Abrasion-resistant optical coating composition containing pentae

Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy

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20415923, 260 17A, C08F 250, C08L 110, C08L 114, C08L 4700

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active

043081193

ABSTRACT:
Actinic radiation curable coating compositions are provided applicable to many substrates comprising a pentaerythritol-based polyacrylate or polymethacrylate such as pentaerythritol tetraacrylate, a cellulose ester such as cellulose acetate butyrate and a photoinitiator. The compounds are preferably applied to the substrate by spraying a solution of the composition in one or more solvents selected from the group consisting of lower alcohols and ester, ketones having from 3 to 7 carbon atoms and lower alkyl Cellosolves, and removing the solvents.
Upon curing in air the compositions form extremely abrasion resistant coatings on the substrate and are also characterized by being scratch resistant and resistant to attack by chemical and organic solvents.

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