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Polyether modified silicon oil with ultra-low surface tension and synthesis process thereof

A technology of polyether modified silicone oil and surface tension, which is applied in the fields of compounds of group 4/14 elements in the periodic table, organic chemistry, chemical instruments and methods, etc. problems, achieve the effect of reducing surface tension, avoiding complex separation, and mild reaction conditions

Active Publication Date: 2009-05-20
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It is also difficult to obtain a polyether modified silicone oil lower than 22mN / m by independently screening the m value of methyl hydrogen-containing silicone oil and the n value of allyl polyether
In our research, we found that the m value of methyl hydrogen-containing silicone oil and the n value of allyl polyether have obvious effects on the surface tension of polyether modified silicone oil, but there is no obvious rule. The m value of methyl hydrogen-containing silicone oil value, the optimal n value of allyl polyether can only be determined by doing experiments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, the synthetic technique of polyether modified silicone oil:

[0022] Add catalyst H to allyl polyether heated to 100-120°C 2 PtCl 6 ; Catalyst H 2 PtCl 6 Calculated by Pt, add in the ratio of 1-10ppm of the weight of methyl hydrogen-containing silicone oil; pass nitrogen gas, gradually add methyl hydrogen-containing silicone oil to allyl polyether; react at 110-180°C for 1-10 hours; Then distill under reduced pressure to remove low volatile substances; obtain polyether modified silicone oil.

[0023] Among them: the structural formula of allyl polyether is CH 2 =CHCH 2 O[C 2 h 4 O] n H, n=1-7.

[0024] Among them: the structural formula of methyl hydrogen silicone oil is (CH 3 ) 3 SiO[(CH 3 )HSiO] m Si(CH 3 ) 3 , m=1-10.

[0025] The surface tension of the obtained polyether modified silicone oil is mostly distributed in the range of 22-25mN / m.

Embodiment 2

[0026] Embodiment 2, the synthetic technique of a group of polyether modified silicone oils:

[0027] Add catalyst H to allyl polyether heated to 110°C 2 PtCl 6 ; Catalyst H 2 PtCl 6 Calculated based on Pt, add in the ratio of 10ppm of the weight of methyl hydrogen-containing silicone oil; pass nitrogen gas, gradually add methyl hydrogen-containing silicone oil to allyl polyether; react at 110°C for 3 hours; then distill under reduced pressure, remove Remove low volatile substances; obtain polyether modified silicone oil.

[0028] Among them: the structural formula of allyl polyether is CH 2 =CHCH 2 O[C 2 h 4 O] n H.

[0029] Among them: the structural formula of methyl hydrogen silicone oil is (CH 3 ) 3 SiO[(CH 3 )HSiO] m Si(CH 3 ) 3 .

[0030] Investigate the influence of n value and m value change on surface tension:

[0031] n value of allyl polyether m value of methyl hydrogen silicone oil Surface Tension n＝2 m＝5 23.3mN / m n＝3 m＝8 ...

Embodiment 3

[0034] Embodiment 3, the synthetic technique of a group of polyether modified silicone oils:

[0035] Add catalyst H to allyl polyether heated to 110°C 2 PtCl 6 ; Catalyst H 2 PtCl 6 Calculated based on Pt, add at a ratio of 8ppm of the weight of the methyl hydrogen-containing silicone oil; after the catalyst is activated, add it to the reaction system, pass in nitrogen, and gradually add the methyl hydrogen-containing silicone oil to the allyl polyether; at 110°C React for 3 hours; then distill under reduced pressure to remove low volatile substances; obtain polyether modified silicone oil.

[0036] Among them: the structural formula of allyl polyether is CH 2 =CHCH 2 O[C 2 h 4 O] n H, n=2.

[0037] Among them: the structural formula of methyl hydrogen silicone oil is (CH 3 ) 3 SiO[(CH 3 )HSiO] m Si(CH 3 ) 3 , m=5.

[0038] Among them: catalyst activation treatment is H 2 PtCl 6 After pretreatment with an organic solvent containing furan functional groups an...

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Abstract

The invention relates to polyether modified silicone oil and a synthetic process thereof, in particular to the polyether modified silicone oil with extremely low surface tension, and a synthetic process thereof. In the preparation of the polyether modified silicone oil with extremely low surface tension, an activation technique is adopted to treat an activator H2PtCl6 and the surface tension of the polyether modified silicone oil prepared by reaction between allyl polyether and methyl hydric silicone oil is 20mN / m to 22mN / m. Due to the preeminent wetting property, the polyether modified silicone oil with the surface tension lower than 22mN / m and prepared by the synthetic technique provided by the invention can be applied as an additive in the fields such as pesticide, cosmetics and the like. The polyether modified silicone oil and the synthetic process thereof do not adopt solvents including toluene and has milder reaction condition and simple reaction process. Due to no adoption of a toluene solvent, the complex segregation between a finished product and the solvent is avoided, which is conducive to reducing the surface tension.

Description

technical field [0001] The invention relates to a polyether modified silicone oil and a synthesis process thereof, in particular to a polyether modified silicone oil with ultra-low surface tension and a synthesis process thereof. Background technique [0002] The polyether-modified silicone oil obtained by the reaction of methyl hydrogen-containing silicone oil through allyl polyether is common, and the surface tension of various polyether-modified silicone oils obtained is mostly distributed in the range of 23-26mN / m. The polyether-modified silicone oil with a surface tension lower than 22mN / m can be used as an excellent additive in the fields of pesticides and cosmetics because of its excellent wettability, and the polyether-modified silicone oil with a surface tension lower than 22mN / m is considered to be ultra-low Surface tension, and it is difficult to obtain polyether modified silicone oil with surface tension lower than 22mN / m. silicone oil. [0003] "Preparation of...

Claims

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Application Information

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IPC IPC(8): C07F7/18C08G77/46
Inventor 廖桂根章淑娥陈卫东肖赣湘贺志江
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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