Invention Grant
- Patent Title: Absorbent article comprising polymeric foam and intermediates
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Application No.: US14394109Application Date: 2013-04-05
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Publication No.: US10357588B2Publication Date: 2019-07-23
- Inventor: Delton R. Thompson, Jr. , Robert L. Rowan
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Carolyn A. Fischer
- International Application: PCT/US2013/035390 WO 20130405
- International Announcement: WO2013/180832 WO 20131205
- Main IPC: A61F13/15
- 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.
Public/Granted literature
- US20150080823A1 ABSORBENT ARTICLE COMPRISING POLYMERIC FOAM AND INTERMEDIATES Public/Granted day:2015-03-19
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