EP 0333368 A2 19890920 - Paper sizing methods and compositions.
Title (en)
Paper sizing methods and compositions.
Title (de)
Verfahren und Zusammensetzungen für die Papierleimung.
Title (fr)
Procédés et compositions pour l'encollage du papier.
Publication
Application
Priority
GB 8806432 A 19880318
Abstract (en)
The manufacture of sized paper, by adding a sizing agent and an aluminium compound to paper-making stock or by surface-sizing paper with a pre-blend of the agent and the compound, is carried out at a neutral or alkaline pH, typically a pH above 6, and so that the agent and the compound are added simultaneously to the paper-making stock or are applied simultaneously to the paper surface. If the agent and the compound are used as a one-shot pre-blend, this is made on or immediately before use.
IPC 1-7
IPC 8 full level
D21H 17/35 (2006.01); D21H 17/53 (2006.01); D21H 17/62 (2006.01); D21H 17/63 (2006.01); D21H 17/67 (2006.01); D21H 23/18 (2006.01); D21H 23/28 (2006.01)
CPC (source: EP)
D21H 23/18 (2013.01); D21H 23/28 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0333368 A2 19890920; EP 0333368 A3 19910327; EP 0333368 B1 19960612; AT E139281 T1 19960615; AU 3142989 A 19890921; AU 619260 B2 19920123; CA 1325500 C 19931228; DE 68926632 D1 19960718; DE 68926632 T2 19961121; DK 131889 A 19890919; DK 131889 D0 19890317; DK 173063 B1 19991213; ES 2087862 T3 19960801; FI 891184 A0 19890313; FI 891184 A 19890919; FI 94974 B 19950815; FI 94974 C 19951127; GB 8806432 D0 19880420; JP 2656830 B2 19970924; JP H026680 A 19900110; NO 180345 B 19961223; NO 180345 C 19970402; NO 891116 D0 19890315; NO 891116 L 19890919; NZ 228297 A 19910726; PT 90040 A 19891110; PT 90040 B 19950301; ZA 891925 B 19900530
DOCDB simple family (application)
EP 89302253 A 19890307; AT 89302253 T 19890307; AU 3142989 A 19890317; CA 594070 A 19890317; DE 68926632 T 19890307; DK 131889 A 19890317; ES 89302253 T 19890307; FI 891184 A 19890313; GB 8806432 A 19880318; JP 6398889 A 19890317; NO 891116 A 19890315; NZ 22829789 A 19890310; PT 9004089 A 19890317; ZA 891925 A 19890314