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Antimony peroxide ethanol dispersion preparation method

A technology of antimony pentoxide and ethanol dispersion, which is applied in chemical instruments and methods, inorganic chemistry, antimony compounds, etc. It can solve the problems of product particle size increase, hiding power and flame retardancy performance decline, and achieve fine particle size , good compatibility, wide application range

Inactive Publication Date: 2005-08-17
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although the antimony pentoxide dispersion is made into dry powder, although the application range can be expanded, the particle size of the product is increased, and its hiding power and flame retardancy are reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 5.5g of N,N-dihydroxyethyl isopropanolamine and 100g of antimony trioxide to 400g of 95% ethanol, stir and heat up to 50-75°C (preferably 60-70°C), add dropwise 30% hydrogen peroxide, 1.5 hours added. The reaction was stirred for 2 hours under the same temperature conditions. Concentrate the reaction solution under normal pressure to a total weight of 240 g, add absolute ethanol dropwise, and control the rate of addition so that it is basically consistent with the rate of the distillate. When the water content of the reaction solution drops below 5.0% (or the required value), stop adding absolute ethanol, and concentrate the reaction mixture to a total weight of less than 220g to obtain a milky white product with an antimony pentoxide content greater than 50%.

Embodiment 2

[0015] The product can be obtained by substituting absolute ethanol and N-hydroxyethyl diisopropanolamine for 95% ethanol and N,N-dihydroxyethyl diisopropanolamine in Example 1, and keeping other operating conditions unchanged.

Embodiment 3

[0017] With 3.5g N-ethyldiethanolamine, 3.5g N-ethyldiisopropanolamine instead of N, N-dihydroxyethylisopropanolamine in Example 1, other operating conditions remain unchanged, the product can be obtained.

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PUM

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Abstract

The invention provides a process for preparing antimony pentoxide ethanol dispersion comprising, charging antimony trioxide and dispersion stabilizer into ethanol, oxidizing antimony trioxide into antimony pentoxide by hydrogen dioxide, preparing the outcome yield with content of antimony pentoxide over 5% through reaction solution concentration and dewatering. The dispersion stabilizer is tertiary amine formed by straight chain groups, and anhydrous alcohol is used as dewatering agent.

Description

technical field [0001] The invention belongs to the technical scope of chemical material preparation, and in particular relates to a preparation method of an antimony pentoxide ethanol dispersion which can be used as a flame-retardant additive in chemical fibers, textiles, plastics, rubber and coatings. technical background [0002] US3860523, US3994325, US4348301, US4351741, US5008036, US6040371, EP134708, CN1074945A public reports are to use different raw materials or methods to prepare antimony pentoxide dispersions with water as the medium, which can be used to allow a large amount of water to exist and the product can be dispersed therein Among strong polar solvents, the above products cannot be used in weak polar solvents that do not allow a large amount of water to exist, or where the product cannot be dispersed. The method disclosed in US5182048 is to add phosphoric acid and a suitable hydroxyethylated fatty acid ammonium to the hydrosol of antimony pentoxide, concen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00C08K3/22C09C1/00C09C3/04
Inventor 李龙土赵建玲王晓慧
Owner TSINGHUA UNIV