| http://www.w3.org/ns/prov#value | - The at least partially acid-soluble component may be selected from polymerssuch as polyvinyl pyrrolidone, hydroxypropyl cellulose, hydroxypropyl methylcellulose, polyethylene glycol having a molecular weight of from 1700 to 20,000, polyvinyl alcohol and monomers therefor such as sugars, salts, or organic acids and mixtures thereof.
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