Addition of THP or THP+ salt to pulping liquors to destroy...

Details Addition of THP or THP+ salt to pulping liquors to destroy... Addition of THP or THP+ salt to pulping liquors to destroy...

2007-05-08

2007-05-08

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

C162S072000, C162S076000, C162S161000

Reexamination Certificate

active

10181104

ABSTRACT:
Pulping liquors used in the bleaching of pulps by hydrogen peroxide, and containing catalase-producing bacteria and/or catalase enzyme are treated with tris (hydroxymethyl) phosphine or a tetrakis (hydroxymethyl) phosphonium salt to kill the bacteria and destroy the enzyme.

REFERENCES:
patent: 5607544 (1997-03-01), Salzburger et al.
patent: 5728263 (1998-03-01), Mattila et al.
patent: 5885412 (1999-03-01), Paart et al.
patent: 2002/0179262 (2002-12-01), Ney et al.
patent: 2004/0173328 (2004-09-01), Hu et al.
patent: 2004/0200588 (2004-10-01), Walker
patent: 0 385 801 (1990-09-01), None
patent: 562835 (1993-09-01), None
patent: 938 990 (1963-10-01), None
patent: 2145708 (1985-04-01), None
patent: 2182563 (1987-05-01), None
patent: 2228679 (1990-09-01), None
patent: 2 269 191 (1994-02-01), None
patent: WO 94 09360 (1994-04-01), None
patent: WO 96 14092 (1996-05-01), None
patent: 99/33345 (1999-07-01), None
patent: WO 9 33345 (1999-07-01), None

Affiliated with

Also associated with

Rating

Addition of THP or THP+ salt to pulping liquors to destroy... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Addition of THP or THP+ salt to pulping liquors to destroy..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Addition of THP or THP+ salt to pulping liquors to destroy... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3751700