| http://www.w3.org/ns/prov#value | - Examples of binder materials useful in the present invention are methyl cellulose, wheat flour, dextrin, starch, lignin extracts, spent liquor in pulp industries, gum arabic, gutta-percha rubber, tragacanth gum, polyvinyl alcohol, polyvinyl butyral, methylethyl cellulose, ceresin, casein, cellulose acetate and synthetic resins such as acrylic resins, phenol resins and vinyl resins.
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