US 12,286,664 B2
Pipe weight coating
Chris Lacarte, Toronto (CA); Staci L. Wegener, Wyandotte, MI (US); Jian Ying Zang, Toronto (CA); and Lyle Caillouette, Wyandotte, MI (US)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/606,616
Filed by BASF SE, Ludwigsahfen am Rhein (DE)
PCT Filed Apr. 30, 2020, PCT No. PCT/US2020/030593
§ 371(c)(1), (2) Date Oct. 26, 2021,
PCT Pub. No. WO2020/223424, PCT Pub. Date Nov. 5, 2020.
Claims priority of provisional application 62/840,667, filed on Apr. 30, 2019.
Prior Publication US 2022/0235244 A1, Jul. 28, 2022
Int. Cl. C09D 175/08 (2006.01); C12Q 1/06 (2006.01)
CPC C12Q 1/06 (2013.01) [C09D 175/08 (2013.01)] 20 Claims
 
1. A weight coating system, comprising:
a pipe;
a weight coating disposed around the pipe comprising an aggregate and a polyurethane binder,
wherein the polyurethane binder is a two-component composition comprising an isocyanate component and an isocyanate-reactive component, and
wherein the weight coating includes the polyurethane binder in an amount of from 1.0 to 10.0 parts by weight per 100 parts by weight of the aggregate.