Molded articles having improved flex modulus and impact...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 18/32 (2006.01) B29C 45/14 (2006.01) C08G 18/08 (2006.01) C08G 18/66 (2006.01) C08G 18/70 (2006.01)

Patent

CA 2428759

Molded polyurethane articles having improved flex modulus and impact strength are produced by subjecting a polyurethane-forming reaction mixture which has been introduced into a mold to a static electric field. The static electric field must have a field strength which is less than the dielectric strength of the polyurethane being produced but sufficiently strong to align the hard segment dipoles of the polyurethane.

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