Aminoalkane diphosphonic acids in pulp bleaching

Details Aminoalkane diphosphonic acids in pulp bleaching Aminoalkane diphosphonic acids in pulp bleaching

D - Textiles, Paper

21

C

D21C 9/16 (2006.01) C01B 15/037 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2175062

A process for the bleaching of pulp comprising the step of bleaching the pulp with hydrogen peroxide and an effective amount of at least one biodegradable 1-aminoalkane-1, 1-diphosphonate chelating agent to enhance the bleaching of the pulp, is disclosed. Also disclosed is the use of a 1-aminoalkane-1,1-disphophonate to enhance the bleaching of pulp with hydrogen peroxide, as well as the pretreatment of pulp with a 1-aminoalkane-1,1-disphophonate prior to the step of bleaching with hydrogen peroxide. Finally, the deinking of pulp in the presence of 1-aminoalkane-1,1-diphosphonate is also disclosed.

L'invention se rapporte à un procédé destiné à blanchir la pâte à papier, comprenant l'étape consistant à blanchir la pâte à papier avec du peroxyde d'hydrogène et une quantité efficace d'au moins un agent de chélation biodégradable qui est 1-aminoalcane-1,1-diphosphonate, afin d'augmenter le blanchiment de la pâte à papier. L'invention se rapporte également à l'utilisation de 1-aminoalcane-1,1-diphosphonate pour augmenter le blanchiment de la pâte à papier au peroxyde d'hydrogène, ainsi qu'au traitement préalable de la pâte à papier avec 1-aminoalcane-1,1-diphosphonate avant l'étape de blanchiment au peroxyde d'hydrogène. Finalement, l'invention concerne le désencrage de la pâte à papier en présence de 1-aminoalcane-1,1-diphosphonate.

Affiliated with

Also associated with

Rating

Aminoalkane diphosphonic acids in pulp bleaching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aminoalkane diphosphonic acids in pulp bleaching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aminoalkane diphosphonic acids in pulp bleaching will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1345950