Patent GB-269960-A (GB)
Title: Improvements in the dyeing, printing or stencilling of acetyl cellulose or products made therewith
IPC: D06P3/42
Filed: 1926-01-20
Abstract: 269,960. British Celanese, Ltd.., Ellis, G. H., and Goldthorpe, W. O. Jan. 20, 1926. Addition to 242,711. Dye preparations.-Relates to preparations for the dyeing, printing or stencilling of materials composed of or containing cellulose acetate, the said preparations comprising insoluble dyestuffs or organic compounds or such substances of relatively low solubility, which have been obtained in a soluble form by treatment with sulphoricinoleic acid or other substances having oily or fatty characteristics, as described in Specification 219,349, and has particular reference to the process of the parent case according to which certain auxiliary solvents are used in conjunction with these solubilizing agents. According to the present invention the following auxiliary solvents are used wholly or partly in place of the auxiliary solvents of the parent case : -chlornaphthalenes; aromatic hydrocarbons such as benzene, toluene, xylene, cumene, propylbenzene, o-methylethylbenzene, mesitylene, diphenylmethane and naphthalene; paraffin hydrocarbons such as heptane, tri-ethylmethane, A-nonane and nonane; hydrocarbons from petroleum such as decanaphthene, undecanaphthene, dodecanaphthene, tetradecanaphthene, pentadecanaphthene, and duodecylene; terpenes such as turpentines, pinene and sylvestrene; unsaturated hvdrocarbons such as butylethylene, methylcyclopentene, tetramethylethylene, 1: 4-dihydrobenzene; cyclopentene, cymene and 1:1: 2-trimethylcyclopentene; or commercial liquids containing these compounds such as turpentine, petroleum, solvent-naphtha, and commercial benzol. The process may be applied to the non-sulphonated or other insoluble derivatives of the azo class referred to in Specification 219,349; to simple amino bases for application by the azoic method; the unreduced colouring matters of the benzocr naphtho-quinone monoimide series, that is, indophenols; to colouring matters of the diphenylmethane, triphenylmethane, triarylmethane, oxazine, azine and thiazine series; to unreduced indigoid or basic derivatives of the anthraquinone series; to the non-sulphonated derivatives of the pyrazolone series referred to in Specification 224,681; to the unreduced vat dyestuffs of the anthraquinone series referred to in Specification 227,183; to nitro-derivatives of diarylamines such as are referred to in Specification 237,943 ; or colouring matters of the stilbene group such as are referred to in Specification 253,978. The dyestuffs &c. may be treated with the solubilizing agents and with the auxiliary solvents above referred to in any order, separately or together, at any temperature or pressure, in the presence or absence of water. In examples, 1-hydroxy-4- amincanthraquinone dissolved by boiling in xylene, is passed through a fine sieve into 50 per cent turkey red oil, the mixture diluted with soft water and stirred until homogeneous; 4- chlor-2-nitro-4<1>-methoxydiphenylamine is ground with sodium sulphoricinoleate, the mixture heated and subsequently diphenylamine stirred in; 4- nitro-2-methoxy-4<1>-dimethylaminoazo-benzene is intimately mixed with turpentine and turkey red oil, and sufficient water added to form a paste.