Perfluoropolyether-modified polysilazane and surface treatment agent using same

A technology of perfluoropolyether and polysilazane, used in the field of cured film articles and surface treatment agents, can solve problems such as disadvantages, and achieve the effects of excellent water and oil resistance and excellent chemical resistance.

Inactive Publication Date: 2010-01-20
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the film obtained from this organosilazane polymer contains siloxane units, which is disadvantageous in terms of surface properties such as oil repellency, stain resistance, and chemical resistance.

Method used

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  • Perfluoropolyether-modified polysilazane and surface treatment agent using same
  • Perfluoropolyether-modified polysilazane and surface treatment agent using same
  • Perfluoropolyether-modified polysilazane and surface treatment agent using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] [Example 1] (synthesis of polysilazane)

[0069] In the 300ml three-neck bottle that is provided with thermometer, reflux condenser, stirrer, add the trichlorosilane 50.6g that following formula (3) represents through perfluoropolyether modification and meta-bis(trifluoromethyl)benzene 100g Afterwards, dry ammonia gas was introduced into the solution under stirring, and while the ammonia gas was blown in, the temperature of the liquid rose, and ammonium chloride was generated and turned into a cloudy state. According to the above method, the ammonia gas was blown in until the reflux state was reached, then the introduction of the ammonia gas was stopped, and the stirring was continued for 2 hours under the reflux state. Then, heat and stir for 4 hours while introducing nitrogen to remove excess ammonia, then filter the precipitated ammonium chloride, and remove m-bis(trifluoromethyl)benzene by distillation under reduced pressure from the filtrate, thereby obtaining 46.6...

Embodiment 2

[0081] [Example 2] (synthesis of polysilazane)

[0082] In addition to using 62.4 g of perfluoropolyether-modified trichlorosilane represented by the following formula (4) instead of perfluoropolyether-modified trichlorosilane represented by formula (3) in the compound used in Example 1 , using the same method as in Example 1 to obtain 53.7 g of a colorless transparent liquid. of the compound obtained 1 H-NMR and IR spectrum data are shown below.

[0083]

[0084] 1 H-NMR (with TMS as standard substance, ppm, see image 3 )

[0085] -CH 2 C H 2 Si≡0.7~0.9

[0086] -SiN H - 0.9~1.0

[0087] =CFC H 2 CH 2 - 2.2~2.4

[0088] IR (KBr plate, liquid film method, cm -1 , see Figure 4 )

[0089] 3420(N-H), 2950-2850(C-H), 1315-1090(C-F)

[0090] From the above results, it was found that the obtained compound consisted of units represented by the following formula.

[0091]

Embodiment 3

[0092] [Example 3] (synthesis of polysilazane)

[0093] Except that the compound represented by the following formula (5) was used instead of the perfluoropolyether-modified trichlorosilane represented by the formula (3) among the compounds used in Example 1, the same method as in Example 1 was used to obtain compound.

[0094]

[0095] by it 1 According to H-NMR and IR spectrum data, the obtained compound is composed of units represented by the following formula.

[0096]

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Abstract

A perfluoropolyether-modified polysilazane is provided. The polysilazane consists of units having formula (1): F(C x F 2x O) m C y F 2y -Q-Si(NH) 1.5 ( 1 ) wherein Q represents a divalent organic group, m represents an integer of 1 or greater, and x and y each represents an integer of 1 to 3. The polysilazane can be cured at normal temperatures, forms a tough coating on a substrate surface without application of a primer, and is useful as a surface treatment agent that is capable of maintaining water and oil repellency and releasability and the like, over a long period of time.

Description

technical field [0001] The present invention relates to a novel perfluoropolyether-modified polysilazane capable of forming a cured film having excellent water and oil repellency, releasability, antifouling properties, etc., and a surface mainly composed of the polysilazane A treatment agent, and an article having a cured film of the polysilazane. Background technique [0002] Generally, a compound containing a perfluoropolyether group has water and oil repellency, chemical resistance, lubricity, mold release property, antifouling property, etc. due to its very small surface free energy. Utilizing these properties, it is commonly and widely used in waterproof, oil-proof and anti-fouling agents for paper, fibers, etc., lubricants for magnetic recording media, oil-repellent agents for precision instruments, mold release agents, cosmetics, protective films, etc. [0003] However, the existence of the above properties means that it has non-adhesive and non-adhesive properties t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/62C09D183/16C09D5/16C09D5/00
CPCC08G65/336C08G65/3255C08G77/62C09D183/16C08G77/385C08G77/54C08J5/00
Inventor 山口浩一木下博文
Owner SHIN ETSU CHEM IND CO LTD
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