Summary
Samenvatting overzicht kleurstoffen finishen
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overzicht kleurstoffen finishen
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Directe kleurstoffen (substantieve kleurstoffen)Positief Negatief Toepassingen
Oplosbaar in water Geen goede natechtheden Goedkope T-shirts
Grote affiniteit voor cellulose Geen goede lichtechtheden
Gemakkelijk aan te wenden
Relatief goedkoop
Relatief levendige tinten
Ruim kleurenspectrum
Kuipkleurstoffen
Eigenschappen: onoplosbaar in water
verkuipen = behandelen van de kleurstof door ze chemisch te doen reageren
Chemisch reduceren Oxidatie
Onoplosbaar oplosbaar
Alkali O2
onoplosbaar
Na verven is kokend wassen noodzakelijk om de oppervlakkig vastgehouden
kleurstoffen te verwijderen en om de definitieve kleur te verkrijgen
Positief Negatief Toepassingen
goede lichtechtheid Middelmatige kleurechtheid Dure werkkledij,
tenten, …
Goede wasechtheid Enkel doffe tinten
Zwavelkleurstoffen
Eigenschappen: onoplosbaar in water
verkuipen = behandelen van de kleurstof door ze chemisch te doen reageren
Chemisch reduceren Oxidatie
Onoplosbaar oplosbaar
Natriumsulfide O2
onoplosbaar
Handelsproducten: eerste stap overbodig
Positief Negatief Toepassingen
Goedkoop Licht en wasechtheid iets Goedkope werkkledij
minder dan kuipkleurstoffen en fluweel
Enkel doffe tinten : zwart,
blauw, olijfgroen en bruin
Niet bestand tegen chloor
Ecologisch niet gunstig
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