US2045347A - Production of threads and the like - Google Patents

Production of threads and the like Download PDF

Info

Publication number
US2045347A
US2045347A US638177A US63817732A US2045347A US 2045347 A US2045347 A US 2045347A US 638177 A US638177 A US 638177A US 63817732 A US63817732 A US 63817732A US 2045347 A US2045347 A US 2045347A
Authority
US
United States
Prior art keywords
cellulose
ester
acetone
filaments
spinning
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 - Lifetime
Application number
US638177A
Other languages
English (en)
Inventor
Dreyfus Henry
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
Application granted granted Critical
Publication of US2045347A publication Critical patent/US2045347A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • 356,170 processes are dewith relatively small quantities of water, this phescribed for the manufacture of filaments and nomenon may detract somewhat from the comother spun products from solutions of cellulose flareal valueof the products.
  • esters of low degree of esterification i. e. esters
  • the above spinning solutions may be spun by having less than two ester groups per cellulose dry or wet spinning methods.
  • the said patent refers to disditions will, of course, be adjusted in accordance 10 solving the saidestersin mixtures of acetone with with the nature of the product desired. 7 For Wate'r forthe purpose of manufacturing the spun example the spinning conditions may be adjustproducts.
  • filaments of round cross-section sults may be obtained by employing as solvent or of'relatively flat cross-section, or they may be for esters of low ester content, e. g. those deadjusted toobtain hollow or voluminous filaments, 15
  • the temperatures necessary to obtain a particular realcohol may, for example, constitute as much as sult, employing as solvent mixture the mixture diacetates or cellulose acetates of slightly lower somewhat higher than those which may be used acetyl content. Usually good results are obtainto obtain similar products using acetone or mixable with proportions of -40% of alcohol and tures-of acetone with small quantities of water. 70-60% of acetone.” With an acetate of 52% Filaments prepared from the spinning solutions 30 acetyl content, somewhat less alcohol may be used. described herein may be stretched'in any suitable 30 The alcohol in the above mixtures may be partly manner, or maybe -shrunk, if desired, by any replaced by water.
  • Such filaments may-also be acetate having an acetyl value of about 48% a submitted to partial or total saponifieation, or solvent mixture may comprise 60-75% of acetone treated by processes calculated to modify their 20-35% of methyl or ethyl alcohol and -5-10% of dyeing l properties. Processes according to the water. Instead of acetone other ketones may be present invention may also be used in conjunction used as for example methyl ethyl ketone. with processes for reducing or modifying the Cellulose esters of relatively low ester content lustre of the filaments. for use in this invention may be prepared by any The following example will serve to illustrate 40 suitable process.
  • 356,170 also attained in the process acsolved to form a 25% solution in a solvent mixcording to the present invention but in addition, ture consisting of 70 parts of acetone, 25 parts inasmuch as it is possible to replace far more aceof ethyl alcohol and 5 parts of water.
  • the solu- 50 tone by alcohol or by mixtures of alcohol and tion so obtained is extruded from suitable orifices water than is possible in the case of water only, into a heated evaporative medium such as air or considerable economies can be effected. Moreother gas maintained for example at a temperaover, I find that when spinning at high speed, ture of 7585 C. and the filaments thus formed for example 200-300 metres per minute or more, are associated by twisting.
  • the invention is particularly important in re- 55 lation to the spinning of filaments and like products from cellulose acetates, but may also be employed for the production of filaments and other products from cellulose propionates, cellulose butyrates, cellulose formates, cellulose nitroacetates and like organic esters of cellulose and mixed ether-esters of cellulose such as ethyl cellulose acetate and oxyethyl cellulose acetate.
  • the step oi forming said solution by dissolving said organic 'ester of cellulose in a solvent mixture containing a substance selected from the group consisting of acetone and methyl ethyl ketone, and an alcohol.
  • a spinning solution for the production of filaments, yarns, bristles, straw, ribbons, films and the like comprising an organic ester of cellulose of relatively low ester content ,dissolved in a solvent medium containing acetone and a lower fatty alcohol, said ester being the only cellulose esterpresent in the solution.
  • a spinning solution for the production of filaments, yarns, bristles, straw, ribbons and the like, which comprises a cellulose acetate contain: ing less than two acetyl radicles per molecule of cellulose, considered as Cal-1100s, dissolved in a solvent mixture comprising acetone and ethyl alcohol, said cellulose acetate being the onlycellulose ester present in the solution.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
US638177A 1931-11-02 1932-10-17 Production of threads and the like Expired - Lifetime US2045347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30369/31A GB391783A (en) 1931-11-02 1931-11-02 Improvements in the production of threads, films and the like

Publications (1)

Publication Number Publication Date
US2045347A true US2045347A (en) 1936-06-23

Family

ID=10306572

Family Applications (1)

Application Number Title Priority Date Filing Date
US638177A Expired - Lifetime US2045347A (en) 1931-11-02 1932-10-17 Production of threads and the like

Country Status (3)

Country Link
US (1) US2045347A (xx)
FR (1) FR743625A (xx)
GB (1) GB391783A (xx)

Also Published As

Publication number Publication date
FR743625A (xx) 1933-04-03
GB391783A (en) 1933-05-02

Similar Documents

Publication Publication Date Title
US2075888A (en) Production of artificial filaments, threads, ribbons or the like by the dry spinning method
US2657973A (en) Process for wet-spinning cellulose triacetate
US2045347A (en) Production of threads and the like
US2303338A (en) Preparation of artificial filaments or threads
US2354745A (en) Method of producing artificial shaped articles
US2081171A (en) Manufacture of artificial materials
US2789915A (en) Plasticized benzyl dextran and filament formed therefrom
US2147642A (en) Production of artificial filaments, films, and like materials
US2099005A (en) Production or treatment of artificial filaments, threads, yarns, ribbons, and the like
US2775529A (en) Manufacture and use of cellulose esters
US1941204A (en) Manufacture of useful products from cellulose derivatives
US1920212A (en) Method of manufacturing artificial threads or filaments
US2123934A (en) Production and treatment of artificial filaments, yarns, films, and other materials containing cellulose derivatives
US2065664A (en) Manufacture of articles from cellulose esters or ethers
US2094780A (en) Production of artificial filaments and other products
US2147641A (en) Production of artificial filaments, films, and like materials
US2303528A (en) Production of artificial materials
US3012847A (en) Process for wet spinning cellulose triesters
US2070630A (en) Manufacture of artificial filaments and other products containing organic derivatives of cellulose
US2065766A (en) Manufacture of artificial products
US2045370A (en) Artificial materials and process of making the same
US2015067A (en) Textile material
US2083694A (en) Manufacture of artificial materials
US2081144A (en) Artificial material and process for its manufacture
US1620636A (en) Manufacture of artificial threads and filaments