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    Absorbent article comprising flexible polymeric foam and intermediates
    1.
    发明授权
    Absorbent article comprising flexible polymeric foam and intermediates 有权

    公开(公告)号：US10918537B2

    公开(公告)日：2021-02-16

    申请号：US15760092

    申请日：2016-10-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Joseph D. Rule ,  Delton R. Thompson, Jr.

    IPC: A61F13/534 ,  C08G18/48 ,  C08G18/76 ,  A61L15/42 ,  A61F13/535 ,  C08G18/20 ,  C08G18/18 ,  C08L75/04 ,  A61F13/53 ,  C08G101/00

    Abstract: Absorbent articles are described comprising a first absorbent layer comprising a polymeric foam. In one embodiment, the polyurethane foam comprises the reaction product of a polymeric polyisocyanate component having an equivalent weight of no greater than 250 g/equivalent; and a polyol component. The polyol component comprises one or more polyether polyols such that the polyol component comprises an average equivalent weight ranging from 500 to 2000 g/equivalent; an ethylene oxide content ranging from 15-30 wt.-%; a secondary hydroxyl content of at least 55 wt.-% and less than 80 wt.-% of the total hydroxyl content of the polyol component; and less than 5 wt-% water. Also described are various composites comprising the polyurethane foam described herein in combination with another substrate such as a second absorbent layer, a fluid impervious backsheet, and/or a fluid pervious topsheet.

    Absorbent article comprising polymeric foam and intermediates
    4.
    发明授权
    Absorbent article comprising polymeric foam and intermediates 有权

    公开(公告)号：US10357588B2

    公开(公告)日：2019-07-23

    申请号：US14394109

    申请日：2013-04-05

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Delton R. Thompson, Jr. ,  Robert L. Rowan

    IPC: A61F13/15 ,  A61L15/24 ,  A61L15/26 ,  A61L15/42 ,  A61L15/28

    Abstract: Absorbent articles are described comprising an absorbent composite. The absorbent composite comprises a first absorbent layer comprising a polymeric foam having an average cell size of at least 100 microns. The polymeric foam has at least one property selected from a) an indentation force deflection of less than 75 N at 50%; or b) a constant deflection compression set of less than 25% for a deflection of 50%; or a combination of a) and b); and a second absorbent layer in fluid communication with the fluid transport layer. In another embodiment, the a second absorbent layer has an average absorption capacity of at least 20 g/g. In another embodiment, a polyurethane foam is described having an average cell size of at least 100 microns. The polyurethane foam comprises the reaction product of at least one polyol component having polyethylene oxide units and a polyisocyanate component that comprises at least 75 wt-% of at least one polymeric polyisocyanate that lacks urethane linkages. In some embodiments, the polyurethane foam is free of superabsorbent polymer. In some embodiments, the polyurethane foam has an average cell size up to 500 microns. In some embodiments, the polyurethane foam comprises at least 12 wt-% ethylene oxide units. Also described are various composites comprising the polyurethane foam described herein in combination with another substrate such as a second absorbent layer, a fluid impervious backsheet, and/or a fluid pervious topsheet.

    Absorbent article comprising polymeric foam and intermediates
    6.
    发明授权
    Absorbent article comprising polymeric foam and intermediates 有权

    公开(公告)号：US11351286B2

    公开(公告)日：2022-06-07

    申请号：US16402831

    申请日：2019-05-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Delton R. Thompson, Jr. ,  Robert L. Rowan

    IPC: A61F13/15 ,  A61L15/24 ,  A61L15/26 ,  A61L15/42 ,  A61L15/28

    Abstract: Absorbent articles are described comprising an absorbent composite. The absorbent composite comprises a first absorbent layer comprising a polymeric foam having an average cell size of at least 100 microns. The polymeric foam has at least one property selected from a) an indentation force deflection of less than 75 N at 50%; or b) a constant deflection compression set of less than 25% for a deflection of 50%; or a combination of a) and b); and a second absorbent layer in fluid communication with the fluid transport layer. In another embodiment, the a second absorbent layer has an average absorption capacity of at least 20 g/g. In another embodiment, a polyurethane foam is described having an average cell size of at least 100 microns. The polyurethane foam comprises the reaction product of at least one polyol component having polyethylene oxide units and a polyisocyanate component that comprises at least 75 wt-% of at least one polymeric polyisocyanate that lacks urethane linkages. In some embodiments, the polyurethane foam is free of superabsorbent polymer. In some embodiments, the polyurethane foam has an average cell size up to 500 microns. In some embodiments, the polyurethane foam comprises at least 12 wt-% ethylene oxide units. Also described are various composites comprising the polyurethane foam described herein in combination with another substrate such as a second absorbent layer, a fluid impervious backsheet, and/or a fluid pervious topsheet.

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