US 11,987,028 B2
Moisture permeable hydrogel composite materials
Esteban Ruiz, San Brunno, CA (US); and David M. Brienza, Allison Park, PA (US)
Assigned to University of Pittsburgh—Of The Commonwealth System of Higher Education, Pittsburgh, PA (US)
Filed by UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
Filed on Aug. 31, 2020, as Appl. No. 17/008,119.
Application 17/008,119 is a continuation of application No. 15/766,591, granted, now 10,759,138, previously published as PCT/US2016/055853, filed on Oct. 6, 2016.
Claims priority of provisional application 62/238,051, filed on Oct. 6, 2015.
Prior Publication US 2021/0053312 A1, Feb. 25, 2021
Int. Cl. B32B 3/12 (2006.01); A61F 2/78 (2006.01); A61F 2/80 (2006.01); B32B 3/06 (2006.01); B32B 3/08 (2006.01); B32B 3/26 (2006.01); B32B 3/28 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 5/26 (2006.01); B32B 25/04 (2006.01); B32B 25/08 (2006.01); B32B 25/10 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/18 (2006.01); B32B 27/28 (2006.01); B32B 33/00 (2006.01)
CPC B32B 3/12 (2013.01) [A61F 2/7812 (2013.01); A61F 2/80 (2013.01); B32B 3/06 (2013.01); B32B 3/08 (2013.01); B32B 3/266 (2013.01); B32B 3/28 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B32B 5/26 (2013.01); B32B 25/04 (2013.01); B32B 25/08 (2013.01); B32B 25/10 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/18 (2013.01); B32B 27/283 (2013.01); B32B 33/00 (2013.01); A61F 2002/807 (2013.01); B32B 2250/03 (2013.01); B32B 2250/04 (2013.01); B32B 2255/00 (2013.01); B32B 2255/02 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2260/021 (2013.01); B32B 2260/048 (2013.01); B32B 2262/0261 (2013.01); B32B 2264/102 (2013.01); B32B 2266/06 (2013.01); B32B 2266/122 (2016.11); B32B 2305/022 (2013.01); B32B 2305/026 (2013.01); B32B 2305/08 (2013.01); B32B 2305/72 (2013.01); B32B 2307/30 (2013.01); B32B 2307/50 (2013.01); B32B 2307/54 (2013.01); B32B 2307/724 (2013.01); B32B 2307/726 (2013.01); B32B 2307/728 (2013.01); B32B 2307/73 (2013.01); B32B 2307/732 (2013.01); B32B 2437/00 (2013.01); B32B 2535/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A moisture permeable composite material for prosthetic liners, orthotic liners, clothing, space suits and environmental suits comprising:
an inner layer, a middle layer and an outer layer;
wherein the inner layer comprises a porous elastomer material allowing for transmission of water in liquid and/or droplet form;
wherein the middle layer comprises a dual network hydrogel containing first nanoparticles comprising a synthetic smectite clay to transfer water in liquid and/or droplet form away from the inner layer by viscous flow;
wherein the dual network hydrogel comprises a first polymer network and a second polymer network and wherein the first nanoparticles are disposed only between the polymers making up the first polymer network and the first nanoparticles do not affect how the first polymer network interacts with the second polymer network; and
wherein the outer layer comprises a porous material.