Paper and a method of paper manufacture

Details Paper and a method of paper manufacture Paper and a method of paper manufacture

D - Textiles, Paper

21

H

D21H 21/14 (2006.01) D21H 17/00 (2006.01) D21H 17/74 (1990.01)

Patent

CA 2096738

The present invention reduces the normally marked yellowing of paper which is at least partially based on lignin-containing pulps. The invention relates to paper produced from fibre material and other paper ingredients in the form of at least one chemical. The fibre material at least partially consists of pulp that contains lignin in an amount exceeding 0.5 percent by weight, and is characterized in that the paper includes a) an acid and/or a corresponding salt of general formula (I) (the acid form) where R1 = -CHOHCH2OH or -CHOHCOOH in an amount of at least 0.05 percent by weight, calculated on the fibre material; and b) a reduction agent in an amount of at least 0.05 percent by weight, calculated on the fibre material. The invention relates also to a method for manufacturing such a paper.

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