12.
    发明专利
    未知

    公开(公告)号:DE3876915D1

    公开(公告)日:1993-02-04

    申请号:DE3876915

    申请日:1988-09-17

    Applicant: BASF AG

    Abstract: Prodn. of bisalkoxy-(iso) -violanthrenediones of formula (IA) and (IB) (R = 1-4C alkyl) is carried out by alkylating the corresp. bishydroxy cpds. (II) (R = G) in an organic liq. medium (III) in the presence of alkali metal salts (IV) of weak acids and tert. aliphatic and/or opt. tert. aromatic amines (V) at 100-200 deg.C. The novelty is that (III) is methyl benzoate. Pref. the alkylating agent is dialkyl sulphate, alkyl o- and/or p-toluenesulphonate, alkyl benzenesulphonate and/or dialkyl methanephosphonate. Pref. (IV) is Na2CO2 and/or K2CO3.

    13.
    发明专利
    未知

    公开(公告)号:DE3773811D1

    公开(公告)日:1991-11-21

    申请号:DE3773811

    申请日:1987-09-09

    Applicant: BASF AG

    Abstract: The dye C.I. Vat Blue 16 (C.I. No. 71200), is prepd. by alkylating 16,17-dihydroxy-violanthrene dione-5,10 in a tert. (cyclo)aliphatic amine as solvent, at 100-230 deg.C. Alkylation is pref. in tri-n-butylamine solvent, in presence of alkali metal salts of weak acids, using 2-chloroethyl o- or p-toluene sulphonate, 2-chloroethyl benzene sulphonate and/or 1,2-dibromoethane as alkylating agent.

    14.
    发明专利
    未知

    公开(公告)号:DE3476803D1

    公开(公告)日:1989-03-30

    申请号:DE3476803

    申请日:1984-12-10

    Applicant: BASF AG

    Abstract: Novel furancarboxylic acid derivatives of the general formula where R1, R2 and R3 independently of one another are each hydrogen, C1-C8-alkyl, cyclohexyl or phenyl, but not more than two of these radicals are simultaneously hydrogen, and R4 is a radical of the formula -NR5R6, or OR6, where A is a bridge member, R5 is hydrogen, C2-C6-alkenyl, C5-C7-cycloalkyl or C1-C12-alkyl which may or may not be interrupted by 1, 2 or 3 oxygen atoms, and R6 is a radical of the formula where R7, R8, R9 and R10 are each C1-C4-alkyl, or R7 and R8 or R9 and R10 together form a tetramethylene or pentamethylene bridge, and R11 is hydrogen, C1-C8-alkyl, C3-C8-alkenyl, C2-C4-hydroxyalkyl or aralkyl, and their salts are useful as light stabilizers for organic polymers, in particular olefin polymers.

    16.
    发明专利
    未知

    公开(公告)号:DE3345376A1

    公开(公告)日:1985-06-27

    申请号:DE3345376

    申请日:1983-12-15

    Applicant: BASF AG

    Abstract: Novel furancarboxylic acid derivatives of the general formula where R1, R2 and R3 independently of one another are each hydrogen, C1-C8-alkyl, cyclohexyl or phenyl, but not more than two of these radicals are simultaneously hydrogen, and R4 is a radical of the formula -NR5R6, or OR6, where A is a bridge member, R5 is hydrogen, C2-C6-alkenyl, C5-C7-cycloalkyl or C1-C12-alkyl which may or may not be interrupted by 1, 2 or 3 oxygen atoms, and R6 is a radical of the formula where R7, R8, R9 and R10 are each C1-C4-alkyl, or R7 and R8 or R9 and R10 together form a tetramethylene or pentamethylene bridge, and R11 is hydrogen, C1-C8-alkyl, C3-C8-alkenyl, C2-C4-hydroxyalkyl or aralkyl, and their salts are useful as light stabilizers for organic polymers, in particular olefin polymers.

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