| http://www.w3.org/ns/prov#value | - The film-forming agents that may be used are, e.g., water insoluble polymers, such as ethylcellulose, acrylic resins, i.e. polymers and copolymers of acrylic and methacrylic acids, cellulose acetate propionate; polymers whose solubility depends on the pH of the medium, such as cellulose acetate phthalate, cellulose trimellitate, cellulose acetate butyrate, copolymer of acrylic and methacrylic acid
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