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Hydrotalcite having sodium content limited to ultra-low volume, method for preparing same, and synthetic resin composition containing same

A technology for synthetic resins and manufacturing methods, applied in the directions of hydrotalcite, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as low performance, low productivity, increased manufacturing cost, etc., and achieve thermal degradation resistance Excellent, low manufacturing cost, effect of suppressing scrap

Active Publication Date: 2013-05-15
丹石产业株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The large amount of sewage and by-products generated in this way will lead to problems such as low productivity, increased manufacturing costs, and environmental degradation.
In order to solve this problem, a technical method using a crystalline metal hydroxide as a starting material has been mentioned (see Patent Documents 1 and 2, etc.), but this method is due to its low reactivity and crystalline hydrogen The particle shape and particle size of the oxide cause the problem of performance degradation, so to solve this problem, a water-soluble compound is added or an additive for adjusting pH is used, etc.

Method used

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  • Hydrotalcite having sodium content limited to ultra-low volume, method for preparing same, and synthetic resin composition containing same
  • Hydrotalcite having sodium content limited to ultra-low volume, method for preparing same, and synthetic resin composition containing same
  • Hydrotalcite having sodium content limited to ultra-low volume, method for preparing same, and synthetic resin composition containing same

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Embodiment ）

[0045] Hereinafter, the present invention will be described in more detail by way of examples and comparative examples. Each raw material used in the comparative example, that is, in addition, magnesium sulfate heptahydrate, sodium hydroxide, sodium carbonate also use high purity, that is, use the hydrotalcite of the embodiment of the present invention that the purity is 99.9% or more compared.

Embodiment 1）

[0047] 2L of distilled water was poured into the 3L raw material tank 1, and 0.903mol of magnesium oxide and 0.42mol of aluminum hydroxide were slowly dispersed. Use a wet mill (wet mill, Netzsch bead mill, zirconia ball 0.1mm, SUS304) to pulverize the mixed aqueous solution A at 3000 rpm for 60 minutes, so that the secondary particle size of the pulverized mixed aqueous solution becomes D50 0.75 μm / D100 1μm. Pour 2L of pulverized mixed aqueous solution B into a 3L reaction tank, and after sealing it, quantitatively measure 0.21mol of CO in a high-pressure vessel 2 Finally, inject into the reaction tank containing the reactant in stirring until the pressure becomes 0kg / cm 2 . CO injected 2 The subsequent mixed aqueous solution C was subjected to hydrothermal synthesis at 170° C. for 6 hours. After that, the cooled slurry was transferred to a 3L surface treatment tank, and the temperature was raised to 80°C and maintained. After stirring, 3 g of stearic acid was added, and ...

Embodiment 2）

[0059] 2L of distilled water was poured into 3L of raw material tank 1, and 0.861mol of magnesium oxide and 0.42mol of aluminum hydroxide were slowly dispersed. The mixed aqueous solution A was pulverized at 3000 rpm for 60 minutes with a wet mill so that the secondary particle diameter of the pulverized mixed aqueous solution was D50 0.75 μm / D1001 μm. Pour 2L of pulverized mixed aqueous solution B into the reaction tank, and after sealing, quantitatively measure 0.21mol of CO in the high-pressure vessel 2 After that, inject 2.1 mol of CO into the reaction tank containing the stirred reactant 2 until the pressure becomes 0kg / cm 2 . CO injected 2 The subsequent mixed aqueous solution C was subjected to hydrothermal synthesis at 170° C. for 6 hours. Afterwards, the cooled slurry was transferred to a 3L surface treatment tank, and the temperature was raised to 80°C and maintained. After stirring, 20 g of stearic acid was added, and the surface treatment was completed by stirr...

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Abstract

Disclosed is hydrotalcite having properties and sodium content limited to ultra-low volume, a method for preparing same, and a synthetic resin composition hydrotalcite containing same. (1) In the general formula [M(II)y M(II)z]1-x(Al)x(OH)2(CO3)2- (x) / n mH2O, M(II) represents Mg2+, Zn2+, Ca2+, Li2+, which are divalent metal ions, M(III) represents Al3+, which is a trivalent metal ion, A represents an anion (CO3 2-), and x, y, z, and m represent the values that satisfy the following conditions: 0.2=x<0.4, y+z=1, 0.7=y=1, 0=z=0.3, 0=m<1; (2) The hydrotalcite particles have an average secondary particle diameter of 0.5~2? when measured using laser diffraction scattering method. (3) The sodium content in the hydrotalcite particles is less than 80 weight ppm.; (4) The hydrotalcite particles contain iron compound and manganese compound at a total volume of less than 0.005 weight% when converted into metals (Fe+Mn). (5) When measured using BET method, the hydrotalcite particles have a specific surface area of 5~40 ? / g, or more desirably 5~20 ? / g.

Description

technical field [0001] The present invention relates to hydrotalcite particles whose sodium content is controlled to an extremely small amount, a method for producing the same, a resin composition containing the same, and a molded body. More specifically, it relates to good thermal deterioration resistance during thermoforming of synthetic resins, and has properties such as high dispersibility, non-agglomeration, and high impact strength for resins, especially a new type that does not contain sodium ions. Hydrotalcite, its production method, and resin composition and molded body containing the hydrotalcite. Background technique [0002] Conventionally, hydrotalcites have been used for a long time in order to prevent thermal deterioration caused by halogen compounds contained in: Ziegler-type polymerization using compounds containing halogens as catalyst and / or carrier components olefin polymers or copolymers produced using catalysts; or, resins or mixed resins produced usin...

Claims

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Application Information

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IPC IPC(8): C08K3/26C01F7/54C08L101/00C01F7/785
CPCC01P2006/12C01P2004/64C01P2004/52B82Y30/00C01F7/005C01F7/785
Inventor 林炳吉文民镐
Owner 丹石产业株式会社
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