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    Production or treatment of pigments and textile and other materials containing them
    1.
    发明授权
    Production or treatment of pigments and textile and other materials containing them 失效
    生产或处理颜料和纺织品及其他含有的材料

    公开(公告)号：US2278540A

    公开(公告)日：1942-04-07

    申请号：US22101038

    申请日：1938-07-23

    Applicant: CELANESE CORP

    Inventor： HOLLAND ELLIS GEORGE ,  EDMUND STANLEY

    IPC: C09C1/36 ,  D01F1/04 ,  D06M11/46

    CPC classification number: C09C1/3692 ,  C01P2006/60 ,  C09C3/06 ,  C09C3/063 ,  C09C3/08 ,  D01F1/04 ,  D06M11/46 ,  Y10S8/921 ,  Y10S8/93

    Abstract: 501,805. Artificial filaments, films, etc.; treating textiles with liquids; dyeing processes ; pigments; metallic oxides &c. ELLIS, G. H., and STANLEY, E. Sept. 1, 1937, No. 23923. [Classes 2 (ii) and 15 (ii)] [Also in Group III] A product suitable for use as a pigment in artificial silk, films, moulded articles, and the like is obtained by a process wherein titanium dioxide is associated or treated with a compound of a metal of Group V, subgroup A, of the Periodic Table, at normal or moderately elevated temperature only. The titanium dioxide may be in a textile material, film, or moulded article. The presence of a compound of vanadium, tantalum, or similar element counteracts the tendency for artificial silk delustred with titanium oxide to lose strength when exposed to light, and for dyeings on such materials to fade. The titanium dioxide may be associated with a copper compound together with the vanadium compound The vanadium compound may be incorporated with titanium dioxide before or after the latter is incorporated in the artificial silk and before or after dyeing. It may be incorporated in the solution from which filaments or films are obtained. Vanadium trichloride, ammonium vanadate, or other salts may be used in the form of dilute aqueous solutions containing, if desired, formic, acetic, or other organic acid. The titanium dioxide in finely divided form may be heated or boiled with a solution of a vanadium salt. The treatment may be such that an oxide, hydroxide, or other water-insoluble compound of vanadium is fixed on the titanium dioxide or material containing it. The vanadium compound may be directly mixed with the titanium dioxide. The fastness of water-soluble azo dyes on regenerated cellulose, or soluble or insoluble azo dyes on cellulose acetate when these materials contain titanium dioxide, is improved by the process. The process may be used in association with the dyeing of cellulose acetate materials containing titanium dioxide, with aminoanthraquinone dyes, e.g. 1À4-diamino or 1À4-amino-oxy-anthraquinone or their substitution products, or with indigoid dyes, or waterinsoluble azo dyes produced on the fibre, e.g. those produced by coupling diazotized amines with #-naphthol, arylamides of 2À3-oxy-naphthoic acid, or diacyl-acetyl derivatives of aromatic diamines. In an example, finely divided titanium dioxide is heated at 85-90‹ C. with a solution of ammonium vanadate and formic acid in water, filtered, washed, dried, and incorporated in a cellulose acetate spinning solution. In another example, a cellulose acetate fabric of low lustre due to the presence of titanium dioxide is treated with a hot solution of ammonium vanadate and formic acid in water. Specification 475,356 is referred to.

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