公开(公告)号：US2867575A

公开(公告)日：1959-01-06

申请号：US45272954

申请日：1954-08-27

Applicant: STAMICARBON

Inventor： DE JONG GEERT J

IPC: C08J5/22

CPC classification number: C08J5/2218

Abstract: A selective ion-permeable membrane comprising a hydrophilic sheet of a synthetic ionexchange polymer having an integral hydrophobic margin of the same polymer as the sheet but containing no ionogenic groups is produced by subjecting a hydrophobic sheet of polyethylene to a chemical treatment, e.g. with a liquid to introduce ionogenic groups into the sheet, the margin being either protected from the liquid, e.g. by being held out of contact therewith, or by being thicker than the rest of the sheet whereby an untreated core is left in the margin. In an example, a strip of polyethylene is passed continuously through chlorosulphonic acid, e.g. at 30 DEG C. to 40 DEG C., the edges of the strip being upturned to avoid contact with the acid. Specification 747,948 is referred to.

公开(公告)号：US2861188A

公开(公告)日：1958-11-18

申请号：US41437554

申请日：1954-03-05

Applicant: STAMICARBON

Inventor： HENDRIK DIJKSTRA

IPC: G01N23/08

CPC classification number: G01N23/083

公开(公告)号：US2860782A

公开(公告)日：1958-11-18

申请号：US63633357

申请日：1957-01-25

Applicant: STAMICARBON

Inventor： FONTEIN FREERK J

IPC: B03B5/44

CPC classification number: B03B5/447

公开(公告)号：US2860252A

公开(公告)日：1958-11-11

申请号：US50585055

申请日：1955-05-03

Applicant: STAMICARBON

Inventor： HENDRIK DIJKSTRA

IPC: G01N23/203 ,  G01N33/22

CPC classification number: G01N33/222 ,  G01N23/203

公开(公告)号：US2819795A

公开(公告)日：1958-01-14

申请号：US49046855

申请日：1955-02-25

Applicant: STAMICARBON

Inventor： FONTEIN FREERK J ,  CORNELIS DIJKSMAN

IPC: B04C5/04 ,  B04C5/081 ,  B04C5/12 ,  B04C5/16 ,  B04C5/24 ,  B04C5/28

CPC classification number: B04C5/081 ,  B04C5/04 ,  B04C5/12 ,  B04C5/16 ,  B04C5/24 ,  B04C5/28

公开(公告)号：US2817441A

公开(公告)日：1957-12-24

申请号：US36046453

申请日：1953-06-09

Applicant: STAMICARBON

Inventor： LEEMAN JAN N J ,  FONTEIN FREERK J

IPC: B03B5/34 ,  B03B9/00 ,  B04C5/081

CPC classification number: B03B9/005 ,  B03B5/34 ,  B04C5/081

公开(公告)号：US2814478A

公开(公告)日：1957-11-26

申请号：US46477654

申请日：1954-10-26

Applicant: STAMICARBON

Inventor： LOON WILLEM VAN

IPC: F27B1/00

CPC classification number: F27B1/00

公开(公告)号：US2813833A

公开(公告)日：1957-11-19

申请号：US36230553

申请日：1953-06-17

Applicant: STAMICARBON

Inventor： REVALLIER LEONARDUS J

IPC: A01J11/02 ,  B01B1/02 ,  B01D19/02 ,  B01F5/00 ,  C05B1/10 ,  C13B25/02

CPC classification number: C13B25/02 ,  A01J11/02 ,  B01B1/02 ,  B01D19/02 ,  B01F5/0057 ,  C05B1/10 ,  Y10S261/54

公开(公告)号：US2810470A

公开(公告)日：1957-10-22

申请号：US42777054

申请日：1954-04-27

Applicant: STAMICARBON

Inventor： ZEEGERS JAN J

IPC: B65G23/00

CPC classification number: B65G23/00 ,  B65G2812/02089

公开(公告)号：US2808252A

公开(公告)日：1957-10-01

申请号：US56430256

申请日：1956-02-08

Applicant: STAMICARBON

Inventor： KRAPELS JOHANNES G

IPC: E21C27/34

CPC classification number: E21C27/34