EP 2411113 A4 20141029 - CRYOTROPIC HYDROGELS AND THEIR USE AS FILTERS
Title (en)
CRYOTROPIC HYDROGELS AND THEIR USE AS FILTERS
Title (de)
KRYOTROPE HYDROGELE UND IHRE VERWENDUNG ALS FALTER
Title (fr)
HYDROGELS CRYOTROPES ET LEUR UTILISATION COMME FILTRES
Publication
Application
Priority
- SE 2010050285 W 20100316
- SE 0950156 A 20090316
Abstract (en)
[origin: WO2010107375A1] There is provided a particle-filter comprising at least one hydrogel formed in aqueous solution at a temperature below O°C. The filter can arrest particulates of smoke by physisorption on the solid surface of the gel or by chemisorption if the gel is suitably functionalized. The effectiveness of filter in arresting the solid particles and the pressure drop can be controlled by varying the porosity and the pore size distribution of the filter which in turn can be modulated by varying the monomer to water and monomer to cross-linker ratio in the pre-polymer solution. The filter is able to reduce the particle content of the smoke. There is further provided a cigarette comprising at least one particle-filter according as well as a method for the filtration of smoke.
IPC 8 full level
A24D 1/04 (2006.01); A24D 3/08 (2006.01); B01D 39/08 (2006.01); B01D 39/16 (2006.01)
CPC (source: EP US)
A24D 3/0229 (2013.01 - US); A24D 3/048 (2013.01 - EP US); A24D 3/066 (2013.01 - EP US); A24D 3/068 (2013.01 - EP US); A24D 3/08 (2013.01 - EP US); B01D 39/1676 (2013.01 - EP US); B01D 53/02 (2013.01 - EP US); B01D 2239/0421 (2013.01 - EP US); B01D 2253/202 (2013.01 - EP US); B01D 2253/34 (2013.01 - EP US); B01D 2257/7022 (2013.01 - EP US); B01D 2257/7027 (2013.01 - EP US); B01D 2257/93 (2013.01 - EP US)
Citation (search report)
- [X] EP 1356865 A1 20031029 - OMG AG & CO KG [DE]
- [X] KR 100743562 B1 20070727 - KUMOH NAT INST TECHNOLOGY [KR]
- [X] WO 2007108770 A1 20070927 - PROTISTA BIOTECHNOLOGY AB [SE], et al
- [XI] US 3632361 A 19720104 - BATTISTA ORIANDO A
- [A] ERA JAIN ET AL: "Macroporous interpenetrating cryogel network of poly(acrylonitrile) and gelatin for biomedical applications", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE, KLUWER ACADEMIC PUBLISHERS, BO, vol. 20, no. 1, 3 July 2008 (2008-07-03), pages 173 - 179, XP019770650, ISSN: 1573-4838
- See references of WO 2010107375A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010107375 A1 20100923; CA 2758056 A1 20100923; CN 102740946 A 20121017; EP 2411113 A1 20120201; EP 2411113 A4 20141029; US 2012160254 A1 20120628; US 2014113786 A1 20140424
DOCDB simple family (application)
SE 2010050285 W 20100316; CA 2758056 A 20100316; CN 201080011387 A 20100316; EP 10753772 A 20100316; US 201013256976 A 20100316; US 201414146172 A 20140102