中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.02 seconds)

    Triarylmethane dyes
    1.
    发明专利
    Triarylmethane dyes 未知

    公开(公告)号：GB978739A

    公开(公告)日：1964-12-23

    申请号：GB3185263

    申请日：1963-08-13

    Applicant: BASF AG

    Inventor： BETTAG LUDWIG ,  KERN EMIL ,  PALM ALBERT ,  SEIBERT WALTER ,  WEISS EMIL

    IPC: C09B11/16

    Abstract: The invention comprises triarylmethane dyes having the formula in which R1 denotes a low molecular weight alkyl group, R2 and R3 are hydrogen atoms or aliphatic, cycloaliphatic, aliphatic-cycloaliphatic radicals which may be connected to form a fused cycloaliphatic ring, and Y is a chlorine or bromine ion. The dyes of the above formula are made by condensing together p,p1-bisdialkyl-aminobenzophenones of formula with a secondary amine having the formula in the presence of a condensing agent containing chlorine or bromine. In formulae III and IV, R1, R2 and R3 have the meanings as above; as condensing agents phosphorus trichloride, tribromide, pentachloride, oxychloride, oxybromide and phosgene are specified. The reactions are carried out in inert solvents, e.g. toluene and xylene, and the dyes produced have good solubility in alcohol and castor oil.

    Stable highly concentrated solutions of basic dyes
    3.
    发明专利
    Stable highly concentrated solutions of basic dyes 未知

    公开(公告)号：GB981547A

    公开(公告)日：1965-01-27

    申请号：GB1185363

    申请日：1963-03-26

    Applicant: BASF AG

    Inventor： FINKENAUER HELMUT ,  SEIBERT WALTER ,  KOHL KARL ,  LUECKE EBERHARD ,  SCHUBERT FRITZ

    IPC: C09B11/02 ,  C09B67/34 ,  C09B69/06 ,  C09D11/00

    Abstract: Concentrated solutions of basic dyes comprise a salt of a basic dye with a water-soluble carboxylic acid and an anhydrous or water-containing solvent miscible in all proportions with water and selected from polyhydric alcohols and esters and ethers thereof, polyethers, amides, lactones, nitriles, dimethyl sulphoxide, tetrahydrofuran and dioxan. The dye solutions may be used to make non-drying inks by dilution with, e.g. ethylene glycol, for use in self-recording instruments, stamp-pads and typewriter ribbons. The dye solutions may contain excess, e.g. 1.5 to 2 times the stoichiometric equivalent, of water-soluble acid and may also contain water up to 50% by weight of the solvent. The solutions may contain 20-80% by weight of basic dye, the preferred dyes being from the diarylmethane, triarylmethane and diazapolymethine series. Specified acids are fromic, acetic, propionic, maleic and lactic acids. Numerous solvents are specified the preferred ones being ethylene glycol, diethylene glycol monoethyl ether, propylene glycol, dipropylene glycol, formamide and dimethylformamide. The preferred method of preparing the dye solutions comprises dissolving the carbinol base of the basic dye, which may still be water-wet, in a mixture of water-soluble acid and said solvent. Specifications 808,308 and 865,965 are referred to.ALSO:Concentrated solutions of basic dyes comprise a salt of a basic dye with a water-soluble carboxylic acid and an anhydrous or water-containing solvent miscible in all proportions with water and selected from polyhydric alcohols and esters and ethers thereof, polyethers, amides, lactones, nitriles, dimethyl sulphoxide, tetrahydrofuran and dioxan. The dye solutions may be employed to dye paper, leather and textiles including polyacrylonitrile fibres. The dye solutions may be used to make non-drying inks by dilution with, e.g. ethylene glycol, for use in self-recording instruments, stamp-pads and typewriter ribbons. The dye solutions may contain excess, e.g. 1.5 to 2 times the stoichiometric equivalent, of water-soluble acid and may also contain water up to 50% by weight of the solvent. The solutions may contain 20-80% by weight of basic dye, the preferred dyes being from the diarylmethane, triarylemethane and diazapolymethine series. Specified acids are formic, acetic, propionic, maleic and lactic acids. Numerous solvents are specified the preferred ones being ethylene glycol, diethylene glycol monoethyl ether, propylene glycol, dipropylene glycol, formamide and dimethylformamide. The preferred method of preparing the dye solutions comprises dissolving the carbinol base of the basic dye, which may still be water-wet, in a mixture of water-soluble acid and said solvent. Specifications 808,308 and 865,965 are referred to.

    8.
    发明专利
    未知

    公开(公告)号：FR1217382A

    公开(公告)日：1960-05-03

    申请号：FR787159

    申请日：1959-02-19

    Applicant: BASF AG

    Inventor： SEIBERT WALTER

    IPC: C01B31/26

Patent Agency Ranking