公开(公告)号：WO1990011821A1

公开(公告)日：1990-10-18

申请号：PCT/US1990001453

申请日：1990-03-16

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  SWAMIKANNU, A., Xavier

IPC: B01D67/00

CPC classification number: C08F8/14 ,  B01D69/125 ,  B01D71/40 ,  C08L33/02 ,  C08L33/14 ,  C08F20/00 ,  C08L2666/04

Abstract: Semipermeable membranes comprising polyesters which are resistant to chlorine are prepared by casting on a porous support backing material either a solution comprising a blend of a polymeric hydroxyalkyl acrylate and a polymeric monocarboxylic acid, or a polymeric polycarboxylic acid, or a solution containing a prepolymer which has been formed by the reaction of a polymeric hydroxyalkyl acrylate with an acryloyl halide or an anhydride of a dicarboxylic acid. The porous support backing material is contacted with the solution at contacting conditions, following which the excess solution is removed and the solution-coated porous support backing material is then cured at curing conditions. This membrane will possess excellent characteristics of salt rejection and flux as well as being resistant to the action of chlorine which is present in water which is subjected to a desalination process.

Abstract translation: 包含耐氯的聚酯的半透膜可以通过在多孔载体背衬材料上浇铸，该溶液包含聚合物丙烯酸羟烷基酯和聚合单羧酸或聚合多元羧酸的共混物，或含有预聚物的溶液 通过丙烯酸羟基烷基酯与丙烯酰卤或二羧酸的酸酐的反应形成。 多孔支撑背衬材料在接触条件下与溶液接触，然后除去过量的溶液，然后在固化条件下固化溶液涂覆的多孔载体材料。 该膜将具有优异的脱盐和助熔剂特性，并且耐受在经过脱盐处理的水中存在的氯的作用。

公开(公告)号：WO1990013353A1

公开(公告)日：1990-11-15

申请号：PCT/US1990002533

申请日：1990-05-07

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  KULKARNI, Sudhir, S. ,  YATES, Stephen, F. ,  SWAMIKANNU, A., Xavier

IPC: B01D71/16

CPC classification number: B01D67/0093 ,  B01D71/16 ,  B01D2323/30 ,  C08B15/005

Abstract: Membranes which are used for the separation of gases comprise cellulose acetate membranes which have been crosslinked with an organic titanate. The membranes are prepared by solvent exchanging a cellulose acetate membrane through a series of baths of decreasing polarity followed by treating the membrane with a crosslinking agent comprising an organic titanate in an organic solvent solution which possesses a relatively low polarity. The resulting membranes will retain the original excellent separation characteristics while concomitantly possessing greater temperature and pressure stability and flux characteristics.

公开(公告)号：WO1992010280A1

公开(公告)日：1992-06-25

申请号：PCT/US1991006365

申请日：1991-09-05

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  SWAMIKANNU, A., Xavier

IPC: B01D69/12

CPC classification number: B01D69/12 ,  B01D71/80

Abstract: Thin film composite ultrafiltration membrane which possesses desirable properties or characteristics may be prepared by casting a solution of a polyelectrolyte complex on a microporous support to form a thin film of the polyelectrolyte complex on the surface of the supports. The thickness of the polyelectrolyte complex membrane will range from about 600 to about 3,000 Å. This membrane may then be used for the separation of low molecular weight solutes such as, for example, the separation of glucose from sucrose and higher molecular weight sugars.

公开(公告)号：EP0467903A1

公开(公告)日：1992-01-29

申请号：EP90905328.0

申请日：1990-03-16

Applicant: ALLIED-SIGNAL INC

Inventor： SWAMIKANNU, A., Xavier

IPC: B01D67 ,  B01D69 ,  B01D71 ,  C02F1 ,  C08F8 ,  C08L33

CPC classification number: C08F8/14 ,  B01D69/125 ,  B01D71/40 ,  C08L33/02 ,  C08L33/14 ,  C08F20/00 ,  C08L2666/04

Abstract: Des membranes semi-perméables comprenant des polyesters et résistant au chlore sont préparées en coulant sur un support poreux, soit une solution comprenant un mélange d'hydroxyalkylacrylate polymérique et d'un acide monocarboxylique polymérique, soit un acide monocarboxylique polymérique, soit une solution contenant un prépolymère formé par la réaction d'un hydroxyalkylacrylate polymérique avec un acryloylhalogénure ou un anhydride d'un acide dicarboxylique. Le support poreux est mis au contact de la solution dans des conditions de contact, puis la solution en excédent est retirée et le support poreux recouvert par la solution est ensuite recuit dans des conditions de polymérisation. Cette membrane possédera d'excellentes caractéristiques de rejet des sels et d'écoulement, tout en résistant à l'action du chlore présent dans l'eau soumise à un processus de dessalement.