US 12,233,182 B2
Instant underwater bio-adhesive containing catechol moieties and water-resistant cholesterol
Dong-An Wang, Kowloon (HK); Chao Tao, Zibo (CN); and Min Jin, Anqing (CN)
Assigned to City University of Hong Kong, Kowloon (HK)
Filed by City University of Hong Kong, Kowloon (HK)
Filed on Oct. 3, 2022, as Appl. No. 17/959,091.
Prior Publication US 2024/0108782 A1, Apr. 4, 2024
Int. Cl. A61L 24/08 (2006.01)
CPC A61L 24/08 (2013.01) [A61L 2300/232 (2013.01)] 18 Claims
 
1. A bio-adhesive comprising a polyanionic polymer and a polycationic polymer functionalized with a hydrophobic moiety, wherein the functionalized polycationic polymer comprises a polycationic polymer having a hydrophobic moiety, wherein the bio-adhesive comprises:
from 15 to 60% by weight, based on a total weight of the bio-adhesive, of the functionalized polycationic polymer;
from 40 to 85% by weight, based on a total weight of the bio-adhesive, of the polyanionic polymer; or
from 15 to 60% by weight, based on a total weight of the bio-adhesive, of the functionalized polycationic polymer and from 40 to 85% by weight, based on a total weight of the bio-adhesive, of the polyanionic polymer.