The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2021
Filed:
Dec. 15, 2015
Dow Quimica DE Colombia S.a., Bogota, CO;
Pbbpolisur S.r.l., Buenos Aires, AR;
Dow Global Technologies Llc, Midland, MI (US);
Maximiliano Zanetti, Bahia Blanca, AR;
Miguel Molano Niampira, Bogota, CO;
Jorge C. Gomes, Sao Paulo, BR;
Dow Global Technologies LLC, Midland, MI (US);
PBBPolisur S.R.L., Buenos Aires, AR;
Dow Quimica de Colombia S.A., Bogota, CO;
Abstract
Embodiments disclosed herein include multilayer films that have at least two layers. More particularly, disclosed in embodiments herein are multilayer films that include at least a first layer and a second layer, wherein the first layer includes at least one polyethylene polymer, wherein the second layer includes at least one water-soluble polymer, wherein the second layer is insoluble in water at a temperature of less than 20° C., wherein the second layer is soluble in water at a temperature of 20° C. or greater, and wherein the first layer has one or more openings through the first layer to expose the second layer. Also disclosed herein are methods of using such multilayer films for extracting metal from metal ore.