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    25.
    发明专利
    未知

    公开(公告)号：NO177408B

    公开(公告)日：1995-05-29

    申请号：NO900867

    申请日：1990-02-23

    Applicant: BASF AG

    Inventor： HUEMMER WOLFGANG ,  DOBLER WALTER ,  LITTMANN DIETER

    IPC: G03F7/004 ,  G03F7/027 ,  G03F7/031 ,  G03F7/032 ,  G03F7/038

    Abstract: Photosensitive recording element containing at least one photopolymerisable recording layer (B) composed of… b1) at least one partially or virtually completely hydrolysed poly(vinylalcohol alkane carboxylate) and/or at least one partially or virtually completely hydrolysed vinyl alcohol alkane carboxylate/alkylene oxide graft copolymer as binder,… b2) at least one photopolymerisation initiator,… b3) at least one photopolymerisable olefinically unsaturated compound (monomer) which is compatible with the binder (b1), and/or photopolymerizable olefinically unsaturated radicals which are linked laterally and/or terminally to the binder (b1), and… b4) at least two auxiliaries, the photopolymerizable recording layer (B) containing, as auxiliaries (b4), at least the sensitometric regulator (b4) composed of… b4.1) at least one compound from the class comprising the isoalloxazines and/or the class comprising the alloxazines, and also… b4.2) the potassium salt of N-nitrosocyclohexyl hydroxylamine, N-nitrosodiphenylamine and/or the monomethyl ether of hydroquinone in an amount of 0,01 to 6% by weight of the photopolymerizable recording layer (B), the (b4.1):(b4.2) weight ratio being 1:2 to 1:1000.

    26.
    发明专利
    未知

    公开(公告)号：FI900510A0

    公开(公告)日：1990-02-01

    申请号：FI900510

    申请日：1990-02-01

    Applicant: BASF AG

    Inventor： HUEMMER WOLFGANG ,  DOBLER WALTER ,  LITTMANN DIETER

    IPC: G03F7/004 ,  G03F7/027 ,  G03F7/031 ,  G03F7/032 ,  G03F

    Abstract: Photosensitive recording element containing at least one photopolymerisable recording layer (B) composed of… b1) at least one partially or virtually completely hydrolysed poly(vinylalcohol alkane carboxylate) and/or at least one partially or virtually completely hydrolysed vinyl alcohol alkane carboxylate/alkylene oxide graft copolymer as binder,… b2) at least one photopolymerisation initiator,… b3) at least one photopolymerisable olefinically unsaturated compound (monomer) which is compatible with the binder (b1), and/or photopolymerizable olefinically unsaturated radicals which are linked laterally and/or terminally to the binder (b1), and… b4) at least two auxiliaries, the photopolymerizable recording layer (B) containing, as auxiliaries (b4), at least the sensitometric regulator (b4) composed of… b4.1) at least one compound from the class comprising the isoalloxazines and/or the class comprising the alloxazines, and also… b4.2) the potassium salt of N-nitrosocyclohexyl hydroxylamine, N-nitrosodiphenylamine and/or the monomethyl ether of hydroquinone in an amount of 0,01 to 6% by weight of the photopolymerizable recording layer (B), the (b4.1):(b4.2) weight ratio being 1:2 to 1:1000.

    27.
    发明专利
    未知

    公开(公告)号：DK228988A

    公开(公告)日：1988-10-31

    申请号：DK228988

    申请日：1988-04-27

    Applicant: BASF AG

    Inventor： DOBLER WALTER ,  PAUST JOACHIM

    IPC: C07B61/00 ,  C07H3/02

    Abstract: Continuous process for the epimerisation of pentoses and hexoses by heating a sugar dissolved in a solvent in the presence of a basic anion exchanger loaded with a molybdenum(VI) compound, which is characterised in that, for the preparation of a D- or L-sugar with cis-OH groups in the 2- and 3-position of the sugar, a homogeneous solution of the corresponding sugar with trans-OH groups in the 2- and 3-position of the sugar is passed continuously in a mixture of water and methanol or ethanol at temperatures from 70 to 100 DEG C, preferably 73 to 80 DEG C, through a reaction tube which contains the basic anion exchanger loaded with the molybdenum(VI) compound. This process is particularly suitable for the epimerisation of D-arabinose to the D-ribose needed for the preparation of riboflavin.

    29.
    发明专利
    未知

    公开(公告)号：AT372315T

    公开(公告)日：2007-09-15

    申请号：AT03778290

    申请日：2003-10-28

    Applicant: BASF AG

    Inventor： DOBLER WALTER ,  BAHR NICOLAUS ,  BREUER KLAUS ,  KINDLER ALOIS

    IPC: C07C45/54 ,  C07C45/74 ,  C07C49/203 ,  C07C403/16

    Abstract: The invention relates to a continuous process for producing pseudoionones of general formulas (I) and (I') as well as isomers thereof, whereby: R 1 represents CH 3 or (a); R 2 and R 3 represent hydrogen, CH 3 or C 2 H 5 , and; R 4 and R 5 represent hydrogen or CH 3 . These pseudoionones are produced by reacting an aldehyde of formula (II) with an excess of a ketone of general formula (III), whereby R 1 , R 2 and R 3 have the aforementioned meanings, in the presence of water and alkali hydroxide at an increased temperature and in a homogeneous solution. The inventive process is characterized in that: a) the intermixing of the homogeneous solution consisting of aldehyde, ketone and aqueous alkali lye occurs at a temperature ranging from 10 to 120° C.; b) the undissolved water and alkali hydroxide contained in the reaction mixture are subsequently separated out; c) while avoiding back mixing, the homogeneous reaction mixture is then guided through a reactor, which permits a residence time ranging from 2 to 300 minutes, at a temperature that is 10 to 120° C. higher than the boiling point of the lowest-boiling component and under a vapor pressure p ranging from 10 6 to 10 7 Pa; d) the reaction mixture is cooled by expansion; e) ketone is removed from the reaction mixture using vapor flowing in the opposite direction and; f) the raw product is dried and rid from excessive aldehyde and secondary components via a rectification column.

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