EP 2835468 A1 20150211 - Filler for paper making process
Title (en)
Filler for paper making process
Title (de)
Füller für Papierherstellungsverfahren
Title (fr)
Charge pour procédé de fabrication de papier
Publication
Application
Previously filed application
PCT/SE2005/000862 20050608 WO
Priority
- EP 04445072 A 20040622
- EP 05752686 A 20050608
- SE 2005000862 W 20050608
Abstract (en)
The invention relates to a process for the production of paper which comprises providing an aqueous suspension containing cellulosic fibres, introducing into the suspension a filler comprising in pre-mixed form a clay and an anionic cellulose derivative having a degree of substitution of carboxyalkyl groups up to about 0.65, and dewatering the suspension to form a web or sheet of paper. The invention further relates to a filler comprising clay and an anionic cellulose derivative having a degree of substitution of carboxyalkyl groups up to about 0.65. The invention also relates to paper comprising the filler according to the invention. The invention further relates to a method of making a filler which comprises mixing clay with an anionic cellulose derivative having a degree of substitution of carboxyalkyl groups up to about 0.65.
IPC 8 full level
D21H 17/00 (2006.01); D21H 17/25 (2006.01); D21H 17/68 (2006.01); D21H 23/04 (2006.01)
CPC (source: EP)
D21H 17/68 (2013.01); D21H 17/25 (2013.01); D21H 23/04 (2013.01)
Citation (applicant)
- US 5759346 A 19980602 - VINSON KENNETH DOUGLAS [US]
- WO 0186067 A1 20011115 - RAISIO CHEM LTD [FI], et al
- WO 9513324 A1 19950518 - MINERALS TECH INC [US]
- US 4940785 A 19900710 - STOBER REINHARD [DE], et al
Citation (search report)
- [XY] EP 0758695 A2 19970219 - JAPAN TOBACCO INC [JP], et al
- [XY] DE 19842962 A1 20000323 - WOLFF WALSRODE AG [DE]
- [XY] EP 0227623 A1 19870701 - BOLIDEN AB [SE]
- [A] US 2003085012 A1 20030508 - JONES J PHILIP E [US], et al
- [A] US 4710270 A 19871201 - SUNDEN OLOF [FR], et al
- [AD] US 5492560 A 19960220 - FAIRCHILD GEORGE H [US]
- [A] US 6080277 A 20000627 - OBERKOFLER JOERG [AT], et al
- [A] US 3730830 A 19730501 - DRISCOLL W
- [A] US 5607552 A 19970304 - ANDERSSON KJELL [SE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005124021 A1 20051229; CA 2571083 A1 20051229; CA 2571083 C 20101221; CN 103556526 A 20140205; CN 1965128 A 20070516; EP 1778916 A1 20070502; EP 1778916 B1 20160323; EP 2835468 A1 20150211; EP 2835468 B1 20200311; ES 2574007 T3 20160614; PL 1778916 T3 20161031; PT 1778916 E 20160603; SI 1778916 T1 20160729; TW 200613611 A 20060501; TW I278556 B 20070411
DOCDB simple family (application)
SE 2005000862 W 20050608; CA 2571083 A 20050608; CN 200580018472 A 20050608; CN 201310407519 A 20050608; EP 05752686 A 20050608; EP 13188113 A 20050608; ES 05752686 T 20050608; PL 05752686 T 20050608; PT 05752686 T 20050608; SI 200532077 A 20050608; TW 94119923 A 20050616