Method for producing paper pulp, lignins, sugars and acetic...

Details Method for producing paper pulp, lignins, sugars and acetic... Method for producing paper pulp, lignins, sugars and acetic...

1999-05-06

2008-07-22

Halpern, Mark (Department: 1791)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

C162S019000, C162S060000, C162S056000, C162S065000, C162S037000, C162S078000, C162S241000, C162S250000

Reexamination Certificate

active

07402224

ABSTRACT:
A method for producing paper pulp from a lignocellulosie vegetable raw material. The method includes contacting the raw material with a mixture of formic acid and acetic acid (in an amount more than 5 wt. % of the mixture) at a temperature and for a suitable reaction time, the whole being performed at room temperature. The paper pulp is separated from the organic phase and optionally bleached with ozone. The organic phase is treated to enable the recycling of the formic and acetic acids and the extraction of lignins, sugars and excess acetic acid.

REFERENCES:
patent: 6139683 (2000-10-01), Nimz et al.
patent: 38 30 993 (1989-04-01), None
patent: 195 16 151 (1996-11-01), None
patent: 0 584 675 (1994-03-01), None
patent: 2 770 543 (1999-05-01), None
patent: WO 95/21960 (1995-08-01), None

Affiliated with

Also associated with

Rating

Method for producing paper pulp, lignins, sugars and acetic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing paper pulp, lignins, sugars and acetic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing paper pulp, lignins, sugars and acetic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3964141