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    Production of sodium bicarbonate
    13.
    发明专利
    Production of sodium bicarbonate 未知

    公开(公告)号：GB1064558A

    公开(公告)日：1967-04-05

    申请号：GB1000966

    申请日：1966-03-08

    Applicant: BASF AG

    Inventor： SCHMITT KARL OTTO ,  HANSEN GUENTER ,  MUELLER HANS

    IPC: C01D7/08 ,  C01D7/18

    Abstract: A process for the production of NaHCO3 and NH4Cl by reaction of NH3 and CO2 in a mother liquor containing NaCl comprises adding all the required NH3 to the liquor but only sufficient CO2 to saturate the liquor, at not more than 60 DEG C., with NaHCO3; introducing the liquor to a second stage at not more than 35 DEG C. and adding the rest of the CO2, precipitating and separating the NaHCO3 without cooling, dissolving fresh NaCl in the liquor, cooling to precipitate NH4Cl, separating and recycling the liquor to the first stage. The process of the invention reduces encrustation of NaHCO3 on the apparatus.

    New monoazo dyes and processes for their production
    16.
    发明专利
    New monoazo dyes and processes for their production 未知

    公开(公告)号：GB1003946A

    公开(公告)日：1965-09-08

    申请号：GB4865063

    申请日：1963-12-10

    Applicant: BASF AG

    Inventor： DEHNERT JOHANNES ,  HANSEN GUENTER

    IPC: C09B26/02 ,  C09B26/04 ,  C09B29/32 ,  C09B44/00 ,  C09B44/16

    Abstract: The invention comprises dyes of formula R1 is an ortho-phenylene radical condensed with the hetero ring in the manner indicated by the valance lines, which may be substituted and which is free from ionogenic water-solubilizing groups, R2 is a hydrogen atom or an alkyl or aryl group, R3 is a hydrogen atom or an alkyl group, X is a cyano, carbonamido-substituted carbonamido or carboxyl group and R4 is a benzene radical containing only one nitro group, which is in o-position to the azo group and if desired further substituents but is free from ionogenic water-solubilizing groups. When R2 is a hydrogen atom the dyes of the above formula are tautomeric with the corresponding hydrazone from, i.e. The dyes are prepared by coupling a diazotized o-nitroaniline with a suitable benzimidazole and when R2 is a hydrogen atom the dyes may be alkylated. The dyes may be used to dye and print mordanted cotton, leather, cellulose ester and ether, polyamide, polyester and polyurethane materials in yellow and orange shades. Examples describe the preparation of the dyes by coupling process.ALSO:1,3 - dimethyl - 2 -carboxylicamidomethylenebenzimidazoline is prepared by treating 1,3-dimethyl - 2 - cyanomethylenebenzimidazoline with 96% sulphuric acid at below 25 DEG C. for 2 hours, mixing with ice and neutralising with caustic soda.

    New heterocyclic dyes
    17.
    发明专利
    New heterocyclic dyes 未知

    公开(公告)号：GB972955A

    公开(公告)日：1964-10-21

    申请号：GB1028463

    申请日：1963-03-15

    Applicant: BASF AG

    Inventor： DEHNERT JOHANNES ,  HANSEN GUENTER

    IPC: C09B23/16 ,  C09B29/033

    Abstract: The invention comprises dyes of formula wherein Z is a divalent radical which may contain one or more hetero atoms, necessary for the completion of a 5- or 6-membered ring which may bear fixed rings and may be substituted, R1 is a hydrogen atom or an alkyl radical which may be substituted, a cyclohexyl, benzyl or phenyl radical, R2 is an alkyl radical which may be substituted, A is a divalent radical completing a substituted or unsubstituted 5- or 6-membered mono- or poly-nuclear heterocyclic ring system, X is a formly, carboxylic acid, carboxylic acid ester, carboxylic acid hydrazide, a substituted or unsubstituted carboxylic acid amide, a carboxylic thioamide group or an acyl group of an aliphatic or aromatic carboxylic acid, E is the equivalent of an anion, m is 1 or 2 and n is 1 or 2. The dyes are prepared by (a) coupling a diazo compound of an amine of formula with a heterocyclic methylene compound of formula or (b) reacting a hydrazone of formula with a heterocyclic methylene compound as specified above in the presence of a dehydrogenating or oxidizing agent. The dyes so prepared may be subsequently alkylated. The dyes may be used to colour mordanted cotton, leather, cellulose ethers and esters, polyamides, polyurethane, polyester and, in particular, polyacrylonitrile materials in yellow and red shades. In examples, dyes wherein the ring is a benzthiazole, thiodiazole, indazole, thiazole or triazole ring and the heterocyclic methylene compound is a benzimidazole, or indoline derivative are specified.

    19.
    发明专利
    未知

    公开(公告)号：BR8301654A

    公开(公告)日：1983-12-13

    申请号：BR8301654

    申请日：1983-03-30

    Applicant: BASF AG

    Inventor： BERGMANN UDO ,  HANSEN GUENTER ,  ZEIDLER GEORG

    IPC: C09B31/00 ,  C09B33/02 ,  C09B33/24 ,  C09B45/24 ,  D06P3/32 ,  C09B33/04 ,  C09B45/00 ,  D06P1/10

    Abstract: Compounds which in the form of the free acid are of the general formula I I where A is a radical of the formula the radicals Y independently of one another are each hydroxyl or amino, X is hydrogen, hydroxysulfonyl or a radical of the formula D-N=N-, R is a radical of 1-aminonaphthalene-4-, -5-, -6-, -7-or -8-monosulfonic acid or of 1-aminonaphthalene-3-6,-, -3,7-, -3,8-, -4,7- or -4,8-disulfonic acid, or a Cu, Fe, Ni, Co, Mn or Cr complex thereof, and D is phenyl which is unsubstituted or substituted by methyl, methoxy,ethoxy, nitro, chlorine, bromine or sulfo, or is sulfo-substituted naphthyl. These compounds are preferably used for dyeing leather.

    20.
    发明专利
    未知

    公开(公告)号：IT7927286D0

    公开(公告)日：1979-11-14

    申请号：IT2728679

    申请日：1979-11-14

    Applicant: BASF AG

    Inventor： NORBERT GRUND ,  HANSEN GUENTER ,  KERMER WOLF DIETER

    IPC: C09B29/09 ,  C09B29/00 ,  C09B29/08 ,  C09B

    Abstract: An azo dye comprising a heterocyclic diazo component, of the general formula I where D is a radical of the formula Y is nitro, chlorine or bromine, Z is hydrogen, chlorine, bromine, cyano or nitro, R1 is C1-C4-alkyl which is unsubstituted or substituted by hydroxyl, C1-C4-alkoxy, cyano, C1-C4-alkanoyloxy, C1-C4-alkoxycarbonyl, C1-C4-alkanoylamino, C1-C4-alkylaminocarbonyloxy, C1-C4-alkoxycarbonyloxy, chlorine, phenyl and/or phenoxy, or is cyclohexyl, propargyl or C3-C5-alkenyl, or is a radical of the formula (A-O)n-R2, R2 is C1-C4-alkyl, phenyl or, if n>1, may also be hydrogen, R3 is C1-C8-alkyl, which may be substituted by phenyl or phenoxy, R4 is hydrogen, methyl, ethyl, methoxy, ethoxy or phenoxy, X is oxygen or a direct bond, A is -CH2CH2-, -CH2CH2CH2-, and n is 1, 2 or 3. The dyes of the formula I are very suitable for dyeing synthetic textile materials, especially polyesters.

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