Colloidal barrier materials and methods of making and using the same
US10736276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2019 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Jul 11, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Some variations provide an emulsion-colloid system for forming a colloidal barrier material disposed on a substrate, the system comprising a hydrophilic first liquid, an acid, a gelling agent, a hydrophobic second liquid, a plasticizer, and optionally additives, wherein the emulsion-colloid system is characterized by (1) a first instance that is a flowable emulsion above 60° C. and less than the boiling point of the first liquid, and (2) a second instance that is a colloid below 40° C. The emulsion-colloid system is capable of reversible transition, mediated by temperature, between the first instance and the second instance. The disclosed colloidal barrier material provides the functionality of plastic alternatives while removing disadvantages. The disclosed colloidal barrier material reduces labor-intensive application of the barrier, such as the case for covering grain piles with plastic tarps. The disclosed colloidal barrier material also eliminates the need for removal when barrier protection is no longer required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.