Patents Represented by Attorney Leach, Michael

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  • Cellulosic nonwoven products of enhanced water and/or solvent resistance by pretreatment of the cellulosic fibers
    Patent number: 4859527
    Abstract: In a method for bonding a nonwoven web of cellulosic fibers by depositing a polymeric binder on the web, the improvement comprising(1) pretreating the cellulosic fibers by depositing up to about 10 wt % of an adhesion-promoting compound which demonstrates adhesion to cellulosic fibers of at least 200 g as measured by a cellophane laminate test, and(2) depositing on the pretreated cellulosic fibers and amount of an overcoat binder polymer sufficient to provide a bonded self-sustaining web.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: August 22, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Frank V. DiStefano