公开(公告)号：US20190382598A1

公开(公告)日：2019-12-19

申请号：US16483781

申请日：2018-02-06

Applicant: BASF SE

Inventor： Rajesh Kumar ,  Nikolay Lebedinski ,  Sunitha K. Grandhee

IPC: C09D5/44 ,  C09D179/08

Abstract: An aqueous system for forming a coating on a substrate includes a polycarbodiimide having the structure: Each of R1 and R2 is independently chosen from Each n is independently a number from 1 to 20, each m is independently a number from 1 to 100, each Y is independently an alkoxy or polyalkoxy group having (w) oxygen atoms, wherein each w is independently at least 1 and each z is independently a number from 0 to (w−1). In addition, x, Y, and a total of said CnH2n+1 groups are present in a ratio of from (4 to 5):(0 to 1.5):(0 to 4.5. The aqueous system includes water and a reactive compound having at least two reactive groups independently chosen from —OH, —NHR3, —NH2, —COOH, and —SH, and combinations thereof, wherein R3 is an alkyl group or aromatic group having 1 to 20 carbon atoms.