DE198713C - - Google Patents

Info

Publication number
DE198713C
DE198713C DENDAT198713D DE198713DA DE198713C DE 198713 C DE198713 C DE 198713C DE NDAT198713 D DENDAT198713 D DE NDAT198713D DE 198713D A DE198713D A DE 198713DA DE 198713 C DE198713 C DE 198713C
Authority
DE
Germany
Prior art keywords
carboxylic acid
mixture
phenylthioglycol
heating
short time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DENDAT198713D
Other languages
German (de)
Publication of DE198713C publication Critical patent/DE198713C/de
Active legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
    • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • C07D333/68—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D333/70—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 2
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
    • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • C07D333/64—Oxygen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Indole Compounds (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Description

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

/7/ 7 PATENTAMT.PATENT OFFICE. PATENTSCHRIFTPATENT LETTERING - JVl 198713 -KLASSE 12o. GRUPPE - JVl 198713 - CLASS 12o. GROUP Zusatz zum Zusatz-Patente 196016 vom 19. Oktober 1905.Addendum to additional patents 196016 from October 19, 1905. Patentiert im Deutschen Reiche vom 18. Januar 1906 ab. Längste Dauer: 8. Mai 1920.Patented in the German Empire on January 18, 1906. Longest duration: May 8, 1920. Das Patent 196016, Zusatz zum Patent 192075, betrifft ein Verfahren zur Darstellung der 3- Oxy(i)thionaphten-2-carbonsäure, gekennzeichnet durch Erhitzen eines pulverigen Gemisches von Phenylthioglykol-o -carbonsäure mit Ätzalkali.The patent 196016, addition to the patent 192075, relates to a process for the preparation of 3-oxy (i) thionaphthene-2-carboxylic acid, characterized by heating a powdery mixture of phenylthioglycol-o -carboxylic acid with caustic alkali. Es wurde nun gefunden, daß bei dem Verfahren das Erhitzen auch in der Weise vorgenommen werden kann, daß man in das pulverige Gemisch von Phenylthioglykol-ocarbonsäure oder eines ihrer Salze und Ätzalkali für ganz kurze Zeit — es genügen Bruchteile einer Minute — Wasserdampf einleitet. It has now been found that in the process the heating is also carried out in this way can be that one in the powdery mixture of phenylthioglycol-ocarboxylic acid or one of its salts and caustic alkali for a very short time - fractions of a minute are sufficient - introduces steam. Das Gemisch erwärmt sich dadurch zuerst örtlich, die Temperatur steigt von selbst und setzt sich durch die ganze Masse derart fort, daß die Kondensation zu der Oxythionaphtencarbonsäure ganz zu Ende geht. Das Rer aktionsprodukt behält dabei seine pulverige bzw. trockene Beschaffenheit.The mixture first warms up locally, the temperature rises by itself and continues through the whole mass in such a way that the condensation to the oxythionaphtenecarboxylic acid comes to an end. The promotional product retains its powdery or dry texture. 2525th Beispiel. Man mischt 20kg Phenylthioglykol-o-carbonsäure mit 16 kg trockenem gepulvertem Ätznatron in einem Kessel und leitet auf kurze Zeit Wasserdampf ein. Die Reaktionsmasse erwärmt sich dann von selbst weiter, die Temperatur steigt auf i8o° und darüber. Man hält nun bei dieser Temperatur noch kurze Zeit, bis keine Reaktion mehr wahrnehmbar ist.Example. Mix 20kg of phenylthioglycol-o-carboxylic acid with 16 kg of dry powdered caustic soda in a kettle and conducts on steam for a short time. The reaction mass then continues to heat up by itself, the temperature rises to 180 ° and above. It is now held at this temperature for a short time Time until no more reaction is perceptible. Pate ν τ-An Spruch :Godfather ν τ-An saying: Eine Ausführungsform des durch Patent 196016, Zusatz zum Patent 192075, geschützten Verfahrens zur Darstellung der 3-Oxy(i)thionaphten-2-carbonsäure durch Erhitzen eines pulverigen Gemisches von Phenylthioglykol-o-carbonsäure oder eines ihrer Alkalisalze und Ätzalkali, dadurch gekennzeichnet, das man das Erhitzen des Gemisches hier durch kurzes Einleiten von Wasserdampf in das Gemisch bewerkstelligt.An embodiment of the patent 196016, addition to patent 192075, Protected process for the preparation of 3-oxy (i) thionaphten-2-carboxylic acid by heating a powdery mixture of phenylthioglycol-o-carboxylic acid or one of their alkali salts and caustic alkali, characterized in that one is heating the mixture accomplished here by briefly introducing steam into the mixture.
DENDAT198713D Active DE198713C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE198712T

Publications (1)

Publication Number Publication Date
DE198713C true DE198713C (en)

Family

ID=33035719

Family Applications (5)

Application Number Title Priority Date Filing Date
DENDAT198713D Active DE198713C (en)
DE1905192075D Expired - Lifetime DE192075C (en) 1905-05-08 1905-05-08
DE1905198712D Expired - Lifetime DE198712C (en) 1905-08-09 1905-08-09
DE1905196016D Expired - Lifetime DE196016C (en) 1905-10-18 1905-10-18
DE1906232277D Expired - Lifetime DE232277C (en) 1906-11-29 1906-11-29

Family Applications After (4)

Application Number Title Priority Date Filing Date
DE1905192075D Expired - Lifetime DE192075C (en) 1905-05-08 1905-05-08
DE1905198712D Expired - Lifetime DE198712C (en) 1905-08-09 1905-08-09
DE1905196016D Expired - Lifetime DE196016C (en) 1905-10-18 1905-10-18
DE1906232277D Expired - Lifetime DE232277C (en) 1906-11-29 1906-11-29

Country Status (1)

Country Link
DE (5) DE192075C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040016046A1 (en) * 2002-07-26 2004-01-29 Siegal David M. Push-on bolt stabilizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040016046A1 (en) * 2002-07-26 2004-01-29 Siegal David M. Push-on bolt stabilizer

Also Published As

Publication number Publication date
DE232277C (en)
DE192075C (en)
DE196016C (en)
DE198712C (en)

Similar Documents

Publication Publication Date Title
DE198713C (en)
DE201231C (en)
DE744655C (en) Process for the production of confectionery
DE553001C (en) Process for the preparation of acidic wool dyes
DE662088C (en) Process for improving opened starch products
DE763698C (en) Process for the manufacture of catalysts
DE529323C (en) Process for the production of a viscous condensation product from phenol and formaldehyde
DE287743C (en)
DE707847C (en) Process for the production of thickeners for fabric printing from cherry gum
DE407945C (en) Process for making dry iron gall ink
DE746692C (en) Storage or shipping of high molecular weight synthetic fatty acids
DE830153C (en) Process for the recovery of whey
AT86133B (en) Process for the production of a syrup or a dye.
DE216075C (en)
DE891790C (en) Process for the production of biologically active salts in a mixture with raw fibers and accompanying substances from humus substances or easily peat-forming plants, in particular for administration to animals
DE873693C (en) Process for the production of pure chromium nitrate
DE897097C (en) Process for the production of precipitated iron catalysts
DE572267C (en) Process for the production of condensation products from formaldehyde and urea with the use of condensation products from phthalic anhydride and polyhydric alcohols
DE386469C (en) Process for the production of metal salts from synthetic tanning agents
AT134622B (en) Process for the production of colored and patterned masses from protein substances.
DE732498C (en) Process for the production of condensation products
DE18722C (en) Process for the preparation of magnesia or magnesium carbonate on ammonium magnesium carbonate
DE662431C (en) Process for the production of ammonium phosphate-ammonium nitrate-ammonium sulphate mixed fertilizers
DE235048C (en)
DE289910C (en)