	US 12,357,727 B2
	Hydrogels and method of making the same
Anthony Lowman, Clarksboro, NJ (US); Thomas P. Schaer, Landenberg, PA (US); Peter Wilson, Killingworth, CT (US); Erik Brewer, Conshohocken, NJ (US); and Nigel Gordon Smith, North Walsham (GB)
Assigned to REGELTEC, INC., Baltimore, MD (US)
Filed by ReGelTec, Inc., Baltimore, MD (US)
Filed on Jul. 2, 2021, as Appl. No. 17/366,762.
Application 17/366,762 is a continuation of application No. PCT/US2020/012594, filed on Jan. 7, 2020.
Application PCT/US2020/012594 is a continuation in part of application No. 16/673,123, filed on Nov. 4, 2019, abandoned.
Application 16/673,123 is a continuation of application No. 16/241,510, filed on Jan. 7, 2019, granted, now 10,507,264, issued on Dec. 17, 2019.
Prior Publication US 2021/0330859 A1, Oct. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 27/26 (2006.01); A61L 27/02 (2006.01); A61L 27/52 (2006.01); C08L 29/04 (2006.01); C08L 39/06 (2006.01); C08L 71/02 (2006.01)

CPC A61L 27/26 (2013.01) [A61L 27/025 (2013.01); A61L 27/52 (2013.01); A61L 2400/06 (2013.01); A61L 2430/34 (2013.01); A61L 2430/38 (2013.01); C08L 29/04 (2013.01); C08L 39/06 (2013.01); C08L 71/02 (2013.01)]

19 Claims

1. A hydrogel, comprising:

about 12 wt. % to about 22 wt. % of polyvinyl alcohol;

about 0.12 wt. % to about 0.22 wt. % of polyvinylpyrrolidone; and

about 12 wt. % to about 22 wt. % of non-functionalized polyethylene glycol having a Mw of about 800 Da to about 2,000 Da, wherein the hydrogel does not contain a chemically crosslinked polymer.