Neutral deinking with a deinking composition comprising a...

Details Neutral deinking with a deinking composition comprising a... Neutral deinking with a deinking composition comprising a...

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21C 5/00 (2006.01)

Patent

CA 2434304

The present invention relates to methods for deinking wastepaper by pulping wastepaper at a pH between 4 and 8.5 in the presence of deinking agents comprising a lipase and a fatty acid ester and removing the thereby dislodged ink particles.

La présente invention concerne un procédé de désencrage de vieux papiers impliquant leur réduction en pulpe à un pH se situant entre 4 et 8,5 en présence d'agents de désencrage comprenant une lipase et un ester d'acide gras puis l'élimination des particules d'encre qui ont été ainsi extraites.

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