GB267569A - A process for depolymerising acetyl cellulose - Google Patents

A process for depolymerising acetyl cellulose

Info

Publication number
GB267569A
GB267569A GB7199/27A GB719927A GB267569A GB 267569 A GB267569 A GB 267569A GB 7199/27 A GB7199/27 A GB 7199/27A GB 719927 A GB719927 A GB 719927A GB 267569 A GB267569 A GB 267569A
Authority
GB
United Kingdom
Prior art keywords
depolymerising
depolymerized
acetyl cellulose
products
pringsheim
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
GB7199/27A
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.)
HANS PRINGSHEIM
Original Assignee
HANS PRINGSHEIM
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 HANS PRINGSHEIM filed Critical HANS PRINGSHEIM
Publication of GB267569A publication Critical patent/GB267569A/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
    • C08B3/00—Preparation of cellulose esters of organic acids
    • C08B3/22—Post-esterification treatments, including purification
    • C08B3/24—Hydrolysis or ripening

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

Abstract

267,569. Pringsheim, H. March 15, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Cellulose acetates of high molecular weight are depolymerized, without hydrolysis, by heating, suitably in inert liquids such as naphthalene or its hydrogenized derivatives. In an example, the acetate, as prepared by acetylation with the use of sulphuric acid as a catalyst, is heated in tetrahydronaphthalene at 208‹ C. The depolymerized products show improved solubility, while the viscosity characteristics of the products are lowered.
GB7199/27A 1926-03-15 1927-03-15 A process for depolymerising acetyl cellulose Expired GB267569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE267569X 1926-03-15

Publications (1)

Publication Number Publication Date
GB267569A true GB267569A (en) 1927-09-22

Family

ID=5997588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7199/27A Expired GB267569A (en) 1926-03-15 1927-03-15 A process for depolymerising acetyl cellulose

Country Status (1)

Country Link
GB (1) GB267569A (en)

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