Invention Grant
- Patent Title: Use of sodium dithionite in pulping
- Patent Title (中): 在制浆中使用连二亚硫酸钠
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Application No.: US14103905Application Date: 2013-12-12
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Publication No.: US09121135B2Publication Date: 2015-09-01
- Inventor: Stefan Erren , Dieter Schönhaber , Martin Schachtl
- Applicant: BASF SE
- Applicant Address: DE
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE
- Agency: Drinker Biddle & Reath LLP
- Main IPC: D21C3/02
- IPC: D21C3/02 ; D21C3/06 ; D21C3/04 ; D21C3/22
Abstract:
A method of producing cellulose from lignocellulosic material by sulfite digestion or sulfate digestion in the presence of a salt of dithionous acid comprises using the salt of dithionous acid in an amount from 0.1 to 4.0 wt. % based on the amount of oven-dry lignocellulosic material.
Public/Granted literature
- US20140158315A1 USE OF SODIUM DITHIONITE IN PULPING Public/Granted day:2014-06-12
Information query
