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    Aliphatic per:fluoro-ketone(s) prepn. - from per:fluoro-carboxylic acid salt and per:fluoro-acyl fluoride, useful as heat transfer media or lubricant
    23.
    发明专利
    Aliphatic per:fluoro-ketone(s) prepn. - from per:fluoro-carboxylic acid salt and per:fluoro-acyl fluoride, useful as heat transfer media or lubricant 未知

    公开(公告)号：DE2648123A1

    公开(公告)日：1978-04-27

    申请号：DE2648123

    申请日：1976-10-23

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR ,  KLUGE FRIEDHELM DR

    IPC: C07D319/12 ,  C07C49/175 ,  C07C45/205 ,  C07C49/16

    Abstract: Aliphatic perfluoroketones (I) are prepd. by reacting a perfluorocarboxylic acid salt R1-CO2M (II) with a perfluoroacyl fluoride R2-CO-F (III) in a polar aprotic solvent at 20-200 degrees C. In the formulae M is Li, Na, K, Rb, Cs or Ag; R1 is 2-50C perfluoroalkyl opt. contg. ether-O-function(s) R2 is 1-50C perfluoroalkyl opt. contg. ether-O-function(s). (II) may be prepd. from R1COF and a salt of formic or oxalic acid or of a Gp. IIIA to VIIA element oxyacid which is less strong than CF3CO2H, esp. M2CO3. Prepn. is in a polar aprotic solvent at 20-200 degrees C. Alternatively a mixt. of (II) and (III) may be prepd. from (R1CO)2O and an alkali metal fluoride. Perfluorolefins (which are difficult to obtain) are not used. High boiling (I) may be prepd. (I) are inert to acids, oxidants and heat. They may be used as heat transfer media or lubricants. In an example perfluoro-2,4-bis-(3,6-dimethyl-1,4-dioxanyl-2-oxylpentan-3-one was prepd. from potassium perfluoro- alpha-(3,6-dimethyl-1,4-dioxanyl-2-oxylpropionate and the corresp. perfluoroacyl fluoride in tetraglyme.

    Prepn. of (2,3,3,3)-tetrafluoro-propionic acid - from hexafluoro-propene and water
    24.
    发明专利
    Prepn. of (2,3,3,3)-tetrafluoro-propionic acid - from hexafluoro-propene and water 未知

    公开(公告)号：DE2555898A1

    公开(公告)日：1977-06-23

    申请号：DE2555898

    申请日：1975-12-12

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR ,  FRANZ RAIMUND DR

    IPC: C07C51/00 ,  C07C53/34 ,  C07C31/34

    Abstract: Prepn. of 2,3,3,3-tetrafluoropropionic acid (I) comprises reacting hexafluoropropene (II) with H2O at 30-200 degrees C in the presence of a tert. amine. The resulting salt is then converted to the free acid. The reaction is pref. effected using a 2-to 5-fold excess of H2O in a polar aprotic solvent. The tert. amine (esp. NEt3 or pyridine) is pref. used in an amt. of >=0.1 mole per mole of (II). The salt is isolated by distilling off volatile components and is converted into the free acid by adding a nonvolatile strong acid (esp. H2SO4). The free acid is then distd. off. (I) is useful as a solvent, an intermediate for polymerisable perfluoroacrylic cpds., and an intermediate for inhalation narcotics. The use of (I) for the prepn. of 2,3,3,3-tetrafluoropropanol is claimed. The process is simpler than those described in US 2795601 and 2862024.

    25.
    发明专利
    未知

    公开(公告)号：DE2531511A1

    公开(公告)日：1977-02-03

    申请号：DE2531511

    申请日：1975-07-15

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR

    IPC: C07C41/00 ,  C07C43/12 ,  C07C67/00 ,  C07D319/12

    Abstract: Process for preparing perfluorinated ethers by exposing perfluorocarbonyl compounds of the formula wherein R1 and R2 mean identical or different perfluoroalkyl radicals optionally containing one or several ether-like bound oxygen atoms to light rays having a wave length of from 100 to 600 m.mu., in a liquid phase, and the compounds thus prepared.

    26.
    发明专利
    未知

    公开(公告)号：DE2517357A1

    公开(公告)日：1976-10-28

    申请号：DE2517357

    申请日：1975-04-19

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR

    IPC: C07D319/12 ,  H01B3/24

    Abstract: Perfluorinated vinyl ethers are prepared by reacting a fluorinated carboxylic acid fluoride with hexafluoropropylene epoxide in the presence of a catalyst and thereafter pyrolyzing the carboxylic acid fluoride containing ether linkages, optionally after having converted it into a salt of a monovalent metal. They are useful as intermediates in the production of saturated fluorinated ethers which may be used as heat transferring agents, dielectric agents, lubricants and solvents.

    27.
    发明专利
    未知

    公开(公告)号：DE2461445A1

    公开(公告)日：1976-07-08

    申请号：DE2461445

    申请日：1974-12-24

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR

    IPC: C07C51/00 ,  C07C51/58 ,  C07C51/62 ,  C07C59/135 ,  C07C67/00 ,  C07D319/12 ,  C07C53/36

    Abstract: Perfluoro carbonyl compounds react with hexafluoro propene epoxide in the presence of dimethylamino-difluoro-phosphorane producing perfluorinated carboxylic acid fluorides with ether linkages. Among the carbonyl compounds which can be used are perfluorinated ketones, acid fluorides of the formula RF - COF and RF - OCF(CF3) - COF (RF being a perfluoro-alkyl radical having from 1 to 4 carbon atoms) and perfluoro-2-oxo-3,6-dimethyl-1,4-dioxane.

    28.
    发明专利
    未知

    公开(公告)号：DE19607046A1

    公开(公告)日：1997-08-28

    申请号：DE19607046

    申请日：1996-02-24

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR ,  ROTHE PETRA DR ,  ZIRKENBACH GERHARD

    IPC: D06L3/00 ,  C08K5/00 ,  C08K5/3475 ,  C08K5/353 ,  C08L23/04 ,  C08L27/06 ,  C08L31/04 ,  C08L101/00 ,  C11D3/42 ,  D06L3/12 ,  D06L4/65 ,  C08J3/20 ,  C08J3/22

    Abstract: - Mixtures of optical brighteners contain (a) bisbenzoxazolyl(s) of formula (I) and/or 7-naphthoÄ1,2-dÜtriazol-2-yl-3-phenyl-coumarin of formula (II) and (b) beta -(benzoxazol-2-yl)-styrene(s) and/or 4-(benzoxazol-2-yl)-stilbene(s) of formula (III) as brighteners; in which R , R = hydrogen (H), 1-10 carbon (C) alkyl or carbo-(1-4 C)-alkoxy; X = 1,4-naphthylene, 2,5-thiophene or 2,5-furan; R = H, halogen, 1-4 C alkyl or phenyl in the 5-position and R = H; or R , R = methyl (Me) in the 5- and 6- or 5- and 7-position; n = 0 or 1; B = cyano, carbo-(1-4 C)-alkoxy or a group of the formulae; R = 1-6 C alkyl, 1-8 C cycloalkyl, 1-4 C alkoxy-(1-4 C)-alkyl, hydroxy-(1-4 C)-alkyl or -(CH2CH2O)n-R'; n = 2 or 3; R' = H or 1-4 C alkyl; R = phenyl, halophenyl, 1-4 C alkylphenyl or 1-4 C alkoxyphenyl; R = 1-4 C alkyl; R - cyano or carbo-(1-4 C)-alkoxy.

    29.
    发明专利
    未知

    公开(公告)号：BR9200175A

    公开(公告)日：1992-10-06

    申请号：BR9200175

    申请日：1992-01-21

    Applicant: HOECHST AG

    Inventor： MARTINI THOMAS DR ,  MEES BERNHARD DR ,  OPPITZ PETER

    IPC: C09B67/42 ,  C09B67/46 ,  C09K23/00 ,  C09K23/42 ,  C09K23/44 ,  C09K23/52 ,  B01F17/42

    Abstract: The invention relates to dispersing agents based on a mixture of at least one compound of the formula 1 in which Ar is benzene or naphthalene, X is -CH2-CH2- and/or -CH2-CH(CH3)-, 0 to (m-1) of the radicals A are hydrogen, 1 to m of the radicals A are benzoyl and/or naphthoyl, 1 to m of the radicals A are -CO-CM=CH-COOM and/or -CO-CH2-CH(SO3M)-COOM, M being a cation, R , R and R are hydrogen and/or alkyl having 1 to 14 carbon atoms, R is hydrogen and/or alkyl having 1 to 9 carbon atoms, n is a number from 1 to 150 and m is a number from 2 to 12, with compounds of the formula 2 in which R and R independently of one another are an alkyl group from methyl to butyl and are in the m-position relative to the hydroxyl group, R is hydrogen or methyl and Me is a cation, especially a proton or an alkali metal cation, alkaline earth metal cation or ammonium cation, and x and y are the numbers 0, 1 and 2, the total of these numbers being at least 1. The dispersing agents according to the invention are suitable for preparing dispersions of dyes, pigments, plant protection agents and pesticides and for preparing dyeing baths, padding baths and pastes for paper printing and textile printing.

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