Aqueous solutions of optical brighteners

Details Aqueous solutions of optical brighteners Aqueous solutions of optical brighteners

D - Textiles, Paper

21

H

D21H 21/30 (2006.01) D21H 19/46 (2006.01)

Patent

CA 2600299

The instant invention relates to storage stable aqueous solutions of stilbene optical brighteners with polyvinyl alcohols which can be directly used by the papermaker in that they may be diluted with water and/or be metered directly into a coating 5 composit ion, to provide coated papers of a particularly high whiteness.

L'invention porte sur des solutions aqueuses stables d'éclaircissants optique de stilbène et d'alcools polyvinyliques, utilisables directement par le papetier car solubles dans l'eau et/ou pouvant être dosées puis ajoutées à une composition de revêtement pour donner des papiers couchés d'une blancheur particulièrement élevée.

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