公开(公告)号：US5387345A

公开(公告)日：1995-02-07

申请号：US63331

申请日：1993-05-19

申请人： Gustav Dunweg ,  Lothar Steinfeld ,  Wolfgang Ansorge

发明人： Gustav Dunweg ,  Lothar Steinfeld ,  Wolfgang Ansorge

IPC分类号： B01D61/24 ,  A61M1/18 ,  B01D63/02 ,  B01D69/02 ,  B01D69/08 ,  B01D71/12 ,  B01D71/16 ,  B01D71/18 ,  D01D5/24 ,  D01F2/28 ,  B01D11/00 ,  B01D33/21 ,  B01D39/00

CPC分类号： D01D5/24 ,  B01D69/02 ,  B01D69/08 ,  B01D71/12 ,  B01D71/16 ,  B01D71/18 ,  D01F2/28

摘要： A dialysis membrane in the form of a hollow fiber with a continuous internal cavity is made of cellulose acetate or a cellulose acetate derivative. The membrane has a maximum sieving coefficient of 0.04 for albumin with a molecular weight of 68,000. A dialysis membrane in the form of a hollow fiber with a continuous internal cavity may be made in a process using a spinning solution containing an organic carboxylic acid and a cavity-forming liquid. Modification agents and/or water are optionally added and the solution is extruded through a spinneret suitable for the manufacture of hollow fibers. The precipitation of the resultant dialysis membrane and the usual further aftertreatment take place in a precipitation bath. The organic carboxylic acid preferably is acetic acid and the precipitation bath preferably is a diluted acetic acid.

摘要翻译： 具有连续内腔的中空纤维形式的透析膜由乙酸纤维素或醋酸纤维素衍生物制成。 对于分子量为68,000的白蛋白，该膜的最大筛分系数为0.04。 具有连续内腔的中空纤维形式的透析膜可以在使用含有有机羧酸和空腔形成液体的纺丝溶液的方法中制备。 任选地加入改性剂和/或水，并通过适于制造中空纤维的喷丝头将溶液挤出。 所得透析膜的沉淀和通常的进一步后处理在沉淀浴中进行。 有机羧酸优选为乙酸，沉淀浴优选为稀释的乙酸。

公开(公告)号：US5505890A

公开(公告)日：1996-04-09

申请号：US325585

申请日：1994-10-19

申请人： Gustav Duweg ,  Lothar Steinfeld ,  Wolfgang Ansorge

发明人： Gustav Duweg ,  Lothar Steinfeld ,  Wolfgang Ansorge

IPC分类号： B01D61/24 ,  A61M1/18 ,  B01D63/02 ,  B01D69/02 ,  B01D69/08 ,  B01D71/12 ,  B01D71/16 ,  B01D71/18 ,  D01D5/24 ,  D01F2/28 ,  B29C47/00 ,  B01D39/00

CPC分类号： D01D5/24 ,  B01D69/02 ,  B01D69/08 ,  B01D71/12 ,  B01D71/16 ,  B01D71/18 ,  D01F2/28

摘要： A dialysis membrane in the form of a hollow fiber with a continuous internal cavity is made of cellulose acetate or a cellulose acetate derivative. The membrane has a maximum screen coefficient of 0.04 for albumin with a molecular weight of 68,000. A dialysis membrane in the form of a hollow fiber with a continuous internal cavity may be made in a process using a spinning solution containing an organic carboxylic acid and a cavity-forming liquid. Modification agents and/or water are optionally added and the solution is extruded through a spinneret suitable for the manufacture of hollow fibers. The precipitation of the resultant dialysis membrane and the usual further aftertreatment take place in a precipitation bath. The organic carboxylic acid preferably is acetic acid and the precipitation bath preferably is a dilute acetic acid.

摘要翻译： 具有连续内腔的中空纤维形式的透析膜由乙酸纤维素或醋酸纤维素衍生物制成。 对于分子量为68,000的白蛋白，膜的最大筛选系数为0.04。 具有连续内腔的中空纤维形式的透析膜可以在使用含有有机羧酸和空腔形成液体的纺丝溶液的方法中制备。 任选地加入改性剂和/或水，并通过适于制造中空纤维的喷丝头将溶液挤出。 所得透析膜的沉淀和通常的进一步后处理在沉淀浴中进行。 有机羧酸优选为乙酸，沉淀浴优选为稀乙酸。