Poly-benzimidazole with pyrene and anthracene flourophore
US-2016369057-A1 · Dec 22, 2016 · US
Dibenzylated polybenzimidazole based polymer and method for preparing the same
US9509008B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9509008-B2 |
| Application number | US-201514627945-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 20, 2015 |
| Priority date | Apr 23, 2014 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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Abstract
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A polybenzimidazole based polymer in which substituted or non-substituted benzyl groups are introduced to the two nitrogen atoms of benzimidazole ring. The benzimidazole ring is not decomposed by the attack of hydroxide ions but shows excellent alkali resistance, and thus maintains high ion conductivity. The polybenzimidazole based polymers are particularly useful for not only solid alkali exchange membrane fuel cells (SAEMFC) but also various industrial fields in which polybenzimidazole based polymers are used.
First claim
Opening claim text (preview).
What is claimed is: 1. A dibenzylated polybenzimidazole based polymer comprising dibenzylated benzimidazolium in which substituted or non-substituted benzyl groups are bound to each of the two nitrogen atoms of benzimidazole ring of a polybenzimidazole based polymer, wherein the dibenzylated polybenzimidazole based polymer is poly(dibenzylated benzimidazolium) hydroxide in which hydroxide is bound to dibenzylated benzimidazolium; and wherein the poly(dibenzylated benzimidazolium) hydroxide is a compound represented by the following Chemical Formula 7: wherein Ar is R independently represents H, alkyl group, NO 2 , NH 3 , OH or SO 3 H, the alkyl group is methyl, ethyl, propyl, butyl or tert-butyl group, and n is the number of repeating units. 2. The dibenzylated polybenzimidazole based polymer according to claim 1 , wherein the benzyl group is substituted with an alkyl group, NO 2 , NH 3 , OH or SO 3 H, and the alkyl group is methyl, ethyl, propyl, butyl or tert-butyl group. 3. An electrolyte membrane comprising the poly(dibenzylated benzimidazolium) hydroxide as defined in claim 1 . 4. A solid alkali exchange membrane fuel cell comprising the electrolyte membrane as defined in claim 3 .
Assignees
Inventors
Classifications
Cross-Sectional Technologies · mapped topic
- C08G73/18Primary
Polybenzimidazoles · CPC title
Films, membranes or diaphragms · CPC title
- H01M8/103Primary
having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh] · CPC title
by chemical reactions, e.g. in situ polymerisation or in situ crosslinking · CPC title
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- What does patent US9509008B2 cover?
- A polybenzimidazole based polymer in which substituted or non-substituted benzyl groups are introduced to the two nitrogen atoms of benzimidazole ring. The benzimidazole ring is not decomposed by the attack of hydroxide ions but shows excellent alkali resistance, and thus maintains high ion conductivity. The polybenzimidazole based polymers are particularly useful for not only solid alkali exch…
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification C08G73/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 29 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).