D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 11/04 (2006.01) C04B 18/24 (2006.01) D21C 9/00 (2006.01) D21C 9/02 (2006.01)
Patent
CA 2449851
A pulp product that has a low COD is comprised of an unbleached pulp that is soaked and washed in alkaline water for a sufficient time so that the COD after soaking and washing is less than or equal to 2.0 kg/1000 kg of dry pulp. The pulp is produced by repetitively soaking and washing an unbleached pulp in alkaline water that is never allowed to drop below pH 7Ø The pulp is soaked and washed for a total of at least 220 minutes at an elevated temperature to produce the pulp product that has a low COD.
Bickell David W.
Dennis Brian E.
Lau Peter K.
Reimer Julie A.
Vrbanac Michael D.
Bickell David W.
Dennis Brian E.
Lau Peter K.
Smart & Biggar
Weyerhaeuser Company
LandOfFree
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