Fluorine-containing organosilicone monomer and preparation method thereof

A technology of organosilicon and monomers, which is applied in the direction of organic chemistry, chemical instruments and methods, compounds of group 4/14 elements of the periodic table, etc., can solve the problem that short fluoroalkyl groups do not have crystallinity and cannot be arranged in liquid crystal structure, short fluorine Problems such as application limitation of alkylation materials, reduction of water and oil repellency performance, etc., to achieve the effect of environmentally friendly surface activity, high fluorine content, and low surface tension
CN104829641AActive Publication Date: 2015-08-12JIANGSU HUAJIA SILK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HUAJIA SILK
Publication Date
2015-08-12

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Abstract

The invention discloses a fluorine-containing organosilicone monomer and a preparation method thereof. The method is characterized in that the method comprises the steps that 3-tridecafluorohexyl propylene and tridecafluoro-1-iodohexane are taken as starting materials, and undergo a single electron transfer addition reaction to synthesize 1,3-bi-(tridecafluorohexyl)-2-iodopropane; 1,3-bi-(tridecafluorohexyl)-2-iodopropane reacts with magnesium metal to prepare 1,3-bi-(tridecafluorohexyl)-2-propyl magnesium iodide which further reacts with silicon tetrachloride to form fluorine-containing alkyl-substituted chlorosilane; and a bi-[1,3-bi-(tridecafluorohexyl) isopropyl] dichloro-silicohydride product is obtained by recification. In a molecular structure of the product, perfluoroalkyl is short-chain perfluoroalkyl; the length of a carbon chain is equal to 6; the product is not degraded difficultly, has no cumulative toxicity, and is an environment-friendly monomer for synthesizing fluorine-containing polysiloxane. The preparation and reaction conditions of the fluorine-containing organosilicone monomer are mild; a technique is simple and convenient; the raw materials are easy to obtain; and industrialized production, and popularization and application are facilitated.
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Description

technical field

[0001] The invention relates to the preparation of organic compounds, in particular to a fluorine-containing organosilicon monomer and a preparation method thereof, belonging to the field of fluorine materials and fine chemicals. Background technique

[0002] Fluorine atoms have small radius, high electronegativity, and low C-F bond polarizability, so the cohesion between polymer molecules containing carbon-fluorine bonds is small, and the surface energy of the polymer is very low, which endows its surface with water, oil, etc. Liquids are difficult to wet and adhere. The surface tension of the existing hydrophobic and oil-resistant polymers containing carbon-fluorine bonds is generally 20mN / m. It is generally considered that liquids with surface tensions lower than 20mN / m are high-surface active liquids. At present, the most widely used fluoropolymers are fluorine-containing polyacrylate and fluorine-containing polysiloxane. Most of these two fluoropolymers ...

Claims

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