Use of aqueous polyanion-polyethyleneimine solutions for producing polymer films with oxygen-barrier properties
US-2015086734-A1 · Mar 26, 2015 · US
Method for applying gas-impermeable coatings
US11518903B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11518903-B2 |
| Application number | US-201716338958-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 18, 2017 |
| Priority date | Oct 19, 2016 |
| Publication date | Dec 6, 2022 |
| Grant date | Dec 6, 2022 |
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- Title
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Abstract
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A method of applying a gas-impermeable coating includes forming a polyelectrolyte complex suspension. The polyelectrolyte complex suspension is applied to a substrate. The substrate having the polyelectrolyte complex applied thereon is treated. The treating reduces salt content of the polyelectrolyte complex. The treating results in a gas-impermeable coating being formed on the substrate.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of applying a gas-impermeable coating, the method comprising: forming a polyelectrolyte complex suspension comprising a strong polyanion and a weak polycation; applying the polyelectrolyte complex suspension to a substrate to form a coated substrate; and curing the coated substrate using a buffering solution having a basic pH. 2. The method of claim 1 , comprising drying the polyelectrolyte complex suspension after application to the substrate. 3. The method of claim 2 , wherein the drying improves optical clarity of the gas-impermeable coating than if the drying is omitted. 4. The method of claim 2 , wherein the drying evaporates excess water from the polyelectrolyte complex suspension. 5. The method of claim 1 , wherein the curing improves gas impermeability of the gas-impermeable coating. 6. The method of claim 1 , wherein the polyelectrolyte complex suspension has a pH of approximately 2. 7. The method of claim 1 , wherein the polyelectrolyte complex suspension comprises cationic polydiallyldimethylammonium chloride and anionic polyacrylic acid. 8. The method of claim 1 , wherein the applying comprises dipping the substrate in the polyelectrolyte complex suspension.
Assignees
Inventors
Classifications
Polyamines · CPC title
Forming gas barrier coatings · CPC title
performed by dipping · CPC title
- C09D133/02Primary
Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title
Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors · CPC title
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- What does patent US11518903B2 cover?
- A method of applying a gas-impermeable coating includes forming a polyelectrolyte complex suspension. The polyelectrolyte complex suspension is applied to a substrate. The substrate having the polyelectrolyte complex applied thereon is treated. The treating reduces salt content of the polyelectrolyte complex. The treating results in a gas-impermeable coating being formed on the substrate.
- Who is the assignee on this patent?
- Texas A & M Univ Sys, Texas A & M Univ Sys
- What technology area does this patent fall under?
- Primary CPC classification C09D133/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 06 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).