Thesis /

ROMDOC-THESIS-2010-090

Coloranţi benzotiazolici pentru substraturi de tip proteic

Tarlea, Maria-Marcela (UPB)
2006-01-01

Abstract: Dissertation presents a literature statement envolving: methods for benzothiazole dyestuffs synthesis and their application in various industry sectors; literature study on interaction of acid dyestuffs containing water solubilizing groups with supports to be dyed – chrome leather and woolen sheepskins; study on assessment of dyed support colour generally, and particularly of leather. The experimental part has involved the following: - synthesis of 2-aminobenzohiazoles 6-substituted with methyl, methoxy, chloro, nitro and SO3H groups and synthesis of a new class of acid benzothiazole dyes containing sulphonic groups; - physical-chemical characterization of the resulted products; - application of the acid benzothiazole dyes in leather and woolen skin dyeing and objective assessment of their colours by means of a colour measurement software. Solubility of the 2-aminobenzohiazoles 6-substituted with -CH3, -OCH3, -Cl, -NO2 groups was increased when these were sulphonated with fuming sulphuric acid containing 22-24 % SO3, resulting in blends of two isomers 4 and 5 of sulphonic acid with -CH3, two isomers 5 and 7 of sulphonic acid with -OCH3, and of three isomers with –Cl, and a single product with -SO3H in position 4 for the –NO2 substitute. These products were the diazotizable constituent to obtain 4 series of benzothiazole dyestuffs by coupling with 12 coupling constituents, resulting in 52 benzothiazole dyestuffs of increased water solubility which can be used in bath dyeing of the protein supports like as leather and furs. The colours of the dyed furs were assessed by an own software – COLORINDEX.

Keyword(s): Coloranţi organici sintetici -- Coloranţi industriali -- Teză de doctorat ; Coloranţi industriali -- Industria pielăriei -- Teză de doctorat ; Colorimetrie -- Teză de doctorat
Note: Corneliu Cincu, Corneliu Tărăbăşanu-Mihăilă

OPAC: See record in BC-UPB Web OPAC
Full Text: see files

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