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    Manufacture of a water-insoluble monoazo-dyestuff of the 2-(2:3-hydroxynaphthoylamino)-naphthalene series
    64.
    发明专利
    Manufacture of a water-insoluble monoazo-dyestuff of the 2-(2:3-hydroxynaphthoylamino)-naphthalene series 未知

    公开(公告)号：GB840804A

    公开(公告)日：1960-07-13

    申请号：GB3536656

    申请日：1956-11-19

    Applicant: HOECHST AG

    Inventor： FICKEL PERCY ,  RIBKA JOACHIM

    IPC: C09B29/20

    Abstract: 2-Ethyl-5-nitroaniline is made by nitrating 2-ethylaniline in concentrated sulphuric acid. Specification 210,463 is referred to.ALSO:The invention comprises the red water-insoluble dyestuff obtainable by diazotising 2-ethyl-5-nitroaniline and coupling with 2-(21, 31-hydroxynaphthoylamine)-naphthalene. Coupling may be effected in substance, on the fibre or on a substratum. Vegetable fibres e.g. regenerated cellulose, silk and synthetic fibres such as acetyl-cellulose and polyamide fibres, may be dyed. Examples are provided of the preparation of the dyestuff and its use in dyeing and printing processes. Specification 210,463 is referred to.

    DISAZO PIGMENT, PROCESS FOR PREPARING IT AND ITS USE
    66.
    发明专利
    DISAZO PIGMENT, PROCESS FOR PREPARING IT AND ITS USE 未知

    公开(公告)号：CA1031771A

    公开(公告)日：1978-05-23

    申请号：CA190486

    申请日：1974-01-18

    Applicant: HOECHST AG

    Inventor： RIBKA JOACHIM ,  RIEPER WOLFGANG ,  SCHWERIN SIEGFRIED

    IPC: C09D7/00 ,  C09B33/153 ,  C09B35/08 ,  C09B67/10 ,  C09D7/12

    Abstract: A form of the disazo pigment C.I. 20040 having the formula 30% of +TR IS SHOWN HAVING IMPROVED COVERING POWER, IMPROVED FLUIDITY IN LACQUER SYSTEMS AND HIGH LUSTER, WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 10 - 20, PREFERABLY 12 - 17 M2/G AND A MAXIMUM IN GRAIN DIAMETER DISTRIBUTION BETWEEN 500 AND 1000 NM, AT LEAST 30 % OF ALL GRAINS HAVING A DIAMETER OF FROM 500 TO 1000 NM AND LESS THAN 25% OF ALL GRAINS HAVING A DIAMETER OR MORE THAN 1000 NM. This new pigment is obtained by isolating the pigment, after coupling, by stirring it out with alkali and, after having filtered it off and washed until neutrality, heating it to temperatures above 100 DEG C with an organic solvent which is immiscible with water or miscible with water to a limited degree only.

    MONOAZO PIGMENTS AND PROCESS FOR PREPARING THEM
    69.
    发明专利
    MONOAZO PIGMENTS AND PROCESS FOR PREPARING THEM 未知

    公开(公告)号：CA996550A

    公开(公告)日：1976-09-07

    申请号：CA161616

    申请日：1973-01-19

    Applicant: HOECHST AG

    Inventor： LAUBERT GUNTER ,  RIBKA JOACHIM

    IPC: C08K5/00 ,  C09B29/20 ,  C09B63/00

    Abstract: Monoazo pigments of the general formula WHEREIN X is hydrogen or halogen, preferably chlorine or bromine, alkyl, alkoxy, trifluoromethyl, phenyl, phenoxy or cyano, Y represents hydrogen or halogen, preferably chlorine or bromine, alkyl, alkoxy, carbomethoxy, phenyl or phenoxy, Z represents hydrogen, chlorine or bromine, alkyl, alkoxy, nitro, cyano, trifluoromethyl, methylsulfonyl, aminocarbonyl, alkylaminocarbonyl, phenylaminocarbonyl, aminosulfonyl, alkylaminosulfonyl, alkanoylamino or aroylamino, A represents a phenyl or naphthalene ring, n represents 1 or 2, m is an integer of from 1 to 3 and Me is an equivalent of a metal cation forming a lake and a process for preparing them by diazotizing aromatic amines of the general formula with coupling components of the general formula AND SUBSEQUENTLY CONVERTING INTO A LAKE WITH METAL SALTS, X,Y,Z,A, n and m having the above meaning. These pigments can be successfully used for dyeing all materials usually dyed with pigments. They are especially suitable for coloring high molecular plastics such as PVC and on account of their excellent resistance to heat, for coloring polyolefins.

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