GB857390A - Improvements in cellulose acetate compositions and products and methods of making the same - Google Patents

Improvements in cellulose acetate compositions and products and methods of making the same

Info

Publication number
GB857390A
GB857390A GB17164/59A GB1716459A GB857390A GB 857390 A GB857390 A GB 857390A GB 17164/59 A GB17164/59 A GB 17164/59A GB 1716459 A GB1716459 A GB 1716459A GB 857390 A GB857390 A GB 857390A
Authority
GB
United Kingdom
Prior art keywords
weight
composition
cellulose acetate
methyl acetate
methods
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
GB17164/59A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB857390A publication Critical patent/GB857390A/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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
    • C08J3/095—Oxygen containing compounds
    • 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)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Artificial Filaments (AREA)

Abstract

A composition suitable for spinning filaments comprises 16-18% by weight of cellulose acetate, having a combined acetic acid value of 59,8-60,6%, dissolved in a mixture of methyl acetate and acetone containing 20-80% by weight of methyl acetate. The cellulose acetate preferably has a combined acetic acid value of about 60,0%, and the solvent mixture preferably contains about 64% by weight of methyl acetate. The composition may contain minor proportions of substances which have no substantial effect on the spinnability of the solution (e.g. pigments), and the solvent mixture should contain not more than 0,6% by weight of water. The composition may be made by bringing the ingredients together in the stated proportions at a temperature below -20 DEG C., preferably at -50 DEG C., and then raising the temperature to effect solution. Filamentary material may be made by conventional dryspinning methods from the composition and the product may be heat-set, preferably while in fabric form. Preferred heat-setting conditions comprise dry heat at 210-250 DEG C. for 20-180 seconds, or steam at 10-50 p.s.i.g. for 5-30 mins. The former treatment may also be followed by exposure to steam at atmospheric pressure (substantially 100 DEG C.) for 10-60 mins. U.S.A. Specifications 2,346,350 and 2,362,182 are referred to.
GB17164/59A 1958-05-23 1959-05-20 Improvements in cellulose acetate compositions and products and methods of making the same Expired GB857390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US857390XA 1958-05-23 1958-05-23

Publications (1)

Publication Number Publication Date
GB857390A true GB857390A (en) 1960-12-29

Family

ID=22193616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17164/59A Expired GB857390A (en) 1958-05-23 1959-05-20 Improvements in cellulose acetate compositions and products and methods of making the same

Country Status (1)

Country Link
GB (1) GB857390A (en)

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