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1. WO1985000176 - STARCH-BASED SEMIPERMEABLE FILMS

Publication Number WO/1985/000176
Publication Date 17.01.1985
International Application No. PCT/US1984/000913
International Filing Date 14.06.1984
IPC
B01D 67/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
B01D 71/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
08Polysaccharides
C08L 3/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
02Starch; Degradation products thereof, e.g. dextrin
CPC
B01D 67/003
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
0002Organic membrane formation
0023by inducing porosity into non porous precursor membranes
003by selective elimination of components, e.g. by leaching
B01D 71/08
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
08Polysaccharides
C08L 3/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
02Starch; Degradation products thereof, e.g. dextrin
Applicants
  • UNITED STATES OF AMERICA, represented by THE SECRE [US]/[US]
Inventors
  • OTEY, Felix, H.
  • WESTHOFF, Richard, P.
Agents
  • OLIFF, James, A.
Priority Data
507,19123.06.1983US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) STARCH-BASED SEMIPERMEABLE FILMS
(FR) FILMS SEMI-PERMEABLES A BASE D'AMIDON
Abstract
(EN)
Semipermeable films useful as dialysis membranes are prepared from starch-based composites. The films are shaped by conventional methods from a plasticized matrix comprising highly gelatinized starch and ethylene acrylic acid copolymer neutralized with a strong alkali. These films are remarkably transparent and resistant to degradation in the presence of aqueous solutions.
(FR)
Films semi-perméables utiles en tant que membranes de dialyse, préparés à partir de composés à base d'amidon. Les films sont façonnés par des procédés conventionnels à partir d'une matrice plastifiée comprenant un amidon à gélatinisation élevée et un copolymère d'acide acrylique d'éthylène neutralisé avec un alcali fort. Ces films sont remarquablement transparents et résistants à la dégradation en présence de solutions aqueuses.
Also published as
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