PL32253B1 - A method of producing hollow viscose fibers - Google Patents
A method of producing hollow viscose fibers Download PDFInfo
- Publication number
- PL32253B1 PL32253B1 PL32253A PL3225338A PL32253B1 PL 32253 B1 PL32253 B1 PL 32253B1 PL 32253 A PL32253 A PL 32253A PL 3225338 A PL3225338 A PL 3225338A PL 32253 B1 PL32253 B1 PL 32253B1
- Authority
- PL
- Poland
- Prior art keywords
- viscose
- carbonate
- producing hollow
- calcium
- production
- Prior art date
Links
- 229920000297 Rayon Polymers 0.000 title claims description 18
- 239000000835 fiber Substances 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 7
- 239000000344 soap Substances 0.000 claims description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 239000004604 Blowing Agent Substances 0.000 claims 1
- 235000019738 Limestone Nutrition 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- 239000006028 limestone Substances 0.000 claims 1
- 229940043430 calcium compound Drugs 0.000 description 3
- 150000001674 calcium compounds Chemical class 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000001177 diphosphate Substances 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical class [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- -1 for example Chemical class 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 125000005341 metaphosphate group Chemical group 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
Description
Znane jest wytwarzanie pustych we¬ wnatrz wlókien wiskozowych, polegajace na tym, ze stasuje sie ksanitogenian celu¬ lozy o duzej zawartosci weglanu sodu, któ¬ ry pod dzialaniem kwasnej kapieli prze¬ dzalniczej wytwarza w kapieli dwutlenek wegla.Materialy celulozowe, stosowane do wy¬ twarzania wiskozy, a zwlaszicza masa drze¬ wna, zawiera slady zwiazków wapnia. So¬ da stosowana moze równiez zawierac zwia¬ zki wapnia. Te drobne ilosci zwiazków wapnia przy wytwarzaniu wlókien wisko¬ zowych o pelnych wlóknach naogól nie sa szkodliwe, lecz przy wytwarzaniu nici pu¬ stych tworzy sie w wiskozie weglanowej osad krystaliczny podwójnego weglanu so¬ du i wapnia. Krysztalki te rosna bardzo powoli i sa powazna przeszkoda z uwagi na to, iz rozrost ich nastepuje po filtracji i w czasie dojrzewania, powodujac nad¬ mierne pecznienie wlókien, które sa slabe.Przedmiotem wynalazku jest sposób wy¬ twarzania z wiskozy weglanowej pustych wewnatrz wlókien wiskozowych, oparty na zapobieganiu wytwarzania sie podwójnego weglanu znanego pod nazwa Gay-Lussite.Sposób polega na tym, iz do wiskozy weglanowej, przed filtrowaniem wprowa¬ dza sie srodki, wytracajace slady wapnia, zawarte w masie drzewnej lub innych ma¬ terialach wyjsciowych, w celu unikniecia pózniejszego wytracania sie nieroizpuszczail- nego weglanu podwójnego sodu i wapnia.Rozumie sie, iz wytworzony osad nalezy usunac przeiz zwykle filtrowanie. Niezna-ózaue slady osadu, przechodzace ewentual¬ nie przez filtr, nie sa juz szkodliwe.Wytracanie wapnia mozna uskuteczniac za pomoca róznych soli, zaiwierajacych anion, tworzacy nierozpuszczalne sole wapniowe, jak np. za pomoca dwufo&fora- nów, szczawianów, metafosforanów, bora¬ nów, glinokrzenrianów, poldtsiarczynów, gli- nKaiiów ltd., leoz najkorzystniejsze wyniki osiaga sie przez dodawanie do wiskozy malych ilosci mydla. Mydlo stosuje sie w ilosci od 0,01—1% w (stosunku do wi¬ skozy, w zaleznosci od zawartosci wap- nlia w masie drzewnej. Mozna stosowac wszelkie rodzaje mydel, jak np. mydlo marsylskie albo mydlo lojbwe. Mozna rów¬ niez stosowac srodki tluszczowe lub kwasy tluszczowe albo ogólnie srodki zdolne do wytworzenia mydel w wiskozie pod dzia¬ laniem zawartych w niej zwiazków waip- niowców.Mozna dodawac np. mniej wiecej 1,5 czesci surowej stearyny na 10 000 czesci wiskozy i nastepnie ptfzefiJtrowac wiskoze wyznany sposób.Wprowadzanie srodków wytracajacych mozna uskuteczniac rówtoiez w dowolnym innym okresie wytwarzania wiskozy np. przy impregnowaniu celulozy alkaliami al¬ bo prfzez rozpuszczefue ich w roztworze weglanu sodu albo w sodzie.Rozumie sie, iz wynalazek nie ograni¬ cza sie do podanego przykladu i ze obej¬ muje rózne odmialny postepowania oparte na tej samej zasadzie. PLIt is known to produce hollow viscose fibers by using cellulose xanitogenate with a high sodium carbonate content, which, under the action of an acid bath, produces carbon dioxide in the bath. Cellulose materials used in The production of viscose, especially wood pulp, contains traces of calcium compounds. The soda used may also contain calcium compounds. These fine amounts of calcium compounds are generally not detrimental to the manufacture of full-fiber viscose fibers, but a crystalline deposit of sodium and calcium double carbonate is formed in the carbonate viscose in the production of hollow strands. These crystals grow very slowly and are a serious obstacle because they grow after filtration and during maturation, causing excessive swelling of the fibers, which are weak. The subject of the invention is a method of making hollow viscose fibers from carbonated viscose, based on the prevention of the formation of the double carbonate known as Gay-Lussite. The method is that the carbonate viscose is loaded with calcium-removing agents from the wood pulp or other starting materials before filtering, in order to avoid the subsequent precipitation of the undissolved sodium and calcium double carbonate. It is understood that the precipitate formed must be removed by usually filtration. Undetectable traces of sediment, possibly passing through the filter, are no longer harmful. Calcium recovery can be effected with the aid of various salts, which contain an anion, which form insoluble calcium salts, such as, for example, with diphosphates, oxalates, metaphosphates, boron new moon, clays, polydsulphites, alumina, etc., but the best results are achieved by adding small amounts of soap to the viscose. The soap is used in an amount of 0.01-1% (in relation to the viscosity, depending on the calcium content of the wood mass. You can use all kinds of soap, such as Marseille soap or tallow soap). use fatty agents or fatty acids, or generally agents capable of producing soap in viscose by the action of vaimilin compounds contained therein. You can add, for example, about 1.5 parts of raw stearin per 10,000 parts of viscose and then filtering the viscose in the prescribed manner The inclusion of the expanding agents can also be effective at any other time in the viscose production, e.g. by impregnating cellulose with alkali or by dissolving them in sodium carbonate solution or in sodium. It is understood that the invention is not limited to the example given and that has different procedures based on the same principle PL
Claims (3)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL32253B1 true PL32253B1 (en) | 1943-10-30 |
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