GB413368A - Improvements relating to the manufacture from cellulose esters of artificial products, such as artificial silk, films, plastic masses, intermediate layers for safety glass, laquers and the like - Google Patents

Improvements relating to the manufacture from cellulose esters of artificial products, such as artificial silk, films, plastic masses, intermediate layers for safety glass, laquers and the like

Info

Publication number
GB413368A
GB413368A GB1826/33A GB182633A GB413368A GB 413368 A GB413368 A GB 413368A GB 1826/33 A GB1826/33 A GB 1826/33A GB 182633 A GB182633 A GB 182633A GB 413368 A GB413368 A GB 413368A
Authority
GB
United Kingdom
Prior art keywords
acid
esters
cellulose
films
primary
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
GB1826/33A
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.)
C F Boehringer & Soehne GmbH
Roche Diagnostics GmbH
Original Assignee
C F Boehringer & Soehne GmbH
Boehringer Mannheim GmbH
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 C F Boehringer & Soehne GmbH, Boehringer Mannheim GmbH filed Critical C F Boehringer & Soehne GmbH
Publication of GB413368A publication Critical patent/GB413368A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
    • C09D101/08—Cellulose derivatives
    • C09D101/10—Esters of organic acids
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/10—Esters of organic acids, i.e. acylates
    • C08L1/12—Cellulose acetate
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
    • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

For the manufacture of artificial silk, films, plastic masses, intermediate layers of laminated glass, lacquers &c., there are employed cellulose fatty acid esters obtained from primary cellulose tri-esters in the preparation of which have been used catalysts which do not remain in combined form in the cellulose ester, in particular with the exclusion of sulphuric acid, phosphoric acid, bisulphates and sulphuryl chloride, by subjecting these esters in the undissolved condition to a gentle after-treatment with acid saponifying agents in such a manner that the acid content of the ester does not diminish by more than 5 per cent. Operating in this manner, the useful properties of the primary esters are retained and there is an improvement in the elasticity and extension in many cases even with a reduction of acid content of one per cent; substantially no change of solubility characteristics occurs, except in the case of mixed esters. The primary cellulose esters may be prepared with the aid of the catalysts of Specification 363,700, and in particular by a process such that the original fibrous structure of the cellulose is retained, as by the addition of cyclohexanol acetate, ethyl acetate, benzene toluene or ligroin. In examples, artificial silk, films &c. are made from primary cellulose tri-acetates prepared with the aid of perchloric acid or zinc chloride as catalysts, after subjecting these esters to treatment at room temperature with 3 N-hydrochloric acid, 1-1,5 N-nitric acid or 1,5 N-perchloric acid or a mixture of acetic and perchloric acids; or from a cellulose acetate-isovalerianate made according to the process of Specification 396,575, after treatment at 20 DEG C. with 1,5 N-nitric acid.
GB1826/33A 1932-01-02 1933-01-19 Improvements relating to the manufacture from cellulose esters of artificial products, such as artificial silk, films, plastic masses, intermediate layers for safety glass, laquers and the like Expired GB413368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE413368X 1932-01-02

Publications (1)

Publication Number Publication Date
GB413368A true GB413368A (en) 1934-07-19

Family

ID=6442484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1826/33A Expired GB413368A (en) 1932-01-02 1933-01-19 Improvements relating to the manufacture from cellulose esters of artificial products, such as artificial silk, films, plastic masses, intermediate layers for safety glass, laquers and the like

Country Status (2)

Country Link
GB (1) GB413368A (en)
NL (1) NL40383C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959848C (en) * 1953-10-23 1957-03-14 Rhodiaceta Ag Process for the production of cellulose acetate fibers by the wet spinning process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959848C (en) * 1953-10-23 1957-03-14 Rhodiaceta Ag Process for the production of cellulose acetate fibers by the wet spinning process

Also Published As

Publication number Publication date
NL40383C (en)

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