反応 #8947

反応方程式

L-lysine methyl ester dihydrochloride

disodium phosphate 12 hydrate

polyoxyethylene lauryl ether

→

L-lysine

溶媒

water

sodium hydroxide

反応条件

後処理

1. 1
   その他to prepare a treating agent solution
2. 2
   workup.ADDITIONtreated
3. 3
   洗浄washed with water
4. 4
   その他dried
5. 5
   その他to uniformly absorb the total amount of the above treating agent solution
6. 6
   その他air-dried for 3 hours at room temperature
7. 7
   workup.ADDITIONThe dried cloth was heat-treated for 20 minutes at 140° C. in a batch type hot air oven (“IPHH-2000”, an inert oven manufactured by Tabaiesbeck Co., Ltd.)
8. 8
   洗浄washed with water
9. 9
   洗浄It was further washed with 5% aqueous sodium bicarbonate solution
10. 10
    洗浄rinsed three times with water
11. 11
    洗浄subsequently washed with 10% aqueous citric acid solution
12. 12
    洗浄rinsed three times with water
13. 13
    洗浄finally washed with household
14. 14
    洗浄washing detergent solution
15. 15
    洗浄rinsed with water
16. 16
    その他air-dried
17. 17
    workup.WAITFurthermore, 0.5 g of the cloth was immersed in 10 ml of pure water for an hour at room temperature
18. 18
    洗浄was not eluted

実験手順

4.66 Grams (20 mmol) of L-lysine methyl ester dihydrochloride, 2.22 g (6.2 mmol) of disodium phosphate 12 hydrate and 0.2 g of polyoxyethylene lauryl ether (“Newcol 1100”, nonionic surfactant produced by Nippon Nyukazai Co., Ltd.) were dissolved in 10.0 ml of water to prepare a treating agent solution. A cotton cloth (200 mm×200 mm, 7.5 g) was in advance treated to be immersed in 25% aqueous sodium hydroxide solution for an hour at room temperature, washed with water and dried. This treated cotton cloth_was allowed to uniformly absorb the total amount of the above treating agent solution and then air-dried for 3 hours at room temperature. The dried cloth was heat-treated for 20 minutes at 140° C. in a batch type hot air oven (“IPHH-2000”, an inert oven manufactured by Tabaiesbeck Co., Ltd.) and washed with water. It was further washed with 5% aqueous sodium bicarbonate solution and rinsed three times with water and subsequently washed with 10% aqueous citric acid solution and rinsed three times with water, and finally washed with household washing detergent solution, rinsed with water and air-dried. The identification of the formed L-lysine cellulose ester was conducted by the following method. A part of the cloth was cut and a solution of ninhydrin in butanol was sprayed on it. Thereafter, it was heated for 10 minutes in an oven of 110° C. to cause coloring thereby the presence of the amino acid was confirmed. Also, a part of the cloth was cut and subjected to an infrared spectroscopic analysis whereby there was confirmed a peak based on ester bond at 1720–1740 cm−1. Furthermore, 0.5 g of the cloth was immersed in 10 ml of pure water for an hour at room temperature and then the immersed water was analyzed by HPLC whereby it was confirmed that free L-lysine methyl ester was not eluted. As a result of determination for the amount of the L-lysine bonded, it was 0.17 mmol per g of the cloth. The degree of esterfication was 0.028. Also, the amount of citric acid was 0.15 mmol.

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