Patent ID: 9512562
Filing Date: 2016-12-06
CPC Classification: A61F,D21C,D21H,Y10T

Claim Text:
1. An absorbent device comprising: kraft pulp fiber bleached according to a multi-stage bleaching process, wherein at least one stage of the bleaching process comprises oxidizing the kraft pulp fiber with at least one peroxide and at least one catalyst under acidic conditions, wherein the at least one oxidizing stage is followed by at least one bleaching stage, wherein the ISO brightness of the kraft pulp fiber at the end of the multi-stage bleaching process comprising the at least one oxidizing stage is at least about 88, wherein the kraft pulp fiber exhibits a hemicellulose content from about 16% to about 25%, an aldehyde content ranging from about 1 meq/100 g to about 9 meq/100 g, and a carboxyl content of at least about 3 meq/100 g, and wherein the kraft pulp fiber does not comprise an optical brightening agent.