US 12,173,180 B2
Polyaspartic coating composition, coating film, and coated article
Satoshi Takeno, Tokyo (JP)
Assigned to ASAHI KASEI KABUSHIKI KAISHA, Tokyo (JP)
Filed by ASAHI KASEI KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 26, 2023, as Appl. No. 18/226,361.
Application 18/226,361 is a division of application No. 16/491,027, granted, now 11,753,563, previously published as PCT/JP2018/007802, filed on Mar. 1, 2018.
Claims priority of application No. 2017-043141 (JP), filed on Mar. 7, 2017; and application No. 2017-169741 (JP), filed on Sep. 4, 2017.
Prior Publication US 2023/0365835 A1, Nov. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 177/04 (2006.01); B05D 7/00 (2006.01); B05D 7/24 (2006.01); B32B 27/18 (2006.01); B32B 27/40 (2006.01); C08G 18/02 (2006.01); C08G 18/09 (2006.01); C08G 18/10 (2006.01); C08G 18/32 (2006.01); C08G 18/42 (2006.01); C08G 18/73 (2006.01); C08G 18/78 (2006.01); C08G 18/79 (2006.01); C09D 5/08 (2006.01); C09D 175/04 (2006.01); C09D 175/06 (2006.01)
CPC C09D 177/04 (2013.01) [B05D 7/00 (2013.01); B05D 7/24 (2013.01); B32B 27/18 (2013.01); B32B 27/40 (2013.01); C08G 18/022 (2013.01); C08G 18/092 (2013.01); C08G 18/10 (2013.01); C08G 18/32 (2013.01); C08G 18/4277 (2013.01); C08G 18/73 (2013.01); C08G 18/7837 (2013.01); C08G 18/79 (2013.01); C08G 18/792 (2013.01); C09D 5/08 (2013.01); C09D 175/04 (2013.01); C09D 175/06 (2013.01); Y02E 10/72 (2013.01)] 10 Claims
 
1. A polyaspartic coating composition, comprising:
(A) an aspartic acid ester compound represented by the following formula (I)

OG Complex Work Unit Chemistry
wherein X is an n-valent organic group obtained by removing a primary amino group of an n-valent polyamine, and R1 and R2 are the same or different organic groups which are inert to the isocyanate group under a reaction condition, and n is an integer of 2 or more, and
(B) a polyisocyanate component obtained by reacting one or two or more diisocyanate monomers selected from the group consisting of an aliphatic and alicyclic diisocyanate with a polyol containing a polycaprolactone polyol having a number-average molecular weight of 500 to 1,500, wherein
a ratio of the polycaprolactone polyol to a total amount of the polyol is 20% by mass or more, and
the polyisocyanate component (B) contains more than 0% to 10.0% by mass of an isocyanurate trimer with respect to a total amount of the polyisocyanate component (B), and
an average number of isocyanate groups of the polyisocyanate component (B) is 2.4 to 8.0.