Soft, transparent and processable thermoplastic polyurethane

Details Soft, transparent and processable thermoplastic polyurethane Soft, transparent and processable thermoplastic polyurethane

C - Chemistry, Metallurgy

08

G

C08G 18/66 (2006.01) C08G 18/32 (2006.01) C08G 18/48 (2006.01) C08G 18/73 (2006.01) C08G 18/75 (2006.01)

Patent

CA 2322093

A soft, transparent and processable thermoplastic polyurethane resin suitable in optical application is disclosed. The resin is the product of reacting a diisocyanate, a chain extender, and a mixture of polyether polyols. The mixture of polyether polyols comprise (A) a C4 polyether polyol and (B) a C2-C3 polyether polyol where the weight ratio A/B is in the range of about 85/15 to 15/85.

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