EP 0499578 A1 19920819 - Paper coatings.
Title (en)
Paper coatings.
Title (de)
Beschichtungen für Papier.
Title (fr)
Revêtements pour papier.
Publication
Application
Priority
GB 9101965 A 19910130
Abstract (en)
A method for reducing the particle size of cellulose in water and/or an organic solvent (preferably water) comprising a) forming a slurry or paste of cellulose material in water, the cellulose material having a dry weight average particle size of 1 to 100 microns (preferably 1 to 20 microns); and b) reducing the average particle size of the cellulose material to 1 to 10 microns (preferably 1 to 3 microns), preferably by milling, to form a carrier ; an additive being optionally added to the water prior to addition of cellulose or to end of operations a) or b) above. The additive when added, is preferably an optical brightener. The method is useful in the field of paper coatings where it permits more efficient use of additives.
IPC 1-7
IPC 8 full level
D21H 21/28 (2006.01); D21H 17/24 (2006.01); D21H 19/42 (2006.01); D21H 21/52 (2006.01)
CPC (source: EP KR)
D21H 19/00 (2013.01 - KR); D21H 19/42 (2013.01 - EP); D21H 21/52 (2013.01 - EP)
Citation (search report)
- [A] EP 0201895 B1 19910410
- [A] FR 1239314 A 19600826 - GEVAERT PHOTO PROD NV
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL PT SE
DOCDB simple family (publication)
EP 0499578 A1 19920819; EP 0499578 B1 19960522; AT E138436 T1 19960615; AU 1048792 A 19920806; CA 2060105 A1 19920731; DE 69210856 D1 19960627; DE 69210856 T2 19961219; FI 920370 A0 19920128; FI 920370 A 19920731; GB 9101965 D0 19910313; JP H04289294 A 19921014; KR 920014993 A 19920826; NO 920372 D0 19920128; NO 920372 L 19920731
DOCDB simple family (application)
EP 92810035 A 19920121; AT 92810035 T 19920121; AU 1048792 A 19920128; CA 2060105 A 19920128; DE 69210856 T 19920121; FI 920370 A 19920128; GB 9101965 A 19910130; JP 1447892 A 19920130; KR 920001305 A 19920129; NO 920372 A 19920128