Process for producing sized paper or cardboard with dyes or...

Details Process for producing sized paper or cardboard with dyes or... Process for producing sized paper or cardboard with dyes or...

D - Textiles, Paper

21

H

8/52, 9/56

D21H 17/55 (2006.01) D21H 21/28 (2006.01) D21H 21/30 (2006.01)

Patent

CA 1120212

A process for producing paper or cardboard which is sized in the pulp with epoxide-polyamide reaction products is disclosed. I this process there are to the fibre suspension (A) at least one water-soluble, anionic, substantive direct dye and/or optical brightener, followed by (B) at least one water-soluble or water-dispersible salt of an epoxide-amine-polymide reaction product, whereupon the fibre suspension is further processed into paper or into cardboard.

309946

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