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N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and synthesis method thereof
US11629283B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11629283-B2 |
| Application number | US-201916691969-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 22, 2019 |
| Priority date | Jan 2, 2019 |
| Publication date | Apr 18, 2023 |
| Grant date | Apr 18, 2023 |
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- Title
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Abstract
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The present invention discloses a N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4′-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N′,N′-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N′,N′-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified. The surfactant of the present invention is promising in applications for alkaline/surfactant in tertiary oil recovery, for polymer/surfactant binary compound flooding, alkaline/surfactant/polymer tertiary compound flooding, microemulsion emulsifier, and the like, and may also be compounded with common surfactants to lower the cost, thereby enabling its application in a large scale.
First claim
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What is claimed is: 1. A N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant, having the structural formula:
Assignees
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Classifications
having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings · CPC title
the carbon skeleton being further substituted by singly-bound oxygen atoms · CPC title
- C09K8/604Primary
Polymeric surfactants · CPC title
by reaction with sulfuric acid or sulfur trioxide · CPC title
Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase · CPC title
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- What does patent US11629283B2 cover?
- The present invention discloses a N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4′-diaminodipheny…
- Who is the assignee on this patent?
- Petrochina Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09K8/604. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 18 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).