Fluorinated polyurethanes endowed with improved mechanical...

Details Fluorinated polyurethanes endowed with improved mechanical... Fluorinated polyurethanes endowed with improved mechanical...

C - Chemistry, Metallurgy

08

G

400/2012

C08G 18/50 (2006.01) C08G 18/10 (2006.01)

Patent

CA 1339323

Polyurethanes comprising polyoxyperfluoroalkylene blocks of rubber-like nature and rigid segments derived from short-chain aliphatic diols, optionally from aliphatic diamines, and from aliphatic or cycloaliphatic or aromatic diisocyanates, the number of the rigid-type segments being equal to or higher than the number of the polyoxyperfluroalkylene blocks, characterized by a glass transition temperature lower than -80°C, a tensile strength higher than 30 kg/cm2, a hardness between 50 Shore A and 75 Shore D, and good thermoforming characteristics.

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