中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

20 records (took 0.02 seconds)

    Nitrobenzoates of basic dyes
    14.
    发明专利
    Nitrobenzoates of basic dyes 未知

    公开(公告)号：GB1095086A

    公开(公告)日：1967-12-13

    申请号：GB3510666

    申请日：1966-08-05

    Applicant: BASF AG

    Inventor： ANDREE FRANZ ,  KOHL KARL ,  RIEDEL GUENTHER

    IPC: C09B11/02 ,  C09B69/06

    Abstract: The invention comprises nitrobenzoates of basic dyes of the diphenylmethane, triphenylmethane, xanthene or oxazine series which are soluble in alcohols but practically insoluble in water. They are obtained by adding nitrobenzoic acid or a salt thereof during or after the preparation of a composition containing a commercial basic dye of the said series. Examples are given for the production of the salts. The products are suitable for the production of printing inks and examples are given for the production of such inks using various dyes and a resin solution of 23 parts shellac, 70 parts alcohol and 7 parts ethyl glycol.

    Process for the production of fluorubin
    16.
    发明专利
    Process for the production of fluorubin 未知

    公开(公告)号：GB926245A

    公开(公告)日：1963-05-15

    申请号：GB3133961

    申请日：1961-08-31

    Applicant: BASF AG

    Inventor： DEUSCHEL WERNER ,  RIEDEL GUENTHER

    IPC: C09B57/00

    Abstract: 2-Amino-3-chloro-quinoxaline is made by passing dry ammonia gas through 2:3-dichloroquinoxaline in N-methylpyrrolidone at 140-143 DEG C. 2-Amino-3:6-dichloroquinoxaline is similarly prepared from 2:3:6-trichloroquinoxaline.ALSO:Fluorubin and its substitution products containing halogen atoms and/or alkyl radicals of 1 to 4 carbon atoms in the 1 to 4 and 8 to 11 positions are made by heating 2-amino-3-chloroquinoxaline or an appropriate substitution product thereof to a temperature from 140 DEG to 300 DEG C. An organic solvent such as dimethyl formamide, N-methyl- or N-ethyl-pyrrolidone-(2) or -piperidone-(2), di- or tri-chlorobenzene, nitrobenzene, methylnaphthalene, diphenyl or diphenyl oxide and an acid-binding agent such as sodium or potassium carbonate may be present. The 2-amino-3-chloroquinoxaline may be formed from 2:3-dichloroquinoxaline and heated in situ. Examples are given. The products are yellow pigments for varnishes and printing inks.

    Production of fluorubin
    18.
    发明专利
    Production of fluorubin 未知

    公开(公告)号：GB1008467A

    公开(公告)日：1965-10-27

    申请号：GB4558061

    申请日：1961-12-20

    Applicant: BASF AG

    Inventor： DEUSCHEL WERNER ,  VILSMEIER WOLFGANG ,  RIEDEL GUENTHER

    IPC: C09B17/00

    Abstract: Fluorubin and fluorubins containing substituents or fused aromatic rings are made by heating to temperatures of about 140 DEG to 400 DEG C. (a) 2: 3-diaminoquinoxaline, (b) a 2: 3-diaminoquinoxaline substituted in the benzene nucleus, (c) a 2: 3-diaminoquinoxaline having fused aromatic rings or (d) a 2: 3-diaminoquinoxaline substituted on an amino group by a 2-aminoquinoxalinyl-(3) radical, if desired in the presence of an organic diluent and an acid catalyst. In processes (b) and (c) unsymmetrical products or mixtures of symmetrical and unsymmetrical products may be obtained. Mixtures of two different 2: 3-diaminoquinoxalines or an unsymmetrical di-(3-amino-2-quinoxalinyl)-amine may be used. In processes (a), (b) and (c) the starting material may be heated first to 100 DEG to 140 DEG C. to convert it to a di - (3 - amino - 2 - quinoxalinyl) - amine and then cyclized by heating to 140 DEG to 400 DEG C. Examples are given.ALSO:In an Example (1) a yellow nitrocellulose lacquer is made by milling together nitrocellulose, dibutyl phthalate, ethyl alcohol, ethyl glycol and a pigment of the formula:- ALSO:A diquinoxalinylamine of the formula a mixture of diquinoxalinylamines of the formulae and diquinoxalinylamines of the formula where R is hydrogen, chlorine, bromine, alkyl or alkoxy are made by heating diaminoquinoxalines of the formulae with compounds of the formulae respectively in N : N-dialkylamides or N-alkyllactams in the presence of alkali at 80 DEG to 200 DEG C. In examples, the following pairs of compounds are heated: (5) 2 : 3-diaminoquinoxaline and 2 - chloro - 3 - amino - quinoxaline; (8) 2 : 3-diamino - 6 - methoxy - quinoxaline and 2-chloro - 3 - amino - quinoxaline and (9) 2 : 3-diamino - 6 - chloro - quinoxaline and 2 - chloro-3 - amino - 6 methyl - quinoxaline. Bis - (2 - aminoquinoxalin - 3 - yl) amine is made (5) by heating 2 : 3-aminoquinoxaline with p-toluenesulphonic acid in N-methylpyrrolidone. 2 : 3-Diaminoquinoxalines are made by heating 2 : 3-dichloroquinoxalines with liquid ammonia at 30 DEG to 130 DEG C. under pressure. In Examples: (1) 2: 3-dichloro-quinoxaline and its 6-methyl derivative, (3) 2 : 3-dichloro-5-methyl-quinoxaline and (4) 2 : 3 : 6-trichloroquinoxaline are heated with ammonia. 2-Amino-3-chloro-quinoxalines are made by treating 2 : 3 - dichloro - quinoxalines with liquid ammonia at -10 DEG to +30 DEG C. under pressure. In an Example, (5) 2 : 3-dichloro-quinoxaline is so treated.

Patent Agency Ranking