Compound having poly (difluoromethylene) chain, liquid crystal composition and liquid crystal display device
US-9850428-B2 · Dec 26, 2017 · US
Hydrofluoroalcohols with improved thermal and chemical stability
US8946136B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8946136-B2 |
| Application number | US-200913058297-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 7, 2009 |
| Priority date | Aug 11, 2008 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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Hydrofluoro alcohols of formula (I): A-(R f ) a —CFX—O—R h O—(CFX—(R f ) a* —CFX—O—R h O—) n H in which: R h is a hydrocarbon-based chain; X is F or a C 1 -C 6 (per)fluoroalkyl; a or a* is 0 or 1; R f is a (per)fluoro(poly)oxyalkylene chain or a (per)fluoroalkyl chain; A is selected from the group consisting of —F, —Cl, and —H (possible only when a=1) or is HO—R h —O—CFX—; n is an integer from 0 to 200, with the condition that n=0 when A is selected from the group consisting of —F, —Cl, and —H.
First claim
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The invention claimed is: 1. A hydrofluoro alcohol of formula: A-(R f ) a —CFX—O—R h O—(CFX—(R f ) a* —CFX—O—R h O—) n H (I) wherein: R h is a divalent C 1 -C 20 hydrocarbon-based residue, X is F or a C 1 -C 6 (per)fluoroalkyl, which is linear or branched where possible, optionally containing one or more heteroatoms, a and a* are equal to 1, R f is a (per)fluoro(poly)oxyalkylene (PFPE) chain comprising one or more of the following units distributed along the chai…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8946136B2 cover?
- Hydrofluoro alcohols of formula (I): A-(R f ) a —CFX—O—R h O—(CFX—(R f ) a* —CFX—O—R h O—) n H in which: R h is a hydrocarbon-based chain; X is F or a C 1 -C 6 (per)fluoroalkyl; a or a* is 0 or 1; R f is a (per)fluoro(poly)oxyalkylene chain or a (per)fluoroalkyl chain; A is selected from the group consisting of —F, —Cl, and —H (possible only when a=1) or is HO—R h —O—CFX—; n is an integer fr…
- Who is the assignee on this patent?
- Marchionni Giuseppe, De Patto Ugo, Avataneo Marco, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C07C43/137. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 03 2015 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).