GB281927A - Manufactures of esters of the cellulose series - Google Patents

Manufactures of esters of the cellulose series

Info

Publication number
GB281927A
GB281927A GB1049927A GB1049927A GB281927A GB 281927 A GB281927 A GB 281927A GB 1049927 A GB1049927 A GB 1049927A GB 1049927 A GB1049927 A GB 1049927A GB 281927 A GB281927 A GB 281927A
Authority
GB
United Kingdom
Prior art keywords
cellulose
sulphuric acid
per cent
proportion
esterification
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
GB1049927A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB1049927A priority Critical patent/GB281927A/en
Publication of GB281927A publication Critical patent/GB281927A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00Preparation of cellulose esters of organic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

281,927. Imray, O. Y., (I, G. Farbenindustrie Akt.-Ges.). April 19, 1927. Cellulose acetates and other carboxylates; preparatory treatment of cellulose. - Cellulose acetatates and other cellulose esters are prepared by treating cellulose with a small proportion of sulphuric acid in the presence of a diluent preferably acetic acid or other aliphatic acid, then adding acetic anhydride or other esterifying- agent so as partly to esterify the cellulose, and finally adding a further proportion of sulphuric acid with or without a further quantity of acetic anhydride &c. in order to complete the esterification. The initial material may be cellulose, for example, in the form of cotton or wood pulp, or hydrocellulose, oxycellulose, or feebly nitrated cellulose; and it is advisable to disintegrate the material before treatment. It is important that the proportion of sulphuric acid used in the first stage of the esterification should not exceed 2 per cent calculated on the cellulose; in examples, 0.5-1 per cent of sulphuric acid is employed, a further 4-5 per cent being added to complete the acetylation.
GB1049927A 1927-04-19 1927-04-19 Manufactures of esters of the cellulose series Expired GB281927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1049927A GB281927A (en) 1927-04-19 1927-04-19 Manufactures of esters of the cellulose series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1049927A GB281927A (en) 1927-04-19 1927-04-19 Manufactures of esters of the cellulose series

Publications (1)

Publication Number Publication Date
GB281927A true GB281927A (en) 1927-12-15

Family

ID=9968966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1049927A Expired GB281927A (en) 1927-04-19 1927-04-19 Manufactures of esters of the cellulose series

Country Status (1)

Country Link
GB (1) GB281927A (en)

Similar Documents

Publication Publication Date Title
GB281927A (en) Manufactures of esters of the cellulose series
US1936976A (en) Cellulose ester
GB303493A (en) Process for the preparation of sulphuric esters of cellulose
GB381991A (en) Improvements relating to the production of cellulose triacetate
US2017171A (en) Preparation of moisture resistant thread
GB491583A (en) Process for the production of cellulose esters
GB471894A (en) Improvements in the manufacture of mixed esters of cellulose
US1984126A (en) Preparation of acetone-soluble cellulose nitro-acylate
GB399508A (en) Improvements in cellulosic materials
GB535949A (en) An improved process for the manufacture of acetic esters of starch
GB348292A (en) Improved process for the manufacture of cellulose acetates
GB263938A (en) Improvements in or relating to the treatment of cellulosic materials and the production of cellulose derivatives
GB301036A (en)
GB345235A (en) Improvements in process of making cellulose acetate
GB411930A (en) Treatment of cellulose fibres and fabrics
GB305601A (en) Improvements relating to the manufacture of acetyl-cellulose
GB489110A (en) Improvements in or relating to the manufacture of cellulose esters of aliphatic acids
GB521884A (en) Improvements in or relating to the manufacture of cellulose esters
GB341147A (en)
GB265267A (en) A process for the manufacture of cellulose acetate
Miyosi STUDIES ON SOYBEAN PROTEIN FIBERS 7 DENATURATION OF SOYBEAN PROTEINS BY ETHYL ACETATE
GB303135A (en) Improvements in the esterification of cellulose
GB397638A (en) Improvements in esterification of cellulose
GB840319A (en) Cellulose esters
GB540147A (en) Improvements in cellulose esters