US 12,187,885 B2
Waterborne coating compositions
Mohsen Soleimani Kheibari, Wyandotte, MI (US)
Assigned to BASF SE, (DE)
Appl. No. 17/295,341
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Nov. 18, 2019, PCT No. PCT/US2019/061989
§ 371(c)(1), (2) Date May 19, 2021,
PCT Pub. No. WO2020/106613, PCT Pub. Date May 28, 2020.
Claims priority of provisional application 62/769,633, filed on Nov. 20, 2018.
Prior Publication US 2021/0388195 A1, Dec. 16, 2021
Int. Cl. C08L 33/08 (2006.01); C08F 2/22 (2006.01); C08F 212/08 (2006.01); C08F 220/06 (2006.01); C08F 220/14 (2006.01); C08F 220/18 (2006.01); C08F 220/28 (2006.01); C08F 220/56 (2006.01); C08G 59/22 (2006.01); C08G 59/24 (2006.01); C08K 3/22 (2006.01); C08K 5/00 (2006.01); C08K 5/17 (2006.01); C09D 5/02 (2006.01); C09D 133/08 (2006.01)
CPC C08L 33/08 (2013.01) [C08F 2/22 (2013.01); C08F 212/08 (2013.01); C08F 220/06 (2013.01); C08F 220/14 (2013.01); C08F 220/1804 (2020.02); C08F 220/1808 (2020.02); C08F 220/283 (2020.02); C08F 220/56 (2013.01); C08G 59/223 (2013.01); C08G 59/226 (2013.01); C08G 59/245 (2013.01); C08K 3/22 (2013.01); C08K 5/0025 (2013.01); C08K 5/17 (2013.01); C08L 2201/52 (2013.01); C08L 2201/54 (2013.01); C08L 2205/025 (2013.01); C09D 5/02 (2013.01); C09D 133/08 (2013.01)] 14 Claims
 
1. A dispersion comprising:
a polymer being a hyperbranched polymer and having latent crosslinking functionality, which comprises the reaction product of:
a partially neutralized, acid-functional resin; and
an epoxy; and
optionally, a crosslinking agent;
wherein:
the partially neutralized, acid-functional resin comprises the reaction product of a mixture of:
a first acid-functional monomer with a base and a second acid-functional monomer; or
both a first acid functional monomer and a second acid-functional monomer with a base;
the first acid-functional monomer is not the same as the second acid-functional monomer;
at least one of the acid functional monomer comprises a further functional group capable of Schiff-Base crosslinking after film formation; and
the dispersion is a single pack waterborne polymer dispersion.