Films from pva modified with nonhydrolyzable anionic comonomers

Details Films from pva modified with nonhydrolyzable anionic comonomers Films from pva modified with nonhydrolyzable anionic comonomers

C - Chemistry, Metallurgy

11

D

134/4.2

C11D 17/04 (2006.01) C08F 216/06 (2006.01) C08J 5/18 (2006.01) C11D 3/02 (2006.01) C11D 3/04 (2006.01)

Patent

CA 1309924

ABSTRACT OF THE DISCLOSURE A PVA film modified with anionic comonomers is provided for use as a water-soluble seal or pouch for alkaline or borate-containing cleaning compositions. The films comprise copolymers of 90-100% hydrolyzed vinyl alcohol with a nonhydrolyzable anionic comonomer, and have molecular weights characterized by a viscosity range of 4-35 cPs. The films are resistant to insolubilization caused by alkaline or borate-containing additives, are storage stable over a wide range of temperature and humidity storage conditions, rapidly and fully solubilize in a wash solution, and do not significantly impair cleaning performance of an additive enclosed within.

566038

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