D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 9/00 (2006.01) D21C 9/10 (2006.01)
Patent
CA 2535519
The present invention provides a method for removing unsaturated uronic acid contained in chemical pulp for papermaking, characterized by adding glucuronidase. According to the preferred embodiment of the present invention, in an ECF or TCF bleaching method using no molecular chlorine, unsaturated uronic acid can be reduced while controlling a bleaching cost, and a brightness reversion property of pulp can be improved.
Aoki Yuko
Ikeda Tsutomu
Kawabata Yasuyuki
Ohi Hiroshi
Yokoyama Tomoya
Fetherstonhaugh & Co.
Mitsubishi Gas Chemical Company Inc.
University Of Tsukuba
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