Membrane and method for making and using same

Details Membrane and method for making and using same Membrane and method for making and using same

A - Human Necessities

61

M

182/13

A61M 1/03 (1980.01)

Patent

CA 1120407

ABSTRACT OF THE DISCLOSURE Disclosed is a viscose membrane suitable for hemodialysis, comprising a viscose membrane substantially equally oriented in the longitudinal and in the transverse directions, having in the dry state a birefringence in each direction of not more than about 6 x 10-3 and a phase difference of not more than about 150 nm, and wherein during transition from a dry into a wet state, the membrane undergoes a shrinkage of between about 0.5 and 10 percent both in the longitu- dinal and in the transverse directions. The membrane is produced by a process which is characterized in that the membrane is transversely stretched by 40 to 120% prior to drying.

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