NOTES ON THE CELLOBIOSE OCTACETATE

N. Senda; Y. Ueda

doi:10.2115/fiber1925.5.29

セロビオース・オクトアセテート生成に関する一、二の知見

千田信惇, 上田嘉助

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ジャーナルフリー

1929 年 5 巻 2 号 p. 29-32

DOI https://doi.org/10.2115/fiber1925.5.29

[Correction] Sen-iso Kogyo Vol.5 No.4 (1929) pp.104-104

詳細

発行日: 1929 年受付日: - J-STAGE公開日: 2008/11/27 受理日: 1929/01/23 早期公開日: - 改訂日: -
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訂正日: 2008/11/27 訂正理由: - 訂正箇所: 論文受付日訂正内容: 訂正前 : 19290123

訂正日: 2008/11/27 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : Many papers have been published on the cellobiose acetate obtained by the acetolysis of cellulose material. The present authors have tried to prepare the cellobiose acetate under various conditions.
1. In the acetolysis, it is found to be very important facts that water and alcohol soluble matter should be removed as much as possible from the gelationus substance, which is produced by pouring the acetylated product into water.
2. The effects of the duration on the production are studied, tissue paper (moisture content 5.35% and ash content 0.31%) being used as material.
Exp. A. 5g of material are treated with the mixture of 20g acetic anhydride and 5g of H₂SO₄ (sp. gr. 1.84) for the desired time.
Exp. B. The same material is treated with the mixture of 44g acetic anhydride and 6g of H₂SO₄. The following results are obtained:-
Exp. A.
Exp. B.
3. Various cellulose materials are tried and they are subjected to the acetolysis using 5g of the material. The acetolysis is carried out by treating the material with the mixture of 20g acetic anhydride and 5g H₂SO₄ for 7 days at room temperature (25°-31°).
4. Finaly, the effects of the acetic anhydride on the yield of octacetate are studied. 5g of tissue paper is treated with the mixture of 5g of H₂SO₄ and various amounts of acetic anhydride for 10 days at room temperature (18°-25°).
(p. 3.)
In conclusion, we have studied on the effects of duration and the amounts of acetic anhydride on the yield of octacetate by using various cellulose materials.

訂正日: 2008/11/27 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

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