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1. WO2002036230 - pH DEPENDENT MEMBRANE DIFFUSION

Publication Number WO/2002/036230
Publication Date 10.05.2002
International Application No. PCT/US2001/045723
International Filing Date 01.11.2001
Chapter 2 Demand Filed 31.05.2002
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 69/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 69/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
14Dynamic membranes
B01D 71/44 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
44Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42177
B01J 20/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
28characterised by their form or physical properties
CPC
B01D 2323/36
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2323Details relating to membrane preparation
36Introduction of specific chemical groups
B01D 67/0032
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
0032by elimination of segments of the precurdor, e.g. nucleation-track membranes, lithography or laser methods
B01D 67/0088
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
0081After-treatment of organic or inorganic membranes
0088Physical treatment with compounds, e.g. swelling, coating or impregnation
B01D 69/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 69/141
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
14Dynamic membranes
141Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
B01D 71/44
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
44Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26 - B01D71/42
Applicants
  • THE PENN STATE RESEARCH FOUNDATION [US]/[US] (AllExceptUS)
  • ALLCOCK, Harry, R. [US]/[US] (UsOnly)
  • BENDER, Jared [US]/[US] (UsOnly)
  • HAMMERSTEDT, Roy, H. [US]/[US] (UsOnly)
  • SCHWARTZ, Stephen [US]/[US] (UsOnly)
  • LAREDO, Walter [US]/[US] (UsOnly)
Inventors
  • ALLCOCK, Harry, R.
  • BENDER, Jared
  • HAMMERSTEDT, Roy, H.
  • SCHWARTZ, Stephen
  • LAREDO, Walter
Agents
  • ORKIN, Russell
Priority Data
60/245,09201.11.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) pH DEPENDENT MEMBRANE DIFFUSION
(FR) DIFFUSION MEMBRANAIRE DEPENDANTE DU PH
Abstract
(EN)
A pore plugging material, for pH dependent membrane diffusion, in which cyclic olefins having phosphazene-functional moieties provide predictable erosion properties when used to plug pores is separation barriers and other porous membranes. Specific properties of the polymers are dependent on several factors, including molecular weight and identity of side groups attached to the phosphazene moiety. However, as a class, phosphazene-functional cyclic olefins provide both predictable erodibility and uniformly benign hydrolysis products and are, therefore, uniquely suitable as pore plugging polymers for separation barriers and membranes of all kinds. The invention, therefore, embraces the provision of a pH-sensitive erodible pore plugging material to pores in separation barriers and membranes of all kinds.
(FR)
L'invention concerne un matériau d'obturation des pores, destiné à la diffusion membranaire dépendante du pH, et dans lequel des oléfines cycliques ayant des fractions à fonction phosphazène développent des propriétés d'érosion prévisibles lorsqu'elles sont utilisées pour boucher des pores dans des barrières de séparation et d'autres membranes poreuses. Les propriétés spécifiques des polymères dépendent de plusieurs facteurs, y compris du poids moléculaire et de l'identité des groupes latéraux attachés à la fraction phosphazène. Toutefois, en tant que classe, les oléfines cycliques à fonction phosphazène fournissent à la fois une érodabilité prévisible et des produits d'hydrolyse douce uniforme et, par conséquent, en tant que polymères d'obturation des pores, se prêtent de manière unique à la réalisation de barrières de séparation et de membranes de tous types. Ainsi, la présente invention crée un matériau d'obturation des pores érodable et sensible au pH pour les barrières de séparation et les membranes de tous types.
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Latest bibliographic data on file with the International Bureau