C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/34 (2006.01) C08F 220/38 (2006.01) C09J 7/02 (2006.01) C09J 133/14 (2006.01) C09J 139/02 (2006.01) C09J 139/04 (2006.01)
Patent
CA 2194733
The invention relates to adhesive compositions comprising zwitterionic copolymers, including repulpable adhesive compositions, and adhesive tapes made with such compositions. The adhesive compositions comprise a zwitterionic copolymer and a zwitterionic plasticizer or tackifier which can be coated on a backing to form an adhesive tape. The repulpable tapes are formed from a repulpable adhesive composition comprising a zwitterionic copolymer coated on a repulpable backing. Examples of zwitterionic copolymers are those derived from the monomers N-(3-sulphopropyl)-N-methacryloxy-ethyl-N,N-dimethhyl ammonium betaine or N-(3-sulphopropyl)-N-acryloxy-ethyl-N,N-dimethyl ammonium betaine. Some of the zwitterionic copolymers are novel.
Cette invention porte sur des compositions adhésives comportant des copolymères zwittérioniques, notamment des compositions adhésives retriturables et des rubans adhésifs fabriqués avec ces compositions. Ces compositions adhésives comportent un copolymère zwittérionique et un plastifiant ou un agent poissant zwittérionique qu'on peut appliquer comme revêtement à l'endos d'un ruban adhésif. Ces rubans retriturables sont constitués d'une composition polymérique retriturable comportant un copolymère zwittérionique retriturable appliqué comme revêtement sur un endos retriturable. Les copolymères zwittérioniques sont par exemple ceux qui sont dérivés des monomères N-(3-sulfopropyl)-N-méthacryloxyéthyl-N,N-diméthylammoniumbétaïne ou N-(3-sulfopropyl)-N-acryloxyéthyl-N,N-diméthylammoniumbétaïne. Certains des copolymères zwittérioniques sont nouveaux.
Li Kai
Nielsen Kent E.
Rayner Terry J.
Goodale Marie A.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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