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公开(公告)号：US20200017760A1
公开(公告)日：2020-01-16
申请号：US16496305
申请日：2018-03-21
Applicant: Dow Global Technologies LLC , DOW SILICONES CORPORATION
Inventor： Sachit Goyal , Arjun Raghuraman , Kaoru Aou , Juan Carlos Medina , Lenin Petroff , James Young, JR.
IPC: C09K8/80 , C09D175/08
Abstract: 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.
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公开(公告)号：US20180201825A1
公开(公告)日：2018-07-19
申请号：US15740237
申请日：2016-06-23
Applicant: Dow Global Technologies LLC
Inventor： Arjun Raghuraman , Alexander Williamson , Sachit Goyal , Runyu Tan , Juan Carlos Medina , Kaoru Aou
CPC classification number: C09K8/54 , C09K8/805 , C09K2208/20
Abstract: A coated proppant includes a solid core proppant particle, and a sulfide recovery coating that includes a sulfide capturing agent embedded within a polymer resin matrix. The sulfide capturing agent is a metal oxide.
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公开(公告)号：US20180072941A1
公开(公告)日：2018-03-15
申请号：US15561673
申请日：2016-03-22
Applicant: Dow Global Technologies LLC
Inventor： Sachit Goyal , Kaoru Aou , Juan Carlos Medina , Arjun Raghuraman , Armin Hassanzadeh
IPC: C09K8/80
CPC classification number: C09K8/805 , E21B43/267
Abstract: 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.
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