公开(公告)号：US20250019321A1

公开(公告)日：2025-01-16

申请号：US18714316

申请日：2022-11-29

Applicant: Dow Global Technologies LLC

Inventor： Alex J. Kosanovich ,  Praveen Agarwal ,  Juan Carlos Medina ,  Yasmin N. Srivastava ,  Maria Jose Cotanda Santapau ,  Yi Fan

IPC: C05G5/30 ,  C05C9/00

Abstract: Embodiments of the present disclosure are directed towards coated fertilizer granule compositions that include three polyurethane layers and two wax layers.

公开(公告)号：US20220275271A1

公开(公告)日：2022-09-01

申请号：US17630811

申请日：2020-01-22

Applicant: Dow Global Technologies LLC

Inventor： Praveen Agarwal

IPC: C09K8/80 ,  C09K8/62 ,  E21B43/267

Abstract: Coated proppant particles are prepared by coating the particles with a coating composition that includes at least one polyisocyanate and at least one ingredient selected from i) an isocyanate trimerization catalyst, ii) a carbodiimide catalyst, iii) an alcohol, iv) a polyamine and v) an alkanolamine, and curing the coating composition. Starch is present during at least part of the curing step, such that the starch becomes embedded in at least a portion of the cured coating. The coating composition cures rapidly at moderate temperatures, and bonds to itself well under conditions of heat and pressure as are experienced by the particles in subterranean formations.

公开(公告)号：US20220275270A1

公开(公告)日：2022-09-01

申请号：US17630808

申请日：2020-04-30

Applicant: Dow Global Technologies LLC

Inventor： Praveen Agarwal ,  Juan Carlos Medina

IPC: C09K8/80 ,  C09K8/88

Abstract: Coated proppant particles are prepared by coating the particles with at least one polyisocyanate, and at least one urethane catalyst, and starch is present during at least part of the curing step. The starch becomes incorporated into in at least a portion of the cured coating. The coating cures rapidly at moderate temperatures, and bonds to itself well under conditions of heat and pressure as are experienced by the particles in subterranean formations.

公开(公告)号：US20170362459A1

公开(公告)日：2017-12-21

申请号：US15534094

申请日：2015-12-07

Applicant: Rohm and Haas Electronic Materials LLC ,  Dow Global Technologies LLC

Inventor： Praveen Agarwal ,  Justice Alaboson ,  Shih-Wei Chang ,  John W. Lyons ,  Kathleen M. O'Connell ,  Caroline Woelfle-Gupta ,  Weijun Zhou

IPC: C09D139/08 ,  C08K5/095 ,  C08K5/00 ,  C08K5/06 ,  G02F1/13363 ,  C09D133/12

CPC classification number: H01F1/012 ,  C08K5/0016 ,  C08K5/06 ,  C08K5/095 ,  C08K5/101 ,  C08K5/151 ,  C09D133/12 ,  C09D139/08 ,  F25B21/00 ,  F25B2321/002 ,  G02F1/13363 ,  C08L33/12 ,  C08L39/08

Abstract: A polymeric material having a negative photoelastic constant. The polymeric material comprises: (a) a polymer comprising polymerized units of 2-vinylpyridine, 4-vinylpyridine, methyl methacrylate or a combination thereof; (b) a C9-C25 aliphatic polycyclic compound; and (c) an organic compound having a boiling point of at least 200° C.