Water treatment membrane production method, water treatment membrane produced using same, and water treatment module comprising water treatement membrane
US-2018178170-A1 · Jun 28, 2018 · US
Composition for interfacial polymerization of polyamide and manufacturing method for water treatment separation membrane using same
US11718712B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11718712-B2 |
| Application number | US-201916756652-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2019 |
| Priority date | Jun 20, 2018 |
| Publication date | Aug 8, 2023 |
| Grant date | Aug 8, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a composition for interfacial polymerizing polyamide including an amine compound; and one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound of Chemical Formula 1: wherein, in Chemical Formula 1: X is N or NH; Y is O or OH; Z is O, OH or NH 2 ; R1 and R2 are each hydrogen or a substituted or unsubstituted alkyl group; and is a single bond or a double bond, and a method for manufacturing a water-treatment membrane and a water-treatment membrane using the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition for interfacial polymerizing polyamide comprising: an amine compound; and one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound, wherein the purine-based compound is one or more selected from among purine, adenine, guanine, hypoxanthine, xanthine, theobromine, caffeine, uric acid and isoguanine, wherein the pyrimidine-based compound is one or more selected from among uracil, cytosine and thymine, wherein the purine-based compound is present in an amount from 0.001 wt % to 1 wt % based on 100 wt % of the composition, wherein the pyrimidine-based compound is present in an amount from 0.001 wt % to 1 wt % based on 100 wt % of the composition; and wherein, when the composition is contacted with an organic solution containing an acyl halide, an interfacial polymerization forms a polyamide active layer. 2. The composition of claim 1 comprising the purine-based compound and the pyrimidine-based compound, wherein a total amount of the purine-based compound and the pyrimidine-based compound is from 0.01 wt % to 0.2 wt % based on 100 wt % of the composition. 3. The composition of claim 1 , wherein the amine compound is present in an amount from 0.1 wt % to 20 wt % based on 100 wt % of the composition. 4. The composition claim 1 , further comprising a surfactant, wherein the surfactant is present in an amount from 0.01 wt % to 1 wt % based on 100 wt % of the composition.
Assignees
Inventors
Classifications
by interfacial polymerisation · CPC title
Woven, non-woven or net mesh · CPC title
- C08G69/04Primary
Preparatory processes · CPC title
Reverse osmosis; Hyperfiltration · CPC title
by chemical reactions (in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11718712B2 cover?
- Provided is a composition for interfacial polymerizing polyamide including an amine compound; and one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound of Chemical Formula 1: wherein, in Chemical Formula 1: …
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08G69/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 08 2023 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).