| Limitations/Specifications: |
1. Styrene-butyl acrylate acrylic copolymers are produced by the emulsion polymerization of a minimum of 68 parts by weight styrene with a maximum of 26 parts butyl acrylate and up to 12 parts of any one or more of the following monomers: acrylic acid, methacrylic acid, methyl methacrylate, allyl methacrylate and butyl methacrylate, as further described in the notification. 2. The subject copolymers are for use in pigmented coatings that contain mixtures of other components such as inorganic pigments (e.g., clay, titanium dioxide, calcium carbonate) and binders applied to paper and paperboard at levels not to exceed 20 percent by weight based on total coating solids. 3. The copolymers may also be used in coatings applied to the interior, food contact paper and paperboard surface at levels not to exceed 50 percent by weight of total coating solids levels. 4. The finished copolymers must be used in accordance with 21 CFR 176.170(c).
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