Invention Grant
- Patent Title: Method for bleaching pulp
- Patent Title (中): 漂白纸浆的方法
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Application No.: US14390051Application Date: 2013-04-03
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Publication No.: US09540767B2Publication Date: 2017-01-10
- Inventor: Tapani Vuorinen , Anna-Stiina Jääskeläinen , Andreas Lindberg
- Applicant: Kemira Oyj , Andritz Oy , UPM-Kymmene Corporation , Stora Enso Oyj , Metsä Fibre Oy
- Applicant Address: FI Helsinki FI Helsinki FI Helsinki FI Helsinki FI Helsinki
- Assignee: KEMIRA OYJ,ANDRITZ OY,UPM-KYMMENE CORPORATION,STORA ENSO OYJ,METSÄ FIBRE OY
- Current Assignee: KEMIRA OYJ,ANDRITZ OY,UPM-KYMMENE CORPORATION,STORA ENSO OYJ,METSÄ FIBRE OY
- Current Assignee Address: FI Helsinki FI Helsinki FI Helsinki FI Helsinki FI Helsinki
- Agency: Berggren Inc.
- Priority: FI20125378 20120403
- International Application: PCT/FI2013/050360 WO 20130403
- International Announcement: WO2013/150184 WO 20131010
- Main IPC: D21H17/07
- IPC: D21H17/07 ; D21H21/32 ; D21C9/12 ; D21C9/14 ; D21C9/10 ; D21H17/66 ; D21H17/00
Abstract:
A method for bleaching pulp is provided. In the method at least one tertiary amine compound is introduced into a process stage of bleaching. This process stage is a stage which comprises mixing pulp and a chlorine compound capable of bleaching.
Public/Granted literature
- US20150152600A1 Method For Bleaching Pulp Public/Granted day:2015-06-04
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