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Novel perfluoropolyether-based silane compound and surface composition thereof

A technology of perfluoropolyether silane and perfluoropolyether, which is applied in the field of new perfluoropolyether-based silane compounds and their surface compositions, can solve the problem of limited application range and space, high baking temperature and baking temperature of surface compositions. baking time etc.

Active Publication Date: 2017-08-01
龙岩思康新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its surface composition requires higher baking temperature and baking time, which limits the scope and space of application

Method used

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  • Novel perfluoropolyether-based silane compound and surface composition thereof
  • Novel perfluoropolyether-based silane compound and surface composition thereof
  • Novel perfluoropolyether-based silane compound and surface composition thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0065] Example 1 Synthesis of novel perfluoropolyether-based compound key intermediates (perfluoropolyether-based alkenes)

[0066] Step1 Ammonolysis reaction: Preparing perfluoropolyether-based amides from acyl fluoride ethers

[0067] Under nitrogen protection, in the 5.0L three-neck flask equipped with dropping funnel, reflux condenser and thermometer, charge 800g1,3-bis(trifluoromethyl)benzene and 800g tetrahydrofuran, then 1600g (0.2mol) by Chemical formula F-(CF 2 CF 2 O) j (CF 2 O) k -CF 2 -COF means ether fluoride compound (average molecular weight: 4000) was added under nitrogen protection, and the temperature was lowered to below -20°C, ammonia gas was slowly introduced for about 1 hour (about 34g), and it was raised to room temperature for 4 hours. Low boilers were removed under reduced pressure and the fluorine phase was washed 2 x 200 g methanol. The fluorine phase was vacuum-dried by an oil pump for 2 hours to obtain 1520g (96% yield) of perfluoropolyether...

Embodiment 2

[0075] Embodiment 2 Novel perfluoropolyether-based silane preparation (A)

[0076] Into a 1L airtight autoclave, add 200g (0.046mol) F-(CF 2 CF 2 O) j (CF 2 O) k -CF 2 -CH 2 N(CH 2 CH=CH 2 ) 2 compound, 200 g perfluorooctane, triacetoxymethylsilane, l,3-divinyl 1,1,3,3-tetramethyldisiloxane complexed Pt gold catalyst and 16.8 g trimethoxy Silane (0.14mol), reacted at 100°C for 6 hours, evaporated the solvent in a dry environment to obtain 200g of liquid, and used 1 H NMR spectral analysis, showing the corresponding CH 2 =CHCH 2 The peak of the hydrogen atom on the O double bond functional group disappears completely, confirming that the F-(CF 2 CF 2 O) j (CF 2 O) k -CF 2 -CH 2 N(CH 2 CH 2 CH 2 Si(OCH 3 ) 3 ) 2 (A) Generated.

[0077] The product compound (A) synthesized above was dissolved in Novec HFE 7200 hydrofluoroether (manufactured by 3M Company) to prepare a product with a solid content of 20% for sale.

Embodiment 3

[0078] Embodiment 3 Novel perfluoropolyether-based silane preparation (B)

[0079] With the method of embodiment 2, use triethoxysilane to replace trimethoxysilane, make 200g F-(CF 2 CF 2 O) j (CF 2 O) k -CF 2 -CH 2 N(CH 2 CH 2 CH 2 Si(OCH 2 CH 3 ) 3 ) 2 (B). And use Novec HFE 7200 hydrofluoroether (manufactured by 3M company) to dissolve and prepare the product with 20% solid content for sale.

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Abstract

The invention relates to a novel perfluoropolyether-based silane compound and a surface composition thereof. The compound contains a C-N single-bond end group, and is provided with a silane-containing double chain, so that superior stain resistance, oil repellency, scratch resistance and durability can be provided, and the transparency of raw materials is kept at the same time. The structure of the perfluoropolyether-based silane compound is shown as Rf-((C2F4O)j(CF2O)kCF2CH2N-((CH2)mCH2CH2SiX3)2)t.

Description

technical field [0001] The invention relates to a fluorine-containing silane compound and surface treatment technology, in particular to a novel perfluoropolyether-based silane compound and its surface composition. Background technique [0002] Fluorine-containing silane compounds can provide excellent water repellency, oil repellency, and antifouling properties when used for surface treatment of substrates. The surface treatment layer obtained by the surface treatment agent of fluorine-containing silane compound is used as a so-called functional film for various substrates such as glass, plastics, fibers, building materials, etc. Core materials in next-generation technologies including optoelectronics, semiconductors, automobiles, and computer industries attract worldwide attention. [0003] As such a fluorine-containing silane compound, a perfluoropolyether group-containing silane compound having a perfluoropolyether group in the main chain of the molecule and a hydrolyza...

Claims

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Application Information

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IPC IPC(8): C08G65/338C09D171/02C09D5/16G02B1/18
CPCC08G65/338C08G2650/04C08G2650/48C09D5/1662C09D171/02G02B1/18
Inventor 程思聪李勇杰
Owner 龙岩思康新材料有限公司
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