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1. (WO2010078234) POROUS MEMBRANES WITH MULTIPLE ZONES HAVING DIFFERENT PORE SIZES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2010/078234 International Application No.: PCT/US2009/069565
Publication Date: 08.07.2010 International Filing Date: 28.12.2009
IPC:
B01D 69/02 (2006.01) ,B01D 69/12 (2006.01) ,B01D 71/26 (2006.01) ,B29C 45/56 (2006.01) ,B29C 47/06 (2006.01) ,B01D 67/00 (2006.01) ,B01D 69/08 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02
characterised by their properties
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
12
Composite membranes; Ultra-thin membranes
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
26
Polyalkenes
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
46
Means for plasticising or homogenising the moulding material or forcing it into the mould
56
using mould parts movable during or after injection, e.g. injection-compression moulding
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
04
of multilayered or multicoloured articles
06
Multilayered articles
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
67
Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
08
Hollow fibre membranes
Applicants:
HESTER, Jonathan F. [US/US]; US (UsOnly)
MROZINSKI, James S. [US/US]; US (UsOnly)
DEHN, Derek J. [US/US]; US (UsOnly)
3M INNOVATIVE PROPERTIES COMPANY [US/US]; 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US (AllExceptUS)
Inventors:
HESTER, Jonathan F.; US
MROZINSKI, James S.; US
DEHN, Derek J.; US
Agent:
PASTIRIK, Daniel R.,; 3M Center Office of Intellectual Property Counsel Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US
Priority Data:
61/142,05631.12.2008US
Title (EN) POROUS MEMBRANES WITH MULTIPLE ZONES HAVING DIFFERENT PORE SIZES
(FR) MEMBRANES POREUSES À ZONES MULTIPLES AYANT DIFFÉRENTES TAILLES DE PORES
Abstract:
(EN) A porous membrane that includes a first zone, the first zone including a crystallizable polymer; and a first nucleating agent, the first nucleating agent having a first concentration in the first zone, the first zone having a first average pore size; and a second zone, the second zone including a crystallizable polymer; and a second nucleating agent, the second nucleating agent having a second concentration in the second zone, the second zone having a second average pore size, wherein the crystallizable polymer is the same in the first zone and second zone, wherein the first average pore size is not the same as the second average pore size, wherein the first nucleating agent and the second nucleating agent are the same or different, wherein the first concentration and the second concentration agent are the same or different and with the proviso that the first nucleating agent and the first concentration are not the same as the second nucleating agent and the second concentration. Methods of making membranes are also disclosed.
(FR) L'invention concerne une membrane poreuse qui comprend une première zone, la première zone comprenant un polymère cristallisable; et un premier agent de nucléation, le premier agent de nucléation ayant une première concentration dans la première zone, la première zone ayant une première taille de pore moyenne; et une seconde zone, la seconde zone comprenant un polymère cristallisable; et un second agent de nucléation, le second agent de nucléation ayant une seconde concentration dans la seconde zone, la seconde zone ayant une seconde taille de pore moyenne. Selon l'invention, le polymère cristallisable est le même dans la première zone et dans la seconde zone, la première taille de pore moyenne n'est pas la même que la seconde taille de pore moyenne, le premier agent de nucléation et le second agent de nucléation sont identiques ou différents, la première concentration et la seconde concentration sont identiques ou différentes, à condition que le premier agent de nucléation et la première concentration ne soient pas identiques au second agent de nucléation et à la seconde concentration. L'invention concerne également des procédés de fabrication de membranes.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)