Process for the whitening of paper coating compositions and...

Details Process for the whitening of paper coating compositions and... Process for the whitening of paper coating compositions and...

D - Textiles, Paper

21

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8/52

D21H 19/34 (2006.01) D21H 19/42 (2006.01) D21H 19/52 (2006.01) D21H 21/30 (2006.01)

Patent

CA 2021559

Process for the whitening of paper coating compositions and also whitener preparations for this Process A b s t r a c t Combinations of cellulose powder (average par- ticle size below 50 µm) and anionic cellulose optical brighteners and also optionally coating pigments are eminently suitable for the whitening of paper coating compositions. Besides an excellent optical brightening effect, the resulting papers have an improved light fastness.

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