US 11,939,514 B2
Self-healing water-swellable hydraulic seal
James Patrick Barnhouse, Perrysburg, OH (US); Aaron David Clark, Lambertville, MI (US); and Kelly Ann Williams, South Lyon, MI (US)
Assigned to Danfoss A/S, Nordborg (DK)
Filed by Danfoss A/S, Nordborg (DK)
Filed on Dec. 9, 2021, as Appl. No. 17/546,756.
Application 17/546,756 is a division of application No. 16/063,184, granted, now 11,230,652, previously published as PCT/US2016/066965, filed on Dec. 15, 2016.
Claims priority of provisional application 62/268,301, filed on Dec. 16, 2015.
Prior Publication US 2022/0098459 A1, Mar. 31, 2022
Int. Cl. C08L 5/00 (2006.01); C08L 9/02 (2006.01); C08L 13/00 (2006.01); C08L 15/00 (2006.01); C08L 97/02 (2006.01); C09K 3/10 (2006.01); C09K 3/12 (2006.01); C08L 5/06 (2006.01)
CPC C09K 3/1028 (2013.01) [C08L 5/00 (2013.01); C08L 9/02 (2013.01); C08L 13/00 (2013.01); C08L 15/00 (2013.01); C08L 97/02 (2013.01); C09K 3/10 (2013.01); C09K 3/12 (2013.01); C08L 5/06 (2013.01); C08L 2201/08 (2013.01); C08L 2205/06 (2013.01); C08L 2205/16 (2013.01); C09K 2003/104 (2013.01); C09K 2003/1053 (2013.01); C09K 2200/0612 (2013.01); C09K 2200/0692 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A water-swellable elastomeric composition comprising
(i) 100 pph of a base polymer comprising an acrylonitrile butadiene rubber (NBR);
(ii) 10-100 pph of a fibrous non-starch plant-based polysaccharide selected from the group consisting of apple fiber, beet fiber, carrot fiber, coir fiber (coconut husk), flax fiber (herbaceous plant), grapefruit fiber, orange fiber, palm fiber, parsnip fiber, rice paper plant fiber (Tetrapanax papyriferus), squash fiber, turnip fiber, and yam fiber, and mixtures and blends thereof;
(iii) 5-20 pph of a diffusion promoter;
(iv) 5-20 pph of a fluid retaining agent; and
(v) 5-50 pph of a silica reinforcing filler.