Title (en) Aqueous dispersion used as needling aid for producing needle mineral fiber felts and use of an aqueous dispersion
Title (de) Wässrige Dispersion als Nadelhilfsmittel zur Herstellung von Nadelmineralfaserfilzen und Verwendung einer wässrigen Dispersion
Title (fr) Dispersion aqueuse utilisée comme auxiliaire d'aiguilletage permettant de produire des feutres aiguilletés en fibres minérales et utilisation d'une dispersion aqueuse
Publication EP 2781635 A1 20140924 (EN)
Application EP 14157479 A 20140303
Priority IT VE20130008 A 20130318
Abstract (en) An aqueous dispersion used as needling aid for producing needle mineral fiber felts characterized by comprising: (a) at least one perfluoropolyether, (b) at least one water-soluble polar aprotic solvent, (c) at least one alkali metal salt chosen among lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, sodium bicarbonate, lithium bicarbonate, potassium bicarbonate, lithium chloride, sodium chloride, potassium chloride, lithium bromide, sodium bromide, potassium bromide, lithium fluoride, sodium fluoride, potassium fluoride, lithium iodide, sodium iodide, potassium iodide, lithium oxide, sodium oxide, potassium oxide and preferably lithium hydroxide, potassium hydroxide, lithium carbonate, potassium carbonate, lithium bicarbonate, potassium bicarbonate, lithium chloride, potassium chloride, lithium bromide, potassium bromide, lithium fluoride, potassium fluoride, lithium iodide, potassium iodide, lithium oxide, potassium oxide and most preferably potassium hydroxide, potassium carbonate, potassium bicarbonate, potassium chloride, potassium bromide, potassium fluoride, potassium iodide, potassium oxide and mixtures thereof, (d) and the balance being water.
IPC 8 full level D04H 1/4209 (2012.01); D04H 1/4218 (2012.01); D04H 1/46 (2012.01); D06M 15/53 (2006.01)
CPC (source: EP) D04H 1/4209 (2013.01); D04H 1/4218 (2013.01); D04H 1/46 (2013.01); D06M 15/53 (2013.01)
Citation (applicant) • US 4654235 A 19870331 - EFFENBERGER JOHN A [US], et al • EP 0819788 A2 19980121 - SAINT GOBAIN ISOVER [FR] • EP 1022260 A1 20000726 - SAINT GOBAIN ISOVER [FR]
Citation (search report) • [IDA] EP 0819788 A2 19980121 - SAINT GOBAIN ISOVER [FR] • [AD] EP 1022260 A1 20000726 - SAINT GOBAIN ISOVER [FR] • [A] EP 0372848 A2 19900613 - BRITISH PETROLEUM CO PLC [GB] • [A] WO 03044113 A1 20030530 - DU PONT [US], et al
Cited by EP3260589A1; ITUA20164647A1; WO2018050924A1
Designated contracting state (EPC) AL 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 RS SE SI SK SM TR
Designated extension state (EPC) BA ME
DOCDB simple family (publication) EP 2781635 A1 20140924; EP 2781635 B1 20151223; IT VE20130008 A1 20140919; PL 2781635 T3 20160630; SI 2781635 T1 20160331
DOCDB simple family (application) EP 14157479 A 20140303; IT VE20130008 A 20130318; PL 14157479 T 20140303; SI 201430014 T 20140303