Functionalized diacetylene monomers, their polymerization and uses thereof
US-2026042729-A1 · Feb 12, 2026 · US
Polydifluoroacetylene, method for producing polydifluoroacetylene, precursor polymer, molded article and powder
US11279778B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11279778-B2 |
| Application number | US-201816645230-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 27, 2018 |
| Priority date | Sep 12, 2017 |
| Publication date | Mar 22, 2022 |
| Grant date | Mar 22, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A polydifluoroacetylene containing a C═C bond and a C—F bond, the polydifluoroacetylene having a solubility of 0.2 g/10 g or less in dimethylformamide (DMF) at 25° C. Also disclosed is a method for producing the polydifluoroacetylene, a precursor polymer for providing the polydifluoroacetylene, a molded article including the polydifluoroacetylene and a polydifluoroacetylene powder.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polydifluoroacetylene comprising a C═C bond and a C—F bond, the polydifluoroacetylene having a soluble amount of 0.2 g/10 g or less in dimethylformamide (DMF) at 25° C. and a degree of fluorination of 0.95 or higher as determined by ATR analysis. 2. The polydifluoroacetylene according to claim 1 , wherein the polydifluoroacetylene has a decomposition percentage of 1.0% or lower by 2-hour heating at 100° C. in an air atmosphere. 3. A molded article comprising the polydifluoroacetylene according to claim 1 . 4. A powder comprising the polydifluoroacetylene according to claim 1 . 5. The polydifluoroacetylene according to claim 1 , wherein the polydifluoroacetylene has a weight average molecular weight of 50000 to 1000000. 6. The polydifluoroacetylene according to claim 1 , wherein the polydifluoroacetylene has a weight average molecular weight of 70000 to 800000. 7. The polydifluoroacetylene according to claim 1 , wherein the polydifluoroacetylene has a weight average molecular weight of 100000 to 600000.
Assignees
Inventors
Classifications
- C08F138/02Primary
Acetylene · CPC title
Monomers containing fluorine · CPC title
- C08F8/26Primary
Removing halogen atoms or halogen-containing groups from the molecule · CPC title
Homopolymers and copolymers of compounds having one or more carbon-to-carbon triple bonds · CPC title
- C08F38/02Primary
Acetylene · CPC title
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- What does patent US11279778B2 cover?
- A polydifluoroacetylene containing a C═C bond and a C—F bond, the polydifluoroacetylene having a solubility of 0.2 g/10 g or less in dimethylformamide (DMF) at 25° C. Also disclosed is a method for producing the polydifluoroacetylene, a precursor polymer for providing the polydifluoroacetylene, a molded article including the polydifluoroacetylene and a polydifluoroacetylene powder.
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F138/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 22 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).