公开(公告)号：US20220080363A1

公开(公告)日：2022-03-17

申请号：US17415854

申请日：2019-09-30

Applicant: TORAY INDUSTRIES, INC.

Inventor： Tomoya YOSHIZAKI ,  Tsuyoshi HAMADA ,  Masami OGATA ,  Harutoki SHIMURA ,  Takafumi OGAWA

IPC: B01D69/12 ,  B01D71/56 ,  B01D69/10 ,  B01D69/02 ,  B01D65/08 ,  B32B27/34

Abstract: The present invention relates to a composite semipermeable membrane including: a substrate; a porous support layer disposed on the substrate; and a separation functional layer disposed on the porous support layer, in which the separation functional layer includes: a first layer including a crosslinked aromatic polyamide; and a coating layer existing on the first layer and including an aliphatic polyamide including a fluorine atom, and the composite semipermeable membrane has a proportion of the number of fluorine atoms to the total number of atoms of all elements of 0.5% or more and 8% or less, and has a ratio (N/O ratio) of the number of nitrogen atoms to the number of oxygen atoms of 0.8 or more and 1.3 or less.

公开(公告)号：US20180311623A1

公开(公告)日：2018-11-01

申请号：US15771346

申请日：2016-10-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Jun OKABE ,  Koji NAKATSUJI ,  Tsuyoshi HAMADA ,  Masaki HIGASHI

IPC: B01D69/12 ,  B01D71/56 ,  B01D69/10 ,  B01D69/02

CPC classification number: B01D69/02 ,  B01D69/10 ,  B01D69/12 ,  B01D71/56

Abstract: An object of the present invention is to provide a composite semipermeable membrane which has a high permeation rate and high salt removal performance and is excellent in terms of performance stability during long-term operation. The composite semipermeable membrane of the present invention includes: a supporting membrane including a substrate and a porous supporting layer; and a separation functional layer disposed on the porous supporting layer, the separation functional layer includes a crosslinked polyamide and a hydrophilic polymer having an acidic group, and in the separation functional layer, a ratio of (molar equivalent of amino groups)/(molar equivalent of amide groups) is 0.18 or less.

公开(公告)号：US20160243503A1

公开(公告)日：2016-08-25

申请号：US15025814

申请日：2014-09-30

Applicant: TORAY INDUSTRIES, INC.

Inventor： Jun OKABE ,  Koji NAKATSUJI ,  Keisuke YONEDA ,  Tsuyoshi HAMADA

IPC: B01D69/12 ,  B01D71/56 ,  B01D65/08 ,  B01D67/00 ,  B01D69/02 ,  B01D69/10 ,  B01D71/38

CPC classification number: B01D69/125 ,  B01D61/025 ,  B01D65/08 ,  B01D67/0006 ,  B01D67/0088 ,  B01D69/02 ,  B01D69/10 ,  B01D71/38 ,  B01D71/56 ,  B01D71/82 ,  B01D2323/30 ,  B01D2325/24 ,  B01D2325/36 ,  C08L33/02 ,  C08L77/06

Abstract: The present invention provides a composite semipermeable membrane achieving high permeate amount and having high capability to inhibit adhesion of foulants to the membrane surface. The present invention relates to a composite semipermeable membrane including: a supporting membrane which includes a substrate and a porous supporting layer; and a polyamide separation functional layer formed on the porous supporting layer, in which an acidic group-containing hydrophilic polymer is introduced onto the surface of the separation functional layer via amide linkage, and relates to a method for producing such a composite semipermeable membrane.

Abstract translation: 本发明提供了一种复合半透膜，其实现了高渗透量，并具有高的抑制污垢附着在膜表面的能力。 复合半透膜技术领域本发明涉及一种复合半透膜，其包括：支撑膜，其包括基板和多孔支撑层; 以及形成在多孔支持层上的聚酰胺分离功能层，其中含酸性基团的亲水性聚合物通过酰胺键引入到分离功能层的表面上，涉及制备这种复合半透膜的方法。