GB406985A - Improvements in the manufacture of films, sheets and the like - Google Patents

Improvements in the manufacture of films, sheets and the like

Info

Publication number
GB406985A
GB406985A GB23631/32A GB2363132A GB406985A GB 406985 A GB406985 A GB 406985A GB 23631/32 A GB23631/32 A GB 23631/32A GB 2363132 A GB2363132 A GB 2363132A GB 406985 A GB406985 A GB 406985A
Authority
GB
United Kingdom
Prior art keywords
film
coagulating
solvent
films
baths
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
GB23631/32A
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.)
Henry Dreyfuss Associates LLC
Original Assignee
Henry Dreyfuss Associates LLC
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 Henry Dreyfuss Associates LLC filed Critical Henry Dreyfuss Associates LLC
Priority to GB23631/32A priority Critical patent/GB406985A/en
Publication of GB406985A publication Critical patent/GB406985A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0016—Plasticisers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/10—Esters of organic acids
    • C08J2301/12—Cellulose acetate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

Films, foils, sheets, and like products are made from solutions of cellulose esters or ethers in organic solvents with the aid of coagulating baths comprising aqueous, alcoholic, or aqueous alcoholic solutions of aliphatic polyhydroxy compounds or esters or ethers thereof which compounds have no solvent action at ordinary temperatures on the cellulose derivatives. The coagulating baths may contain low concentrations of solvents for the cellulose derivatives. The use of baths containing emulsifying agents, and processes in which at least part of the coagulating medium moves so as to exert a drag on the films, are excluded. The polyhydroxy compound may be glycol, glycerol, sugars, acetates or benzoates of sugars, erythritol, mannitol, sorbitol, mannitan diacetate, water-soluble starch esters, or cellulose degradation products. The composition, or concentration of the spinning solutions and of the coagulating baths may be adjusted so that the differences between the specific gravities are not so great as to cause interference in the process of film formation. The film-forming solution may contain solvents of high or low boiling point, plasticisers, and nonsolvent diluents. Stretching may be performed during coagulation. Coagulation may be effected in stages or the films may be extruded into a liquid containing a high proportion of a polyhydric compound and having a low solvent power for the solvent of the film-forming solution, and liquid which is a solvent for the solvent of the film-forming solution may be added at points along the path of the film so as progressively to increase the coagulating power of the bath. In an example, cellulose acetate dissolved in acetone, triacetin, and ethylacetate is extruded in the form of a film which is received on a drum rotating in a coagulating bath of glycerol and water. The film is washed with salt solution and then with water before being dried. Specifications 343,062, 375,424, 400,589, and 405,692 are referred to.
GB23631/32A 1932-08-23 1932-08-23 Improvements in the manufacture of films, sheets and the like Expired GB406985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23631/32A GB406985A (en) 1932-08-23 1932-08-23 Improvements in the manufacture of films, sheets and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23631/32A GB406985A (en) 1932-08-23 1932-08-23 Improvements in the manufacture of films, sheets and the like

Publications (1)

Publication Number Publication Date
GB406985A true GB406985A (en) 1934-02-23

Family

ID=10198773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23631/32A Expired GB406985A (en) 1932-08-23 1932-08-23 Improvements in the manufacture of films, sheets and the like

Country Status (1)

Country Link
GB (1) GB406985A (en)

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