GB305601A - Improvements relating to the manufacture of acetyl-cellulose - Google Patents

Improvements relating to the manufacture of acetyl-cellulose

Info

Publication number
GB305601A
GB305601A GB2330427A GB2330427A GB305601A GB 305601 A GB305601 A GB 305601A GB 2330427 A GB2330427 A GB 2330427A GB 2330427 A GB2330427 A GB 2330427A GB 305601 A GB305601 A GB 305601A
Authority
GB
United Kingdom
Prior art keywords
cellulose
formic acid
per cent
manufacture
treatment
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
GB2330427A
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 GB2330427A priority Critical patent/GB305601A/en
Publication of GB305601A publication Critical patent/GB305601A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/02—Rendering cellulose suitable for esterification

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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

305,601. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 5, 1927. Cellulose formates; cellulose acetates; preparatory treatment of cellulose.-Cellulose to be used in the manufacture of cellulose acetates is subjected to a preliminary treatment with formic acid of at least 80 per cent strength until it contains not less than 4 per cent and not more than 10 per cent of formic acid chemically combined. Cotton or other cellulosic material free from lignin is suitable as the initial material and the treatment is preferably conducted in such a manner that the cellulose is treated continuously with fresh formic acid, for example by percolation, until it has attained the specified content of combined formic acid after which the product is washed, dried, and acetylated in known manner. Specification 263,128 and French Specification 565,654 are referred to.
GB2330427A 1927-09-05 1927-09-05 Improvements relating to the manufacture of acetyl-cellulose Expired GB305601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2330427A GB305601A (en) 1927-09-05 1927-09-05 Improvements relating to the manufacture of acetyl-cellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2330427A GB305601A (en) 1927-09-05 1927-09-05 Improvements relating to the manufacture of acetyl-cellulose

Publications (1)

Publication Number Publication Date
GB305601A true GB305601A (en) 1929-02-05

Family

ID=10193444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2330427A Expired GB305601A (en) 1927-09-05 1927-09-05 Improvements relating to the manufacture of acetyl-cellulose

Country Status (1)

Country Link
GB (1) GB305601A (en)

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