prov:value
| - For example, the nacreous material may be coated on glass or polymeric sheets such as polyethylene, polypropylene, polymethacrylic acid-methyl and ethyl esters, vinyl chloride polymers, polyvinyl acetal, polyamides, polyesters, and cellulose derivatives--including cellulose acetate, triacetate, nitrate, propionate, butyrate, acetate-propionate and acetate-butyrate.
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