Additive composition for reducing anthraquinone requirements in

Compositions – Water-softening or purifying or scale-inhibiting agents

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

162 72, 162 75, 162 76, 162DIG3, 510421, 252351, D21C 320

Patent

active

058716637

ABSTRACT:
An improved process for delignification of lignocellulosic raw material, such as wood chips, for the production of cellulose pulps for use in the manufacture of paper or paperboard and an improved pulping aid composition for use in said process are disclosed wherein the wood chips are treated in a closed reaction vessel with an alkaline pulping liquor with an amount of a cyclic keto compound, such as anthraquinone, included therein for achievement of a determined pulp yield, wherein the improvement comprises a reduction in the amount of anthraquinone required to achieve said yield by the addition to said alkaline pulping liquor, in addition to a reduced amount of the anthraquinone, a surfactant mixture comprising at least one alkyl alcohol alkoxylate and at least one polyoxyalkylene glycol ether of an ester of an acid selected from the group consisting of ricinoleic acid and 12-hydroxystearic acid.

REFERENCES:
patent: 5032224 (1991-07-01), Ahluwalia
patent: 5298120 (1994-03-01), Blackstone

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Additive composition for reducing anthraquinone requirements in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Additive composition for reducing anthraquinone requirements in , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Additive composition for reducing anthraquinone requirements in will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2059307

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.