| http://www.w3.org/ns/prov#value | - Such materials are generally hydrophilic in character and include: cellulose esters such as cellulose acetate, triacetate, formate, propionate, nitrate or the like, including mono, di or tri esters and mixtures of such esters; cellulose ethers such as methyl, ethyl, hydroxy-alkyl, carboxy-alkyl, or the like, including mixed cellulose ethers; regenerated cellulose; polyvinyl alcohols; polysaccharid
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