Fluorosilicon nitrile compounds
US-2018370995-A1 · Dec 27, 2018 · US
Preparation of fluorosilicon compounds
US10590150B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10590150-B2 |
| Application number | US-201816057886-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 8, 2018 |
| Priority date | Aug 27, 2014 |
| Publication date | Mar 17, 2020 |
| Grant date | Mar 17, 2020 |
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Abstract
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Methods of synthesizing fluorosilanes containing cyano-substituted alkyl groups are provided. For example, 3-cyanopropyldimethylfluorosilane may be produced by reacting tetramethyldisiloxane and boron trifluoride to obtain fluorodimethylsilane and then reacting the fluorodimethylsilane with allyl cyanide, in the presence of a hydrosilylation catalyst.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of making 3-cyanopropyldimethylfluorosilane comprising a step of reacting bis(3-cyanopropyl)tetramethyldisiloxane and boron trifluoride in an inert solvent capable of forming an azeotrope with water. 2. The method of claim 1 , wherein the boron trifluoride is in the form of an etherate complex. 3. The method of claim 1 , wherein the boron trifluoride and the bis(cyanopropyl)tetramethyldisiloxane are reacted at a temperature of from about 60° C. to about 100° C. 4. The method of claim 1 , wherein the boron trifluoride and the bis(cyanopropyl)tetramethyldisiloxane are reacted at a molar ratio of from about 0.3:1 to about 1:1. 5. The method of claim 1 , wherein a reaction product containing 3-cyanopropyldimethylfluorosilane, inert solvent and water is obtained and the reaction product is subjected to distillation wherein water is removed by azeotropic distillation. 6. The method of claim 1 , wherein the inert solvent is an aromatic hydrocarbon. 7. The method of claim 6 , wherein the inert solvent is toluene.
Assignees
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Classifications
by reactions involving both Si-C and Si-halogen linkages, the Si-C and Si-halogen linkages can be to the same or to different Si atoms, e.g. redistribution reactions · CPC title
by reactions involving the formation of Si-halogen linkages · CPC title
- C07F7/14Primary
Preparation thereof from {optionally substituted} halogenated silanes and hydrocarbons {hydrosilylation reactions} · CPC title
Organo silicon halides · CPC title
by reactions involving the formation of Si-C linkages (hydrosilylation reactions C07F7/14; direct synthesis C07F7/16) · CPC title
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- What does patent US10590150B2 cover?
- Methods of synthesizing fluorosilanes containing cyano-substituted alkyl groups are provided. For example, 3-cyanopropyldimethylfluorosilane may be produced by reacting tetramethyldisiloxane and boron trifluoride to obtain fluorodimethylsilane and then reacting the fluorodimethylsilane with allyl cyanide, in the presence of a hydrosilylation catalyst.
- Who is the assignee on this patent?
- Arkema Inc
- What technology area does this patent fall under?
- Primary CPC classification C07F7/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 17 2020 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).