中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

43 records (took 0.024 seconds)

    Process for the preparation of mono- or dibromofluoranthene
    11.
    发明专利
    Process for the preparation of mono- or dibromofluoranthene 未知

    公开(公告)号：DE3209426A1

    公开(公告)日：1982-10-07

    申请号：DE3209426

    申请日：1982-03-16

    Applicant: BASF AG

    Inventor： PATSCH MANFRED DIPL CHEM DR ,  FLOHR HELMUT DIPL CHEM DR

    IPC: C07C17/12 ,  C07C25/22

    Abstract: A process for the preparation of monobromofluoranthene, dibromofluoranthene or their mixtures by bromination of fluoranthene in water or a mixture of water and a water-immiscible inert solvent, if appropriate in the presence of surface-active agents. According to the process, mono- or dibromofluoranthene or mixtures thereof are obtained which are virtually free of by-products. The process products can be used without further purification for the preparation of vat dyes.

    Ortho:benzyl-toluene prodn. from xylyl halide and benzene - using alumino-silicate catalyst is simple, cheap and efficient
    15.
    发明专利
    Ortho:benzyl-toluene prodn. from xylyl halide and benzene - using alumino-silicate catalyst is simple, cheap and efficient 未知

    公开(公告)号：DE2547030A1

    公开(公告)日：1977-05-05

    申请号：DE2547030

    申请日：1975-10-21

    Applicant: BASF AG

    Inventor： NESTLER GERHARD DIPL CHEM DR ,  PLATZ ROLF DIPL CHEM DR ,  MERGER FRANZ DIPL CHEM DR ,  BAUR KARL GERHARD DIPL CHEM DR ,  PATSCH MANFRED DIPL CHEM DR ,  JACOBSEN THEODOR DIPL CHEM DR

    IPC: C07C2/86 ,  C07C17/26 ,  C07C25/18 ,  C07C15/16

    Abstract: Prodn. of o-benzyltoluenes (I) of the formula A-B (in which A has the formula and B has the formula the R gps. are independently H or halogen and The R' gps. H, halogen or aliphatic or aromatic gps.) involves reacting o-xylyl halides (II) of the formula A-X (in which X is halogen) with benzenes (III) of the formula H-B in the presence of O-contg. cpds. (IV) of Al and Si. Reaction can be carried out (dis)continuously at 50-250 degrees C and press. up to 15 bar. It is pref. to operate without a solvent. (IV) pref. is an aluminosilicate with 1-95 mole Al2O3 per mole SiO2 and is used in amt. of 0.1-15 wt.% w.r.t. (II). (I) are valuable starting materials for the prodn. of anthracene, anthraquinone and their derivs. The process is simple and cheap, free from trouble and corrosion problems and gives (I) in good yields and purity, even at low reaction temps. Readily available starting materials are employed and no multistage syntheses are need for their prodn. The formation of sulphonation prods. is avoided and the protection of the environment is improved. In an example an o-benzylchlorotoluene isomer mixt. was obtd. in 87% yield from chloro-o-xylyl chlorides and benzene by heating 4 hrs. at 145 degrees C and 11 bar in the presence of Al silicate (10 wt.% Al2O3).

    Pyrazolo triazolyl benzofuran optical brighteners - prepd. by cyclisation methods and used for natural and synthetic fibres
    16.
    发明专利
    Pyrazolo triazolyl benzofuran optical brighteners - prepd. by cyclisation methods and used for natural and synthetic fibres 未知

    公开(公告)号：DE2529688A1

    公开(公告)日：1977-01-27

    申请号：DE2529688

    申请日：1975-07-03

    Applicant: BASF AG

    Inventor： PATSCH MANFRED DIPL CHEM DR

    IPC: C07D231/38 ,  C09B29/01 ,  C09B29/48 ,  C07D487/04 ,  C07D405/04 ,  D06L3/12

    Abstract: New pyrazolotriazolylbenzofurans have formula (I) (where A and R are each H, opt. substd. alkyl or Ph. R1, R2 and R4 are H, Cl, Br, CF3, COOH, hydroxylsulphonyl, 1-4C-alkylsulphonyl, phenylsulphonyl, 1-4C alkyl, 1-4C alkoxy, 1-4C alkoxycarbonyl, beta-hydroxy-2-3 C-alkyl, opt. mono- or di-substd. carbamoyl or sulphamoyl. In disubstd. derivs, the 2 substituents can be linked via amide-N to form a ring. R3 is H, 1-4C alkyl or Ph). Use of (I) as optical brighteners is claimed. (I) are colourless, fluorescing cpds. useful as optical brighteners for natural and synthetic fibres, e.g. for acrylonitrile polymers, polyamides and esp. polyestes. They can be used for bulk-brightening. (I) are fast to light and have good covering power. Pref. R4 is H; R3 is H or CH3; R' is H and R2 is H, CN or 1-4C alkoxycarbonyl. In an example, (I; A is H; R is phenyl; R4 is H; R3 is CH3; R' is H and R2 is 2-CN) is prepd. by ring-closure of cpd. (Ila).

    Fluorescent dyes of coumarin series - contg. thiadiazolyl gps. for use on synthetic fibres
    17.
    发明专利
    Fluorescent dyes of coumarin series - contg. thiadiazolyl gps. for use on synthetic fibres 未知

    公开(公告)号：DE2529434A1

    公开(公告)日：1977-01-13

    申请号：DE2529434

    申请日：1975-07-02

    Applicant: BASF AG

    Inventor： PATSCH MANFRED DIPL CHEM DR ,  VAMVAKARIS CHRISTOS DIPL CHEM

    IPC: C09B57/02 ,  C09B57/00

    Abstract: Dyes of coumarin series are of formula (I): Z = opt. substd. alkyl, cycloalkyl, aralkyl, aryl or heteroaryl. Z1 and Z2 are H or opt. substd. alkyl, cycloalkyl, aralkyl or aryl, or together form part of a heterocyclic ring, or each with the N atom form a satd., opt. substd. 5- or 6-member condensed ring in oposition to the N atom. X = O or NH. (I) are used for dyeing of polyamide, cellulose ester, acrylonitrile polymer and esp. polyester textiles, or mass dyeing of plastics in fluorescent yellow-green shades. The readily-sublimed dyes are also suitable for transfer printing. (I) have high colour strength, giving shades with good fastness to light and thermofixing. In an example, 7 pts. 4-diethylamino salicylaldehyde in 50 vols. isopropanol are refluxed for 15 mins. with 9 pts. 2- 5'-phenyl thiadiazolyl-(2') acetic acid ethyl ester and 2 vols. pyrrolidine, 10 pts. dye of formula (I) with Z = phenyl, X = O, Z1 and Z2 = methyl, are obtained.

Patent Agency Ranking