US 11,807,772 B2
Use of coating compositions for wind turbine blades
Pablo Luis Bernad, Kongens Lyngby (DK); Erik Kallesøe, Kongens Lyngby (DK); and Kushagra Mehrotra, Kongens Lyngby (DK)
Assigned to HEMPEL A/S, Kongens Lyngby (DK)
Appl. No. 17/617,951
Filed by Hempel A/S, Kongens Lyngby (DK)
PCT Filed Jun. 26, 2020, PCT No. PCT/EP2020/068019
§ 371(c)(1), (2) Date Dec. 10, 2021,
PCT Pub. No. WO2020/260578, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 19183414 (EP), filed on Jun. 28, 2019; and application No. 20151250 (EP), filed on Jan. 10, 2020.
Prior Publication US 2022/0259456 A1, Aug. 18, 2022
Int. Cl. C09D 175/12 (2006.01); C08G 18/10 (2006.01); C08G 18/50 (2006.01); C08G 18/73 (2006.01); C08G 18/79 (2006.01); C09D 5/00 (2006.01)
CPC C09D 175/12 (2013.01) [C08G 18/10 (2013.01); C08G 18/5024 (2013.01); C08G 18/73 (2013.01); C08G 18/792 (2013.01); C09D 5/002 (2013.01); F05B 2240/303 (2020.08); F05B 2280/6011 (2013.01)] 20 Claims
 
1. A wind turbine blade comprising:
an outer surface, and
at least one coating applied to one part of the outer surface the at least one coating including a first coating prepared from a coating composition comprising:
a) a base composition comprising a polyetheraspartic ester having formula (I) below

OG Complex Work Unit Chemistry
wherein each R represents a linear or branched C1-C10 alkyl residue; and
wherein X is a polyether; and
b) a curing agent.