Patent ID: 7670459
Filing Date: 2010-03-02
Classification: A61L,D21H

Abstract:
1. A fibrous product comprising: at least one fibrous web containing cellulosic fibers, at least a portion of the cellulosic fibers having been pretreated with a softening agent comprising a polysiloxane containing a plurality of first functional groups; the first functional groups contained on the polysiloxane comprise epoxy groups, an hydride groups, aldehyde groups, carboxylic groups, epihalohydrin groups, or mixtures thereof; and a retention agent contained in the fibrous web, the retention agent comprising a polymer containing a plurality of a second functional group, the second functional group comprising an amine group, an amide group, an anhydride group, an aldehyde group, an epoxy group, epihalohydrin group, or mixtures thereof, the retention agent being present in an amount sufficient to increase the retention of the polysiloxane on the cellulosic fibers under aqueous conditions as compared to a pretreated fibrous product without a retention agent; wherein the retention agent is reacted with the softening agent causing the softening agent to crosslink, the reaction facilitated by the addition of a catalyst.