DE1443748A1 - Process for the preparation of acrylic or methacrylic acid - Google Patents

Process for the preparation of acrylic or methacrylic acid

Info

Publication number
DE1443748A1
DE1443748A1 DE19641443748 DE1443748A DE1443748A1 DE 1443748 A1 DE1443748 A1 DE 1443748A1 DE 19641443748 DE19641443748 DE 19641443748 DE 1443748 A DE1443748 A DE 1443748A DE 1443748 A1 DE1443748 A1 DE 1443748A1
Authority
DE
Germany
Prior art keywords
acrylic
preparation
methacrylic acid
odor
yerfahrea
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.)
Pending
Application number
DE19641443748
Other languages
German (de)
Inventor
Bier Dr Gerhard
Hartel Dr Heinz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of DE1443748A1 publication Critical patent/DE1443748A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catalysts (AREA)

Description

Troisdorf, du 5.10.1964Troisdorf, you October 5, 1964

U43748U43748

9TMAMIf KOBBL AETIEICSSKLLSCI/i"?
Troledorf / Bos. Kttla9TMAMIf KOBBL AETIEICSSKLLSCI / i "?
Troledorf / Bos. Kttla

Yerfahrea aar Heratelluag tob Akryl- odor Methakrylaft&reYerfahrea aar Heratelluag tob Akryl- odor Metha k rylaft & re

Zar IorstolluBc voa Alkallaalaoa dor Akryl- odor Nethakrylsäaro ferfaaroa »ekaaat odor Torgoaohlagoa worden, boi donon dio Oxydatioa dor oBtaproohoBdOB Aldohydo sit Ku]Ter-(ll)-Oxyd odor «Hydroxyd Ib OogoBwart ve» Katalyaatorea a.B. Kdolaetallea odor KdolmotalloxydoB» Ib wlB-rle··« »lkalieoh·« Modiea durchgeführt wird, volohoa aittola H*trioB- odor KaliaaiBydroxyd einKestollt wurdo. Di· KtrooBsitaroB vordoB doBB d«roh ABoäaorB Ib Freiheit goaetat uad aua ihroB TordüBBtoB LdaoBe-oB laoliort· Pro Mol entstandener Kar »ons aar e «ordoB also aoi dor OzydatioB eia KoI Alkalihydroxyd uad »el dor Iaolieruaf dio eatapreohoado Moago Hiaeralaäuro hinxugefii^t. Dio eatataadoaom MoatralaalB· erleioktera dasei duroh einea Auaaalaoffokt dio Bxtraktloa Wird j dooh la dor Weise kontinuierlich gearbeitet, daB kartoasämreholtlgo Löooaeoa fortlaafoad extrahiert uad dio wierigo Phaao aar Wledorrerwenduaf ooi dor Aldehyd-Oxydatioa aurüokgefiihrt wird» so koaeit oo aaoh eiaor goviaaoa Zeit aa oiaor Aarolohoruag tob loutralaalaoa la eias* tfafaa·*· «al doroa LBalioakoltsprodakt la Waoaar üaoroehrlttea oad daalt oiao AasfUlaac her»eigefükrt wird·Zar IorstolluBc voa Alkallaalaoa dor Akryl- odor Nethakrylsäaro ferfaaroa »ekaaat odor Torgoaohlagoa been, boi donon dio Oxydatioa dor oBtaproohoBdOB Aldohydo sit Ku] Ter- (ll) -Oxydola loxator-Hydroxdea Ible Ibido loxodor-Kdwartolea» ·· «» lkalieoh · «Modiea is carried out, volohoa aittola H * trioB- odor KaliaaiBydroxyd a Kes madt was. Di · KtrooBsitaroB voroB doBB d «raw ABoäaorB Ib Freedom goaetat uad aua ihroB TordüBBtoB LdaoBe-oB laoliort · Per mole of car» ons aar e «ordoB also aoi dor OzydatioB eugafia KoI Alkalihydroxydioiiaaprexefia KoI Alkalihydroxydioiia oo oo deralhydroxydio . Dio eatataadoaom Moatralaal B loutralaalaoa la eias * tfafaa · * · «al doroa LBalioakoltsprodakt la Waoaar üaoroehrlttea oad daalt oiao AasfUlaac her»

BAD ORIGINAL 909812/1041ORIGINAL BATH 909812/1041

Es wurde nun gefunden» daß naa diesen Uaahteil voraeidon kann, wenn ■ab Erdalkalihydroxydo, «uB· Magnesium-, Calcine· oder Bariuahydroxyt, anstelle von Alkalihydroxyden und Kohlendiojsyd anstelle ran anderen Säuren einseist·It has now been found that this part can happen if ■ from alkaline earth hydroxide, «uB · magnesium, calcine · or barium hydroxide, instead of alkali hydroxides and carbon dioxide instead of others Acids

Ea iat dabei vorteilhaft, fiaJJ die gegeaU&ar Alkal!hydroxyden geringere Lösliohkeit der Erdalkalihydroxyde in Wasser au einer kleineren Baslaitat tea Systens führt, wodurch die Pölyaeriaationsneigung bei den uage· sättigten Aldehyden aurüekgadrängt wird« Bei um erfindungagemäßen Terfahren 1st es weiterhin von Vorteil, daß es sieh ia einfacher <taia· und ait billigen Chemikalien auaführe» IMt» CaleiiEsesrfconat s*B» bereitet Budea geringere Aafariseitung·«= aad Aewaseerprableee. ala die bisher aafallenden Alkalicalse«Ea iat advantageous here fiaJJ the gegeaU & ar Alkal! Hydroxides lower Lösliohkeit the alkaline earth metal hydroxides in water au a smaller Baslaitat tea Systens leads, making the Pölyaeriaationsneigung in uage · saturated aldehydes is aurüekgadrängt "In order erfindungagemäßen retracts, it 1st further advantage that it look ia simpler <taia · and ait cheap chemicals execute "IMt" CaleiiEsesrfconat s * B "prepares Budea less Aafariseitung ·" = aad Aewaseerprableee. ala the so far falling alkaline lime «

Beispiel 1tExample 1t Gemisch aus 24 g CuO und o„72 g A*20 (frisch gefällt aus wAfirigeaMixture of 24 g CuO and o 72 g A * 2 0 (freshly precipitated from wAfirigea

Lösungen von Cu(MO5J2 . J Η£0 und AgHO3 mit Ca(SH)2) wurden sus&aaea «it 2,ag GaO In 5oo ml Wasser tropfanweiae mit 5,i g Akroleia ver* aetst, anoohlicßend vom Festkörper abgaaaugt und in das Filtrat CO« eingeleitet. GaCO^ wurde praktisch quantitativ anagefällt. Ia Α·τ Lösung wurde der Gehalt an freier Ikryleiure su 98.2 ;;i der i'aeori· beetioat·Solutions of Cu (MO 5 J. 2 J Η £ 0 and Agho 3 with Ca (SH) 2) were sus & AAEA "it 2, a g GaO In 5oo ml of water tropfanweiae 5, i g Akroleia ver aetst * anoohlicßend from the solid exhausted and introduced into the filtrate CO «. GaCO ^ was produced practically quantitatively. Ia Α τ solution, the content of free Ikryleiure su 98.2 ;; i'aeori beetioat

Beispiel example ItIt

flurd· analog Beispiel 1, JeAooh unter Verwendung voa 8,6 g Ba (OB)2 gearbeitet, so ergab sieh 4er Oehalt der Lösuag naeh der Beaktiea se 9β,6 £ der lheerie an gebildeter freier Akryleüere.In the same way as in Example 1, but using 8.6 g of Ba (OB) 2 , the result was 4% of the solution according to the Actiea se 9β, 6% of the free acrylics formed.

BADBATH

909812/104909812/104

Claims (1)

fateataaspr—frfateataaspr — fr H43748H43748 Yerfahrea «or Herstellung von Akryl- oder HethakrylsHure daran Oxydation von AkroleiB oder Methnkroleln «It Kupf«r-(ll)-Oxyd la ti9gm«9tart τα» Katalysatoren in alkalisohe«f wässerige« Medium und aaeehlie&endea Ansäuern, dadurch gekenneeiehnat, daß man anetelle tob Alkalihydrozyden Brdalkttl!hydroxyde rerwendet uxd die gebildetes Halse »it Kohleasämre sersetst·Yerfahrea "or the production of acrylic or HethakrylsHure because oxidation of AkroleiB or Methnkroleln" It Kupf "r- (II) -Oxyd la ti 9gm" 9tart τα "catalysts in alkalisohe" f aqueous "medium and aaeehlie & Endea acidification gekenneeiehnat characterized in that anetelle tob Alkalihydrozyden Brdalkttl! hydroxyde rerwendet uxd the formed neck »with Kohleasämre sersetst · Pateata»teil«B«Pateata "part" B " »r.Hi/iu»R.Hi / iu BAD ORIGINAL 909812/1041ORIGINAL BATH 909812/1041
DE19641443748 1964-10-09 1964-10-09 Process for the preparation of acrylic or methacrylic acid Pending DE1443748A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0045597 1964-10-09

Publications (1)

Publication Number Publication Date
DE1443748A1 true DE1443748A1 (en) 1969-03-20

Family

ID=7049119

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19641443748 Pending DE1443748A1 (en) 1964-10-09 1964-10-09 Process for the preparation of acrylic or methacrylic acid

Country Status (4)

Country Link
BE (1) BE670431A (en)
DE (1) DE1443748A1 (en)
GB (1) GB1055229A (en)
NL (1) NL6513085A (en)

Also Published As

Publication number Publication date
GB1055229A (en) 1967-01-18
BE670431A (en)
NL6513085A (en) 1966-04-12

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