Microporous sheets and a process for making them

B - Operations – Transporting – 29 – D

Patent

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18/22

B29D 27/00 (1980.01)

Patent

CA 1053868

MICROPOROUS SHEETS AND A PROCESS FOR MAKING THEM Abstract of the Disclosure A method for making microporous sheets is provided wherein a dispersion of a cationic and/or anionic polyurethane is mixed with a solution containing a non-ionic polyurethane and the resulting mixture is coagulated with a non-solvent for the non-ionic polyurethane.

287924

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