公开(公告)号：US20190209973A1

公开(公告)日：2019-07-11

申请号：US16328788

申请日：2017-08-25

Applicant: BASF SE

Inventor： Natalia WIDJOJO ,  Menno BOS ,  Martin HEIJNEN ,  Peishan ZHONG ,  Martin WEBER

IPC: B01D65/08 ,  B01D61/14 ,  B01D69/08 ,  B01D71/80 ,  B01D71/68 ,  B01D69/12 ,  B01D71/52 ,  B01D71/70 ,  C02F1/44

CPC classification number: B01D65/08 ,  B01D61/145 ,  B01D69/08 ,  B01D69/12 ,  B01D71/40 ,  B01D71/52 ,  B01D71/68 ,  B01D71/70 ,  B01D71/80 ,  C02F1/444

Abstract: Multilayer single-bore hollow fibre membranes M or multilayer multi-bore hollow fibre membranes M for ultrafiltration applications are disclosed, comprising at least one hollow fibre membrane substrate S comprising a polymer bulk material P1 and at least one functional layer F disposed on at least the inner surface of the hollow fibre membrane substrate S, wherein the functional layer F comprises at least one polymer P2. The hollow fibre membranes may be used in ultrafiltration methods and filtration modules, in particular for the treatment of waste water.

公开(公告)号：US20190099724A1

公开(公告)日：2019-04-04

申请号：US16086941

申请日：2017-03-20

Applicant: BASF SE

Inventor： Menno BOS ,  Martin HEIJNEN ,  Natalia WIDJOJO

IPC: B01D69/08 ,  B01D69/12 ,  B01D69/02 ,  B01D71/68

Abstract: The present invention is related to a method for fabricating multilayer singlebore membranes (10) or multilayer multibore membranes (20) for ultrafiltration applications including the following method steps: (a) feeding at least a material of a substrate (12), at least one material of a functional layer (14, 15) and a bore fluid (36) to a spinneret (30) simultaneously; (b) forming said membranes (10, 20) as a tube-like string (54) in a one-step process in said spinneret (30); (c) thereby assigning a functionality to said functional layer (14, 15) applied on at least one surface (13, 17) of said substrate (12). The invention is also related to a spinneret (30) for fabricating multilayer singlebore membranes (10) or multilayer multibore membranes (20), using the inventive method, and to a system comprising such a spinneret (30).