Global Patent Index - EP 1055774 A1

EP 1055774 A1 2000-11-29 - Cationically modified optical brightener dispersion for the paper industry

Title (en)

Cationically modified optical brightener dispersion for the paper industry

Title (de)

Kationisch modifizierte Aufhellerdispersion für die Papierindustrie

Title (fr)

Dispersion d'azurant optique modifiée cationiquement pour l'industrie papetière

Publication

EP 1055774 A1 (DE)

Application

EP 00110803 A

Priority

DE 19923778 A

Abstract (en)

A cationically modified brightening dispersion (I) for the paper industry contains (A) an anionic optical brightener (B) a non-ionic and/or weakly anionic or weakly cationic protective colloid and (C) a cationic or actionicised polymer. Independent claims are included for : (a) a process for the production of (I) by mixing (A) and (B) in an aqueous medium followed by the addition of (C); and (b) paper, containing or coated with (I).

Abstract (de)

Beschrieben wird eine kationisch modifizierte Aufhellerdispersion für die Papierindustrie, enthaltend (a) einen anionischen optischen Aufheller, (b) ein nichtionisches bzw. anionisches oder schwach kationisches Schutzkolloid und (c) ein kationisches oder kationisiertes Polymer. Die Erfindung betrifft ferner die Herstellung dieser Aufhellerdispersion, deren Verwendung sowie diese Dispersion enthaltende bzw. damit bestrichene Papier.

IPC 1-7 (main, further and additional classification)

D21H 21/30; C08K 5/00

IPC 8 full level (invention and additional information)

B41M 5/52 (2006.01); D21H 21/30 (2006.01); B41M 5/00 (2006.01)

CPC (invention and additional information)

B41M 5/52 (2013.01); D21H 21/30 (2013.01); B41M 5/5218 (2013.01); B41M 5/5227 (2013.01); B41M 5/5236 (2013.01); B41M 5/5245 (2013.01); B41M 5/5254 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19923778 A1 20001123; EP 1055774 A1 20001129

INPADOC legal status


2007-05-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20061123

2005-01-26 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20041208

2001-08-16 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-11-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001004

2000-11-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-11-29 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI