Microporous sheets and a process for making them

Details Microporous sheets and a process for making them Microporous sheets and a process for making them

1974-08-29

1978-04-25

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 292TN, 260 775Q, C08G 1814

Patent

active

040861937

ABSTRACT:
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.

REFERENCES:
patent: 3296190 (1967-01-01), Reischl et al.
patent: 3763054 (1973-10-01), Reischl et al.
DAS 1,270,276, June 1968, Bayer A/G (Zorn et al.), 16 pages.

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