B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 71/16 (2006.01) A61M 1/18 (2006.01) B01D 67/00 (2006.01) B01D 69/08 (2006.01) D01D 5/06 (2006.01) D01D 5/24 (2006.01)
Patent
CA 2129089
ABSTRACT OF THE DISCLOSURE A cellulose acetate membrane composed of a mixture comprising a cellulose triacetate and a cellulose diacetate and having an improved heat stability, which does not substantially show a melting peak of cellulose diacetate but substantially shows a melting peak of cellulose triacetate, in a differential thermal analysis. By mixing a cellulose triacetate and a cellulose diacetate at an appropriate ratio, crystallization or orientational crystallization of each component due to a high pressure steam sterilization can be avoided and a cellulose acetate membrane with improved water permeability and sieving coefficient of myoglobin after a high pressure steam sterilization can be obtained.
Okamoto Kazutake
Sakurai Hidehiko
Sato Hideo
Shiota Yasuhiro
Suzuki Mitsuru
Borden Ladner Gervais Llp
Toyo Boseki Kabushiki Kaisha
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