	US 12,077,654 B2
	Hydrophobic nanocellulose-coated paper and paperboard
Kimberly Nelson, Atlanta, GA (US); and Theodora Retsina, Atlanta, GA (US)
Assigned to GranBio Intellectual Property Holdings, LLC, Thomaston, GA (US)
Filed by GranBio Intellectual Property Holdings, LLC, Minnetrista, MN (US)
Filed on Sep. 10, 2019, as Appl. No. 16/565,663.
Application 16/034,822 is a division of application No. 14/748,120, filed on Jun. 23, 2015, abandoned.
Application 16/565,663 is a continuation in part of application No. 16/034,822, filed on Jul. 13, 2018, abandoned.
Claims priority of provisional application 62/728,904, filed on Sep. 10, 2018.
Claims priority of provisional application 62/016,372, filed on Jun. 24, 2014.
Prior Publication US 2020/0140658 A1, May 7, 2020
Int. Cl. C08L 1/02 (2006.01); C08B 37/00 (2006.01); C08H 8/00 (2010.01); C08J 9/00 (2006.01); C08J 9/36 (2006.01); C09D 101/02 (2006.01); C09D 197/00 (2006.01); D21C 3/04 (2006.01); D21C 9/00 (2006.01); D21C 11/00 (2006.01); D21H 11/08 (2006.01); D21H 19/34 (2006.01)

CPC C08L 1/02 (2013.01) [C08B 37/0057 (2013.01); C08H 8/00 (2013.01); C08J 9/0061 (2013.01); C08J 9/365 (2013.01); C09D 101/02 (2013.01); C09D 197/005 (2013.01); D21C 3/04 (2013.01); D21C 9/007 (2013.01); D21C 11/0007 (2013.01); D21H 11/08 (2013.01); D21H 19/34 (2013.01); C08J 2301/02 (2013.01); C08J 2497/00 (2013.01); Y02P 40/40 (2015.11); Y10T 428/2933 (2015.01); Y10T 428/2991 (2015.01); Y10T 442/20 (2015.04)]

6 Claims

1. An oil-resistant paperboard material, wherein said paperboard material is at least partially coated with a porous coating comprising hydrophobic nanocellulose, wherein said paperboard material is essentially free of a fluorocarbon coating, wherein said porous coating includes a first amount of lignin containing a first degree of sulfonation and a second amount of lignin containing a second degree of sulfonation, wherein said first degree of sulfonation is lower than said second degree of sulfonation, wherein said first degree of sulfonation is selected from 0 to 0.3 sulfur atoms per C₉lignin group, wherein said second degree of sulfonation is selected from 0.1 to 0.5 sulfur atoms per C₉lignin group, wherein said first amount of lignin is present at an external surface of said porous coating, and wherein said second amount of lignin is contained within internal pores of said porous coating.