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Iminocarboxylic acid salt-containing solid composition and production method thereof

An iminocarboxylate, solid composition technology, applied in the directions of organic cleaning compositions, inorganic/elementary cleaning compositions, chemical instruments and methods, etc., can solve problems such as no disclosure or indication of solubility and the like

Inactive Publication Date: 2007-01-31
NIPPON SHOKUBAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of these powders is not disclosed or suggested, so research is still needed on how to make powders to form powders with excellent solubility

Method used

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  • Iminocarboxylic acid salt-containing solid composition and production method thereof
  • Iminocarboxylic acid salt-containing solid composition and production method thereof
  • Iminocarboxylic acid salt-containing solid composition and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0056] 1761g epoxy succinic acid disodium salt, 1770g L-aspartic acid disodium salt and 3100g water were mixed and reacted at 90°C for 4 hours to obtain 50 mass of 3-hydroxyimine disuccinic acid tetrasodium salt (HIDS4Na) % aqueous solution. A 50% by mass aqueous solution of HIDS4Na was dried using a spray dryer (manufactured by Fujisaki Electric Co., Ltd.) to obtain a powder containing L-HIDS4Na in which the aspartic acid skeleton part represented by the aforementioned general formula (2) was L type. During the drying process, no sticky matter was found on the wall surface of the device, pipes, etc.

[0057] The content of L-HIDS4Na contained in the obtained powder was analyzed by high-speed liquid chromatography and found to be 81% by mass. Furthermore, the water content was analyzed by a differential thermal analysis device and found to be 10% by mass.

Synthetic example 2

[0059] Replace L-aspartic acid disodium salt with D-aspartic acid disodium salt, and others are reacted and dried the same as Synthetic Example 1 to obtain a powder comprising D-HIDS Na. In D-HIDS Na, the aforementioned general formula (2 ) represents the aspartic acid skeleton part is D-type.

[0060] The content of D-HIDS4Na contained in the obtained powder was analyzed by high-speed liquid chromatography and found to be 80% by mass. Furthermore, the water content was analyzed by a differential thermal analysis device and found to be 10% by mass.

Embodiment 1～3 and comparative example 1

[0062] The L-type HIDS4Na synthesized in Synthesis Example 1 is dried with a tray drier, or it absorbs moisture in a constant temperature and humidity device with a temperature of 25 ° C and a humidity of 80%, and the moisture content of the L-type HIDS4Na is as shown in Table 1. powder composition. 0.5 g of the powder composition was added to 10 g of water at 5° C. to measure the dissolution rate, which was determined by visual comparison with a reference solution. The reference solution uses an aqueous solution in which L-HIDS4Na is pre-dissolved. The time required for dissolution is based on the time when the powder composition is put in, and the solid component is dissolved under stirring. end time point.

[0063] Dissolution rate=(added powder composition (mg, milligram)) / (time required for dissolution (sec, second))

[0064] moisture content

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Abstract

To provide a solid composition as follows: exhibiting excellent stability; having advantages for transportation and storage; containing no additives; exhibiting functions such as excellent detergency, and capable of being preferably used, and a production method thereof. A solid composition comprising an iminocarboxylic acid salt, wherein the iminocarboxylic acid salt is 3-hydroxy-2,2'-iminodisuccinic acid and / or a salt thereof, the solid composition comprises 70% by weight or more of the iminocarboxylic acid salt, relative to a solid content except for moisture of the solid composition, and the solid composition comprises 20% by weight or less of moisture, relative to the solid composition, and a production method of the solid composition, comprising a step of drying an iminocarboxylic acid salt-containing composition.

Description

technical field [0001] The present invention relates to a solid composition containing imino carboxylate and its production method. More specifically, the present invention relates to a method for organic chelating agent, anti-scaling agent, water treatment agent, detergent synergist, bleaching auxiliary agent, masking agent, fiber treatment agent, paper-pulp additive, semiconductor cleaning agent Useful chelate-containing compositions such as reagents for photographs, soil conditioners, etc., and relate to various cleaning in various fields such as food industry, chemical industry and machinery industry, as well as automatic tableware for household and industrial use. Solid iminocarboxylate-containing composition useful for cleaning by washing machine and method for producing the same. Background technique [0002] Compositions containing chelates are suitable for organic chelating agents, antiscalants, water treatment agents, synergists for detergents, bleaching aids, mas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C07C229/24C09K3/00C11D17/06C11D3/02C11D3/33
CPCC07C229/24C11D3/33C07C229/16
Inventor 伊奈智美住田康隆
Owner NIPPON SHOKUBAI CO LTD
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