Dow Global Technolgoies LLC

Dow Silicones Corporation

Sachit Goyal

Arjun Raghuraman

Juan Carlos Medina

Lenin J Petroff

Nanguo Liu

Kaoru Aou

Phillip S Athey

William Aaron Koonce

Yang Cheng

Scott D Boelter

H Robert Goltz

Zhenbin Niu

Yasmin N Srivastava

Harshad M Shah

Qiuyun Xu

Fabio Aguirre Vargas

Simon Toth

Avery L Watkins

Travis Sunderland

James W Young, Jr

Adam C Colson

Armin Hassanzadeh

Fang Zhang

David A Reuschle

Ann F Johnson

Weston Tulloch

Adebola Ogunniyi

Amber M Stephenson

A coated article comprises an article, and one or more amide based coatings on an outer surface of the proppant particle, the amide based coating include the reaction product of an isocyanate component that includes at least one isocyanate and a carboxylic acid component that includes one or more poly-carboxylic acids.

Amide based coating

A coated article, such as a proppant, includes a base substrate and one or more polyurethane based coatings on an outer surface of the base substrate. The one or more polyurethane based coatings including the reaction product of an isocyanate component that has at least one isocyanate and an isocyanate-reactive component that has one or more simple polyols and one or more polyether monols at a ratio from 1:18 to 18:1. An isocyanate index is greater than 0.2 and less than 1.0.

Polyurethane based proppant coatings

A coated proppant includes a solid core proppant particle and a heavy metal recovery coating, including heavy metal recovery crystals embedded within a polymer resin matrix. A process for the manufacture of a coated proppant includes providing a solid core proppant particle, and forming on the solid core proppant particle, a heavy metal recovery coating including heavy metal recovery crystals embedded within a polymer resin matrix.

Proppant coating for heavy metal recovery

A coated proppant includes a solid core proppant particle, a first resin coating, and a second coating on the first resin coating. The second coating includes the reaction product of one or more curatives and one or more preformed aliphatic or cycloaliphatic based isocyanurate tri-isocyanates, derived from aliphatic diisocyanates, cycloaliphatic diisocyanates, or a combination of aliphatic and cycloaliphatic diisocyanates.

Proppant coating having preformed isocyanurate

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Sachit Goyal