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1. (WO2009118248) IMPROVED OPTICAL BRIGHTENING COMPOSITIONS

Pub. No.:    WO/2009/118248    International Application No.:    PCT/EP2009/052921
Publication Date: Oct 1, 2009 International Filing Date: Mar 12, 2009
IPC: D21H 17/66
D21H 21/16
D21H 21/30
Applicants: CLARIANT FINANCE (BVI) LIMITED
JACKSON, Andrew, Clive
PUDDIPHATT, David
KLEIN, Cedric
Inventors: JACKSON, Andrew, Clive
PUDDIPHATT, David
KLEIN, Cedric
Title: IMPROVED OPTICAL BRIGHTENING COMPOSITIONS
Abstract:
A sizing composition for paper, characterised in that the sizing composition comprises (a) at least one optical brightener of formula (1), (b) a magnesium salt; and (c) a binding agent, which is selected from the group consisting of native starch, enzymatically modified starch and chemically modified starch; 0.1 to 15 parts of component (b) being present per part of component (a).