto a carrier web (or other supporting substrate). Advantages of the method include reduced frequency of "streaking" and "mottling"; good processing speed; and the ability to use a low acid concentration, resulting in a correspondingly low-corrosion processing environment.

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