No. 24 Studies on the Industrial Production of Monochlorotriazinyl-β-cyclodextrin and its Fixation to Textile Fibers

Outline

An economical, high cost is needed in the removal process of the sodium chloride salt of the sub-reaction product caused when MCT-β-CD is manufactured.
This influences prices of manufactured goods and a big obstruction of industrial usage development.

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MCT-β-CD･NaCl that omits the removal process of the sodium chloride salt is developed.
(The sodium chloride salt of about 22% is contained.)

It had comparative study of commercially available MCT-β-CD, stability, and the reactivity. It reports on the details.

MCT-β-CD・NaCl

Monochlorotriazino beta cyclodextrin
Product name : CAVASOL W7 MCT

MCT-β-CD・NaCl Low-cost One-Pot synthesis

As for three chloro parts (Cl) of the cyanuric chloride, the place that separates by the temperature is different.
It reacted sequentially by using this character, and MCT-β-CD･NaCl that left one Cl of the MCT group was synthesized.
Cl that remains in the MCT group covalently-immobilizes OH group of the cotton carrier fiber.

Safety of commercially available MCT-β-CD

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As for MCT-β-CD･NaCl, similar safety is seen.

MCT-β-CD・NaCl quality and generic property

MCT-β-CD・NaCl Fixation method to cotton carrier fiber

MCT-β-CD・NaCl Fixation rate evaluation to cotton carrier fiber

MCT-β-CD・NaCl pH change after one year manufacturing

MCT-β-CD・NaCl A change with the lapse of time of pH of high humidity

MCT-β-CD・NaCl Clinging rate evaluation by each pH

consideration

• As for the fixation rate to a cotton carrier fiber that was MCT-β-CD･NaCl and commercially available MCT-β-CD it, it was an equal.
• HCl separates when MCT-β-CD･NaCl is preserved in "There are neither a temperature nor a humidity control".
  It is thought that the resolution is promoted by this and the pH decreases.
  When the pH is low, the a fixation rate to the cotton carrier fiber falls.
  It is thought that this shows the degradation level of the quality.
• The examination that adds the additive (ex. sodium bicarbonate) is scheduled to be done as a method of improving the storage stability of MCT-β-CD･NaCl.