US 11,781,035 B2
Polyurea copolymer coating compositions and methods
Kristin Taton, Little Canada, MN (US); Daniel Guire, Hopkins, MN (US); Nathaniel Olson, Minneapolis, MN (US); Eric Guire, St. Paul, MN (US); and Patrick Guire, Hopkins, MN (US)
Assigned to Innovative Surface Technologies, Inc., St. Paul, MN (US)
Appl. No. 16/771,285
Filed by Innovative Surface Technologies, Inc., St. Paul, MN (US)
PCT Filed Dec. 11, 2018, PCT No. PCT/US2018/064983
§ 371(c)(1), (2) Date Jun. 10, 2020,
PCT Pub. No. WO2019/118483, PCT Pub. Date Jun. 20, 2019.
Claims priority of provisional application 62/703,412, filed on Jul. 25, 2018.
Claims priority of provisional application 62/597,148, filed on Dec. 11, 2017.
Prior Publication US 2020/0377756 A1, Dec. 3, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C08G 18/32 (2006.01); C09D 175/02 (2006.01); A61B 5/00 (2006.01); B05D 1/02 (2006.01); B05D 1/18 (2006.01); C08G 18/50 (2006.01); C08G 18/66 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C09D 5/16 (2006.01)
CPC C09D 175/02 (2013.01) [A61B 5/6846 (2013.01); B05D 1/02 (2013.01); B05D 1/18 (2013.01); C08G 18/325 (2013.01); C08G 18/3228 (2013.01); C08G 18/5024 (2013.01); C08G 18/6685 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C09D 5/1662 (2013.01)] 26 Claims
 
1. A coating composition for a surface of a medical device, the coating composition comprising a polyurea copolymer having a polymer backbone and comprising a reaction product of:
(a) a diamine composition comprising a polyethylene glycol diamine compound having a formula (I), (II), or a combination of (I) and (II):

OG Complex Work Unit Chemistry
wherein y is an integer in the range of 2 to 40, and x+z is an integer in the range of 1 to 8; or

OG Complex Work Unit Chemistry
wherein n is an integer in the range of 1 to 500; and
(b) a diisocyanate, wherein the diisocyanate is present in a molar ratio with total diamines in (a) in a range of 2:1 to 1:2.