EP 0192600 A1 19860827 - Aqueous optical brighhtener compositions and their use in paper coatings.
Title (en)
Aqueous optical brighhtener compositions and their use in paper coatings.
Title (de)
Wässrige Aufhellerpräparate und deren Verwendung im Papierstrich.
Title (fr)
Compositions aqueuses d'azurants optiques et leur utilisation dans le couchage du papier.
Publication
Application
Priority
DE 3502038 A 19850123
Abstract (en)
[origin: US4717502A] Aqueous optical brightener compositions consisting essentially of: (a) at least one optical brightener of formula <IMAGE> in which R1 is hydrogen or -SO3M; R2 is hydrogen or -SO3M; R3 is hydrogen, C2-3-hydroxyalkyl, C1-4-alkyl, -CH2-CH2-CN or -CH2-CH2-CONH2; R4 is hydrogen, C1-4-alkyl, C2-3-hydroxyalkyl, hydroxy-ethoxy-ethyl, N,N-Bis-(C1-3-alkyl)-amino-C2-6-alkyl or benzyl; or R3 and R4 together with the neighboring nitrogen atom signify a morpholine, pyrrolidine, piperidine or N-methylpiperazine ring; and M is hydrogen or a colorless cation; provided that at most one of R3 and R4 is hydrogen; (b) polyethylene glycol with an average molecular weight in the range of 1000 to 3000; and (c) water; 10 to 500 parts by weight of component (b) being present per 100 parts by weight of component (a), and component (c) constituting at least 20% of the composition, are storage stable optical brightener compositions, which are eminently suitable for the formulation of aqueous coating compositions especially such in which at least some of the binder is a synthetic latex; with these coating compositions there may be obtained very white coated papers which are optically brightened at least in the coating.
Abstract (de)
Unter Verwendung von bestimmten optischen Aufhellern und bestimmten Polyäthylenglykolen werden wässrige Aufhellerpräparate hergestellt, die sich hervorragend zum optischen Aufhellen von Papierstrich eignen, besonders wenn die Papierstreichmassen einen synthetischen Latex enthalten und diese Papierstreichmassen zur Herstellung von beschichteten Papieren dienen.
IPC 1-7
IPC 8 full level
C09D 7/00 (2006.01); C09B 67/44 (2006.01); C09D 7/12 (2006.01); D06L 3/12 (2006.01); D06L 4/664 (2017.01); D21H 19/44 (2006.01); D21H 21/30 (2006.01)
CPC (source: EP US)
D06L 4/664 (2016.12 - EP US); D21H 21/30 (2013.01 - EP US)
Citation (search report)
- [YD] FR 2142054 A1 19730126 - ICI LTD
- [Y] FR 1329353 A 19630607 - GEIGY AG J R
- [Y] FR 2095752 A5 19720211 - ICI LTD
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 4717502 A 19880105; AT E44785 T1 19890815; DE 3502038 A1 19860724; DE 3664499 D1 19890824; EP 0192600 A1 19860827; EP 0192600 B1 19890719; JP S61174269 A 19860805; ZA 86526 B 19870826
DOCDB simple family (application)
US 82004386 A 19860121; AT 86810011 T 19860114; DE 3502038 A 19850123; DE 3664499 T 19860114; EP 86810011 A 19860114; JP 1028886 A 19860122; ZA 86526 A 19860123