Aqueous colloidal dispersions of sulfonated polyurethane...

Details Aqueous colloidal dispersions of sulfonated polyurethane... Aqueous colloidal dispersions of sulfonated polyurethane...

C - Chemistry, Metallurgy

08

G

C08G 18/42 (2006.01) C08G 18/08 (2006.01) C08G 18/12 (2006.01) C08G 18/46 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2416322

The present invention relates to stable colloidal dispersions of sulfonated polyurethane ureas and self-supporting films formed from these dispersions. After formation of the sulfonated polyurethane urea, alcohols can be added to the aqueous dispersion to provide a water-alcohol system. The films of the present invention are minimally tacky and self-adhesive.

La présente invention concerne des dispersions colloïdales stable de polyuréthane-urées sulfonées et des films auto-porteurs formés à partir de ces dispersions. Une fois obtenue la polyuréthane-urée sulfonée, on peut ajouter des alcools à la dispersion aqueuse pour obtenir un système eau-alcool. Les films selon la présente invention sont très peut collants et auto-adhésifs.

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