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
  • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
• • 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
  • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
  • D01F2/08—Composition of the spinning solution or the bath

Definitions

• This invention relates to the production of cellulose compounds suitable for use as films or filaments for fabrics from the material known commercially as viscose from a solution of cellu-- lose as described in T].
• viscose for the manufacture of yarns and fabrics from viscose, preference has been given to setting baths consisting of acidulated solutions. This is readily understood in view of the fact that viscose contains a cellulose derivative which is soluble in an alkaline solution, that is to say, it cannot be precipitated by being acted upon by an alkali.
• Tn making the setting bath preferably prepare a solution containing ammonium sulfate, and a neutral salt such as sodium sulfate (Glaubers salt), magnesium chlorid, calcium-ohlorid, or sodium chlorid. Tn place of such neutralsalts, T can also employ such a material as a tertiary alcohol, e. g. glycerin.
• a neutral salt such as sodium sulfate (Glaubers salt), magnesium chlorid, calcium-ohlorid, or sodium chlorid.
• Tn place of such neutralsalts T can also employ such a material as a tertiary alcohol, e. g. glycerin.
• the quantity of ammonium salt to be added to the neutral salt solution such as brine may be varied within narrow limits only. The amount depends to a great extent u on the kind of product which it is desire to produce and would require to be diflerent in the case of coarse fibers, say imitation horse hair and in the case of fine fibers such as are necessary. for artificial silk.
• the bestmy improved precipitating bath some third I substance, (such as an oxidizing agent or a reducing salt) just as in the case of acid baths.
• These agents which may be sugar, arsenous compounds or the like, (which act as reducing agents) or sodium hypochlorite (which acts as an oxidizing agent) have the effect of adding brilliancy to the fibers.
• the filaments or films may he squirted in any suitable way into the precipitating bath and on leaving this they are wound prefer.
• organic substances are'added for known purposes to affect the product and it has been found that with the invention such substances may be used with similar results as obtained in the known coagulating solutions.
• a setting bath containing one or more of the neutral salts above referred to (NaCl, Na SO MgCl CaCl etc.), which compounds are generically referred to as a neutral salt of an alkali-forming metal and also containing a relatively small amount of an ammonium salt, capable of existing in solution with the neutral salt (one or more of such) employed.
• Other agents for the productlon of special effects may be added if desired.
• the bath will preferably be substantially saturated with the neutral salt employed.
• ammonium salt this may be ammonium sulfay 'or ammonium chlorid, and I find that a mixture of these two, also gives good results.
• What I claim is 1. Process for treating cellulose products for the manufacture of films and filaments, which consistsin squirting the viscose into an acid-free concentrated solution of a neutral salt also containing only a small percentage of an ammonium salt.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free bath containing a neutral salt and about ten per cent. of ammonium sulfate.
• Aprocess of treating viscose which consists in squirting the same into an acidfree solution containing ammonium sulfate and sodium sulfate.
• a process for treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a solution-substantially saturated with a neutral salt, and containing a small percentage only of an ammonium salt.
• a process of treating viscose which comprising subjecting the same to the action'of an acid-free setting bath comprising a solution substantially saturated with a neutral salt, and containing not over 10% of an ammonium salt.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a solution substantially saturated with a neutral salt, and containing not over 10% of ammonium sulfate.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a. solution substantially saturated with sodium percentage only of an ammonium salt.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a solution substantially saturated with sodium sufate and containing not over 10% of an ammonium salt.
• a process of treating viscose whichcomprises subjecting the same to the action of an acid-free settin bath comprisin a solution substantially saturated with sodium sulfate and containing not over 10% of an ammonium sulfate.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprisin a solution substantially saturated with sodium sulfate and containing an ammonium salt.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a solution substantially saturated with a nontral salt of an alkali forming metal and COiltiLlIllIlg not over 10% of an ammonium sa t.-
• a process of treating viscose which comprises subjecting thesame to the action of an acid-free setting bath comprising a solution substantially saturated with a neutral salt ofan alkali forming metal and containing a small percentage of an ammonium salt.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a solution substantially saturated with a neutral salt of an alkali forming metal and containing ammonium sulfate.
• a process of treating viscose which comprises subjecting the same to the action of an acid-free setting bath comprising a solution substantially saturated with sodium 10 sulfate and containing not over 10% of an ammonium sulfate.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Artificial Filaments (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=32661150

Family Applications (1)

Country Status (5)

• 1913
  • 1913-02-15 DE DE1913290832D patent/DE290832C/de not_active Expired
  • 1913-05-10 GB GB191311104D patent/GB191311104A/en not_active Expired
  • 1913-06-09 FR FR458979A patent/FR458979A/fr not_active Expired
  • 1913-06-11 NL NL2775A patent/NL1118C/nl active
• 1916
  • 1916-08-12 US US114661A patent/US1399587A/en not_active Expired - Lifetime

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