公开(公告)号：US20180030309A1

公开(公告)日：2018-02-01

申请号：US15551084

申请日：2016-02-10

Applicant: BASF SE

Inventor： Lyle CAILLOUETTE ,  David R. PHELPS ,  Stephen SMITH ,  Karl GUST

IPC: C09D175/12 ,  C08G18/48 ,  C08G18/32 ,  F16L58/10 ,  C08G18/50 ,  C08G18/66 ,  C09D5/08 ,  C08G18/76 ,  C08G18/36

Abstract: A system for forming an elastomeric composition for application to a substrate includes an isocyanate component and an isocyanate-reactive component. The isocyanate component includes a polymeric polyisocyanate and optionally an isocyanate-terminated prepolymer. The isocyanate-reactive component is reactive with the isocyanate component and includes a polyol component and a polyetheramine. The polyol component is a mixture of (a) a hydrophobic polyol; (b) a polyether polyol different than the hydrophobic polyol and having a weight average molecular weight greater than 500 g/mol; and (c) a polyaminopolyol. The elastomeric composition is formed as the reaction product of the isocyanate component and the isocyanate-reactive component and may be applied as an elastomeric coating layer on a substrate such as a steel pipe. The steel pipe having the applied elastomeric coating layer satisfies the standard for use in the water supply industry as set forth in AWWA C222.