PL1144B3 - The method of making fibers from viscose uses acidified ammonium salt baths. - Google Patents
The method of making fibers from viscose uses acidified ammonium salt baths. Download PDFInfo
- Publication number
- PL1144B3 PL1144B3 PL1144A PL114421A PL1144B3 PL 1144 B3 PL1144 B3 PL 1144B3 PL 1144 A PL1144 A PL 1144A PL 114421 A PL114421 A PL 114421A PL 1144 B3 PL1144 B3 PL 1144B3
- Authority
- PL
- Poland
- Prior art keywords
- ammonium salt
- viscose
- making fibers
- salt baths
- acidified ammonium
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 10
- 150000003863 ammonium salts Chemical class 0.000 title claims description 9
- 229920000297 Rayon Polymers 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Najdluzszy czas trwania patentu do 1 wrzesnia 1939 r.Niniejszy wynalazek dotyczy ulepszenia wyrobu wlókien z wiskozy zapomoca slabo zakwaszonych kapieli amonowych, w wa¬ runkach, wspomnianych w patencie pol¬ skim Nr. 528, przy których mozna otrzy¬ mac wlókna kazdej zadanej grubosci.Niniejszy wynalazek prowadzi z jednej strony do znacznego potanienia produktu wskutek wprowadzenia soli amonowej, 2 drugiej strony nowy stosunek mieszalny nadaje sie szczególnie dla wspomnianego juz niezwykle ekonomicznego rodzaju uzyt¬ kowania, nagromadzonych na wlóknach, soli do wytwarzania kapieli przedzalnych.Przy przedzeniu wiskozy w zakwaszo¬ nych kapielach z soli amonowych tworzy sie naturalnie pewna ilosc siarczanu sodo¬ wego, która w malej czesci pozostaje w ka¬ pieli przedzalnej, w wiekszej zas czesci zo¬ staje zabrana wraz z wlóknem, w którem lub na którem sie tworzy.Przy systematycznem wyplókiwaniu wlókien zapomoca rozcienczonego kwasu siarkowego i powrotnego odprowadzenia wody plócznej po wyparowaniu do kapieli przedzalnej, daje sie z latwoscia osiagnac stan równowagi soli, który okazal sie nad¬ zwyczajnie korzystny, gdy stezenie kwasu przy uwzglednieniu skladowej soli amono¬ wej zostalo odpowiednio uregulowane.Przy przedzeniu wlókien o 2 denierach przychodzi sie naprzyklad zwolna do ka¬ pieli o nastepujacym skladzie, który zapo¬ moca stalego dodawania niewielkiej ilosci soli amonowej, glównie zas tylko kwasu siarkowego z wyparowanych kapieliplócznych trzeba utrzymywac stalym, jak tego wymaga osiagniecie jednostajnie far¬ bujacego sie produktu od jednostajnych fi¬ zykalnych stalych.W litrze kapieli przedzalnej znajduje sie: 200 g kwasu siarkowego, 200 „ siarczanu amonowego, 300 „ siarczanu sodowego.Rozumie sie, ze stosunki pomiedzy o- bydwoma solami nie sa niezmienne, moz¬ na takze np. dodac jeszcze siarczanu ma¬ gnezu w pewnych ilosciach, gdy tylko pod wzgledem skladowej soli amonowej stezenie kwasu odpowiednio do stopnia cienkosci zostanie w znany sposób naregu¬ lowane i bedzie tyle soli, ze ostrosc soli zo¬ stanie zlagodzona.Wyprzedzone w tych kapielach wlókna okazuja te wlasciwosc, ze przy suszeniu tylko niewiele sie kurcza, a wiec wlasci¬ wosc szczególnie ceniona przy fabrykacji luznych wlókien jako produktu masowego,, albowiem odpada uciazliwe suszenie pod naprezeniem. PLThe longest term of the patent until September 1, 1939. The present invention relates to the improvement of a viscose fiber product by means of weakly acidified ammonium baths under the conditions mentioned in Polish Patent No. 528, at which it is possible to obtain fibers of any desired thickness. The present invention leads, on the one hand, to a significant reduction in the price of the product due to the introduction of the ammonium salt, and on the other hand, the new miscible ratio is particularly suitable for the already mentioned extremely economical type of use, accumulated on the fibers When the viscose is mixed with acidified ammonium salt baths, a certain amount of sodium sulphate is naturally formed, which remains in a small part in the pre-primary bath, and for the most part is taken up with the fiber. in which or on which it is formed. By systematically rinsing the fibers with dilute sulfuric acid and draining the tufted water back after evaporation into a prenasal bath, it is easy to achieve a salt equilibrium, which has proved to be extremely favorable when the acid concentration is taken into account of the ammonium salt component has been adjusted accordingly When the 2-denier fibers are separated, for example, a slow-drying bath with the following composition is obtained, which is prevented by the constant addition of a small amount of ammonium salt, and mainly only sulfuric acid from the evaporated baths, must be kept constant, as required to achieve uniformity. the product swings from uniform physical solids. A liter of pre-bath contains: 200 g of sulfuric acid, 200 "ammonium sulfate, 300" sodium sulfate. It is understood that the ratios between the two salts are not constant, it is also possible For example, add more magnesium sulphate in certain amounts, as soon as the acid concentration of the ammonium salt component is adjusted to the degree of thinness in a known manner and the salt is so high that the sharpness of the salt is softened. show also the property that it shrinks only a little during drying, so this property is especially valued in the manufacture of loose these fibers as a mass product, because there is no troublesome drying under tension. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL1144B3 true PL1144B3 (en) | 1925-01-31 |
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