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US08859679B2 Aqueous solutions of optical brighteners 有权
荧光增白剂的水溶液

Aqueous solutions of optical brighteners
摘要:
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 composition, to provide coated papers of a particularly high whiteness.
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