. . "roxyethylcellulose, methylcellulose, ethylcellulose, carboxymethylcellulose, and other cellulose derivatives, casein, gelatin, and other proteins, oxidized starch, esterified starch, other polysaccharides and other hydrophilic or water-soluble natural high-molecular compounds; poly(vinyl alcohol)s, modified poly(vinyl alcohol)s, polyvinylpyrrolidones, poly(acrylic acid)s, poly(sodium acrylate)s, a" . . . . .