公开(公告)号：US11458439B2

公开(公告)日：2022-10-04

申请号：US16065991

申请日：2016-12-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Linglu Yang ,  Peng Wang ,  Su Lu ,  Zhen Liu ,  Yun Peng ,  Lawrence C. Costa

IPC: B01D69/06 ,  B01D69/10 ,  B01D67/00 ,  B01D71/68 ,  B01D63/10 ,  B01D69/02 ,  B01D69/12

Abstract: The disclosure of the present invention relates to a method for preparing membrane and associated membrane and filter element. The method comprises providing a porous substrate having a plurality of pores; and applying a pre-filler solution to at least partially occupy the pores in the porous substrate. The membrane comprises a porous substrate and a filter layer formed on the porous substrate. The filter element comprises a core tube; and a membrane as prepared and rolled around the core tube.

公开(公告)号：US09914098B2

公开(公告)日：2018-03-13

申请号：US15066635

申请日：2016-03-10

Applicant: General Electric Company

Inventor： Xingpeng Zhang ,  Lawrence C. Costa ,  Steven John Harrold ,  Babu Narayanswamy

IPC: B01D71/70 ,  C08G77/445 ,  B01D61/02 ,  B01D71/56 ,  B01D71/82 ,  B01D71/68 ,  C08G69/48 ,  B01D67/00 ,  B01D69/02

CPC classification number: B01D71/70 ,  B01D61/02 ,  B01D61/025 ,  B01D61/027 ,  B01D67/0011 ,  B01D69/02 ,  B01D71/56 ,  B01D71/68 ,  B01D71/82 ,  B01D2323/30 ,  B01D2323/40 ,  B01D2325/48 ,  B32B27/283 ,  B32B27/34 ,  B32B2305/026 ,  C08G69/48 ,  C08G77/445

Abstract: The present disclosure describes an additive that may be used in the manufacture of thin-film polyamide composite membranes. Thin-film polyamide composite membranes are used in filtration processes, such as reverse osmosis and nanofiltration. The additive may be an amino-siloxane compound. The amino-siloxane compound includes repeated groups of silicon bonded to oxygen with at least one amine functional group. Optionally, the amino-siloxane compound may also include a hydrophilic group. The additive reacts with an aqueous phase and an organic phase to form a thin polyamide film on a porous substrate.