GB191413696A - - Google Patents

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Publication number
GB191413696A
GB191413696A GB191413696DA GB191413696A GB 191413696 A GB191413696 A GB 191413696A GB 191413696D A GB191413696D A GB 191413696DA GB 191413696 A GB191413696 A GB 191413696A
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GB
United Kingdom
Prior art keywords
cellulose
acetates
chloroform
acetone
anhydride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chimique des Usines du Rhone
Original Assignee
Chimique des Usines du Rhone
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chimique des Usines du Rhone filed Critical Chimique des Usines du Rhone
Application granted granted Critical
Publication of GB191413696A publication Critical patent/GB191413696A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

13,696. Soc. Chimique des Usines du Rh¶ne anciennement Gilliard, P. Monnet, et Cartier. June 25, 1913, [Convention date]. Carboxylates; hydrocellulose.-In the production of cellulose esters of fatty acids, the cellulose is subjected to a preliminary treatment with small quantities of acetic anhydride in the presence of a catalyzer diluted with glacial acetic acid. For example, cellulose is warmed with a mixture of glacial acetic acid, sulphuric' acid, and about one-sixth of the acetic anhydride required foiacetylation. After a suitable time, the remainder of the anhydride is added, and the acetylation conducted as usual. The acetate obtained is characterized by insolubility in nitrobenzene, acetone, or ether, slight solubility in alcohol, and ready solubility in chloroform. The acetates may be partly saponified in solution, giving acetates soluble in acetone, plastic in chloroform, ethyl acetate and tetrachlorethane.
GB191413696D 1913-06-25 1914-06-05 Expired GB191413696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191413696X 1913-06-25

Publications (1)

Publication Number Publication Date
GB191413696A true GB191413696A (en) 1915-04-22

Family

ID=32604963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191413696D Expired GB191413696A (en) 1913-06-25 1914-06-05

Country Status (1)

Country Link
GB (1) GB191413696A (en)

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