公开(公告)号：US20180223111A1

公开(公告)日：2018-08-09

申请号：US15748363

申请日：2016-07-29

Applicant: BASF SE

Inventor： Rajesh KUMAR ,  Vincent GOLDMAN ,  Sunitha GRANDHEE

IPC: C09D5/08 ,  C09D175/04 ,  C09D7/61

Abstract: This disclosure provides a pigmented primer composition for forming an n-acyl urea coating on a substrate. The pigmented primer composition includes a polycarbodiimide-polyurethane hybrid. The pigmented primer composition also includes an acid functional polymer and an organic solvent, and includes less than or equal to 10 weight percent of water based on a total weight of the pigmented primer composition. The pigmented primer composition also includes a pigment, an inorganic filler, and less than about 100 parts by weight of toluene diisocyanate per one million parts by weight of the pigmented primer composition. The n-acyl urea coating exhibits corrosion resistance of 2 to 10 as determined using ASTM B117 and ASTM D-1654-08 on a substrate that is unpolished cold rolled steel, aluminum, or galvanized steel.