AT106018B - Process for the production of condensation products from the waste and wash water and distillates that fall off during the production of condensation products from phenols and formaldehyde. - Google Patents

Process for the production of condensation products from the waste and wash water and distillates that fall off during the production of condensation products from phenols and formaldehyde.

Info

Publication number
AT106018B
AT106018B AT106018DA AT106018B AT 106018 B AT106018 B AT 106018B AT 106018D A AT106018D A AT 106018DA AT 106018 B AT106018 B AT 106018B
Authority
AT
Austria
Prior art keywords
condensation products
production
waste
distillates
formaldehyde
Prior art date
Application number
Other languages
German (de)
Inventor
Erich Dr Glaser
Original Assignee
Erich Dr Glaser
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 Erich Dr Glaser filed Critical Erich Dr Glaser
Application granted granted Critical
Publication of AT106018B publication Critical patent/AT106018B/en

Links

Landscapes

  • Removal Of Specific Substances (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Gewinnung von Kondensationsprodukten aus den bei Herstellung von 
 EMI1.1 
 



   Bekanntlich werden bei der Kondensation von Phenolen und wässerigen Formaldehydlösungen   unter bestimmten Arbeitsbedingungen zwei Phasen   des Reaktionsgemisches erhalten, nämlich eine harzartige Phase von   Zwisehenkondensationsprodukten   und eine wässerige Phase, die unverbundene. reaktive und auch Zwischenkondensationsprodukte enthält. 
 EMI1.2 
 steigender Temperatur behandelt. Die hiebei ausgeschiedenen   harzartigen Flüssigkeiten können entweder   als nicht härtbare Kondensationsprodukte zur Herstellung von Lacken Verwendung finden oder durch Kochen mit weiteren   Formaldehydmengen   bei Gegenwart alkalischer   Kondensationsmittel   in härtbare Kondensationsprodukte überführt werden. Zur Durchführung des Verfahrens kann man z.

   B. in folgender Weise vorgehen : Das bei der Kondensation   von gleichen Gewichtsteilen Phenol und 30"oiger wässeriger   
 EMI1.3 
 stehen gelassen. Am Boden des Gefässes Scheidet sich eine harzartige Phase, kurz Säureharz genannt. aus, die zweimal mit dem gleichen Volumen Wasser gewaschen wird. Dieses gewaschene Harz. in bekannter Weise eingedickt, ergibt einen festen Novolak, der z. B. zur Herstellung von Lacken Verwendung finden kann. Durch Kochen des Säureharzes mit weiteren   Formaldehydmengen   in Gegenwart eines alkalischen Kondensationsmittels kann ein durch Wärmebehandlung härtbares Harz (Resitol) erhalten werden. 



   2. An Stelle der in Beispiel 1 genannten Schwefelsäure kann man für 1000 gAbwasser 100 g H Cl von 15 % zusetzen. Es ergibt sich ein ähnliches Harz, das wie in Beispiel 1 weiterbehandelt werden kann. 



   3, 1000 g Abwasser werden mit 300 g Na H SO4 Lösung   (20So)   versetzt und in gleicher Weise, wie beim ersten Beispiel dargelegt, weiterbehandelt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the production of condensation products from the production of
 EMI1.1
 



   It is known that in the condensation of phenols and aqueous formaldehyde solutions under certain working conditions, two phases of the reaction mixture are obtained, namely a resinous phase of intermediate condensation products and an aqueous phase, the unconnected one. contains reactive and also intermediate condensation products.
 EMI1.2
 treated with increasing temperature. The resinous liquids separated can either be used as non-hardenable condensation products for the production of paints or can be converted into hardenable condensation products by boiling with further amounts of formaldehyde in the presence of alkaline condensation agents. To carry out the process you can, for.

   B. proceed in the following way: That in the condensation of equal parts by weight of phenol and 30 "oiger aqueous
 EMI1.3
 ditched. A resinous phase, called acid resin for short, separates out at the bottom of the vessel. which is washed twice with the same volume of water. This washed resin. Thickened in a known manner, results in a solid novolak z. B. can be used for the production of paints. By boiling the acid resin with further amounts of formaldehyde in the presence of an alkaline condensing agent, a resin (resitol) curable by heat treatment can be obtained.



   2. Instead of the sulfuric acid mentioned in Example 1, 100 g of 15% HCl can be added for 1000 g of waste water. A similar resin results, which can be treated further as in Example 1.



   3, 1000 g of wastewater are mixed with 300 g of Na H SO4 solution (20So) and treated further in the same way as in the first example.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATIENT-ANSPRUCH : Verfahren zur Gewinnung von Kondensationsprodukten aus den bei Herstellung von Kondensationsprodukten aus Phenolen und Formaldehyd abfallenden Ab-und Waschwässern und Destillaten, dadurch gekennzeichnet, dass die Ab- und Waschwässer bzw. Destillate mit Säuren oder sauren Salzen bei gewöhnlicher oder 600 C nicht Übersteigender Temperatur behandelt werden, wodurch sieh aus dem sich selbst überlassenen Reaktionsgemisch die darin noch enthaltenen Harzkörper abscheiden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATIENT CLAIM: Process for obtaining condensation products from the waste and washing water and distillates obtained during the production of condensation products from phenols and formaldehyde, characterized in that the waste and washing water or distillates are treated with acids or acidic salts at normal temperature or temperature not exceeding 600 C. As a result, the resin bodies still contained therein separate from the reaction mixture left to its own devices. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT106018D 1921-05-27 1921-05-27 Process for the production of condensation products from the waste and wash water and distillates that fall off during the production of condensation products from phenols and formaldehyde. AT106018B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT106018T 1921-05-27

Publications (1)

Publication Number Publication Date
AT106018B true AT106018B (en) 1927-03-25

Family

ID=3623457

Family Applications (1)

Application Number Title Priority Date Filing Date
AT106018D AT106018B (en) 1921-05-27 1921-05-27 Process for the production of condensation products from the waste and wash water and distillates that fall off during the production of condensation products from phenols and formaldehyde.

Country Status (1)

Country Link
AT (1) AT106018B (en)

Similar Documents

Publication Publication Date Title
AT106018B (en) Process for the production of condensation products from the waste and wash water and distillates that fall off during the production of condensation products from phenols and formaldehyde.
AT103106B (en) Process for the production of condensation or polymerization products of acetylene.
DE432202C (en) Process for the production of acid-free, resinous condensation products from phenols and aldehydes
AT71166B (en) Process for the preparation of 4-halogeno- and 4-alkyl-1-oxyanthraquinones and their substitution products.
AT106980B (en) Process for the production of acid-free, resinous, condensation products from phenols and aldehydes.
AT88650B (en) Process for the production of a tanning agent from sulphite cellulose waste liquor.
AT123224B (en) Process for the production of condensation products from urea or its derivatives and formaldehyde.
AT136012B (en) Process for the preparation or regeneration of catalysts for the conversion of terpenes.
AT70369B (en) Process for the preparation of water-soluble condensation products, which dissolve poorly soluble components of natural tannins with ease.
AT72853B (en) Process for removing the unpleasant smell of fatty acids from tears or fish oils.
DE499710C (en) Process for the production of urea-formaldehyde condensation products
AT107842B (en) Process for the production of resinous condensation products from phenols and aldehydes in pure form.
AT68796B (en) Process for the production of tanning preparations which are easily soluble in cold water.
AT85841B (en) Process for the production of the naphthasulfonic acids resulting from the acid refining of mineral oils.
AT128350B (en) Process for the preparation of low-electrolyte aqueous solutions of silk fibroin.
AT105788B (en) Process for the production of soluble, fusible condensation products from phenols and formaldehyde.
AT118224B (en) Process for improving the effect of alkaline treatment liquids in the textile industry.
AT89638B (en) Process for the production of water-soluble and water-emulsifiable substances.
AT156793B (en) Process for the production or improvement of organic cation exchangers.
AT158659B (en) Process for the manufacture of a product from wool fat which is colloidally soluble in water.
DE354697C (en) Process for the preparation of resinous condensation products from phenols and aldehydes
AT79897B (en) Process for the deacidification of the nitroglycerine. Process for the deacidification of the nitroglycerine.
AT102297B (en) Process for the preparation of disinfectants from beechwood tar oils made water-soluble or water-emulsifiable with the help of soap.
AT88646B (en) Process for the production of tanning substances.
AT101467B (en) Process for the manufacture of bodies of resin and tanning nature.