CH95457A - Process for converting the resinous phenol-formaldehyde condensation product into an easily pulverizable resin. - Google Patents

Process for converting the resinous phenol-formaldehyde condensation product into an easily pulverizable resin.

Info

Publication number
CH95457A
CH95457A CH95457DA CH95457A CH 95457 A CH95457 A CH 95457A CH 95457D A CH95457D A CH 95457DA CH 95457 A CH95457 A CH 95457A
Authority
CH
Switzerland
Prior art keywords
condensation product
heated
resin
phenol
resinous
Prior art date
Application number
Other languages
German (de)
Inventor
Haftung Bakelite Beschraenkter
Hessen Dr Richard
Original Assignee
Bakelite Gmbh
Hessen Dr Richard
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 Bakelite Gmbh, Hessen Dr Richard filed Critical Bakelite Gmbh
Publication of CH95457A publication Critical patent/CH95457A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/28—Chemically modified polycondensates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
    • C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
    • C08G8/10—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Description

  

  Verfahren zum Umwandeln des harzartigen     Phenolfornialdehydlzondensationsprodulites     in ein leicht     pulverisierbares    Harz.    Im Hauptpatent ist ein Verfahren be  schrieben, welches die Umwandlung des har  zigen mit Basen hergestellten     Phenolformal-          dehydkondensationsproduktes    in ein- leicht       pulverisierbares,    durch Erhitzen in ein     un-          schmelzbares,    unlösliches Kondensationspro  dukt umzuwandelndes Harz bezweckt.  



  Das vorliegende Verfahren bezweckt, das  harzige     Phenolformaldehydkondensationspro-          dukt    in ein beim Erhitzen nicht in ein     un-          schmelzbares    Kondensationsprodukt umzu  wandelndes, leicht     pulverisierbares,    beim Er  wärmen nicht klebendes Harz umzuwandeln.

    Das Verfahren besteht darin, dass man aus  Phenol und Formaldehyd mit Basen als Kon  densationsmittel das harzige Kondensations  produkt herstellt und dasselbe vor seiner  endgültigen     Abscheidung    mit einem sauren       Stoff    in einer Menge, die unterhalb derjeni  gen ist, welche das Harz in das     unschmelz-          bare    unlösliche Kondensationsprodukt über  zuführen vermag und die hinreichend ist, um  soviel Base zu binden, dass nicht mehr ge-         nügend    Base vorhanden ist, um das Harz  beim Erhitzen in das     unschmelzbare    unlös  liche Kondensationsprodukt überzuführen, ver  setzt und erhitzt.

      <I>Beispiel 1:</I>  110 Gewichtsteile Phenol und 80 Ge  wichtsteile 40     Gew.        o/oiger    Formaldehyd wer  den mit 2 Gewichtsteilen 18     o/oigem    Ammoniak  etwa 40-45 Minuten erhitzt; hierauf mit 8,2  Gewichtsteilen 10     o/oiger    Salzsäure versetzt,  etwa 15 Minuten erhitzt und das abgeschie  dene Harz gewaschen und eingedampft.

           Beispiel   <I>2</I>  110 Gewichtsteile Phenol und 75     Ge-          vvichtsteile    40     Gew.        o/oiger    Formaldehyd wer  den mit 2 Gewichtsteilen 18     o/oigem    Ammoniak  etwa 45     Minuten    erhitzt, hierauf wird unter  Rühren solange ein     Schwefeldioxydstrom    ein  geleitet, bis das abgeschiedene Wasser sauer  reagiert und dann nochmals etwa 10 Minuten  erhitzt.

        <I>-</I>     $eispieZ   <I>3:</I>  <B>110</B> Gewichtsteile Phenol und 26 Ge  wichtsteile     Triogymethylen    werden mit 2  Gewichtsteilen Natriumkarbonat (kristallisiert)  etwa 15-20 Minuten erhitzt, hierauf 2,5 Ge  wichtsteile     Ogalsäure,    gelöst in Wasser, hin  zugesetzt und bis zur     Abscheidung    nochmals  erhitzt, das abgeschiedene Harz gewaschen  und eingedampft.



  Process for converting the resinous phenol formaldehyde condensation product into an easily pulverizable resin. The main patent describes a process which aims to convert the resinous phenol-formaldehyde condensation product produced with bases into an easily pulverizable resin which can be converted into an infusible, insoluble condensation product by heating.



  The purpose of the present process is to convert the resinous phenol-formaldehyde condensation product into an easily pulverizable, non-sticky resin when heated, which cannot be converted into an infusible condensation product when heated.

    The process consists in preparing the resinous condensation product from phenol and formaldehyde with bases as condensation agents, and the same before its final separation with an acidic substance in an amount which is below that which the resin in the infusible, insoluble one Able to supply condensation product and which is sufficient to bind so much base that there is no longer enough base to convert the resin into the infusible, insoluble condensation product when heated, ver sets and heated.

      <I> Example 1: </I> 110 parts by weight of phenol and 80 parts by weight of 40% by weight formaldehyde who are heated with 2 parts by weight of 18% ammonia for about 40-45 minutes; then mixed with 8.2 parts by weight of 10% hydrochloric acid, heated for about 15 minutes and washed and evaporated the resin deposited.

           Example <I> 2 </I> 110 parts by weight of phenol and 75 parts by weight of 40% by weight formaldehyde are heated with 2 parts by weight of 18% ammonia for about 45 minutes, then a stream of sulfur dioxide is passed in with stirring until the separated water reacts acidic and then heated again for about 10 minutes.

        <I> - </I> $ eispieZ <I> 3: </I> <B> 110 </B> parts by weight of phenol and 26 parts by weight of triogymethylene are heated with 2 parts by weight of sodium carbonate (crystallized) for about 15-20 minutes, then heated 2.5 parts by weight ogalic acid, dissolved in water, added and heated again until separation, the separated resin washed and evaporated.

Claims (1)

PATENTANSPRUCH Verfahren zum Umwandeln des harzigen, unter Verwendung von Basen als Konden sationsmittel erhaltenen Phenolformaldehyd- kondensationsproduktes in ein leicht pulveri- sierbares, sprödes, geruchloses, beim Erhitzen nicht in ein unschmelzbares Kondensations produkt umzuwandelndes, in Alkohol und Aceton lösliches, beim Erwärmen nicht kle bendes Harz von höherem Schmelzpunkt und grösserer Härte als das mit Basen oder Säuren hergestellte, dadurch gekennzeichnet, PATENT CLAIM A process for converting the resinous phenol-formaldehyde condensation product obtained using bases as a condensation agent into an easily pulverizable, brittle, odorless, which cannot be converted into an infusible condensation product when heated, soluble in alcohol and acetone and non-sticky when heated Resin with a higher melting point and greater hardness than that made with bases or acids, characterized in that dass man aus Phenol und. Formaldehyd mit Basen als Kondensationsmittel das harzige Kondensa tionsprodukt herstellt und dasselbe vor seiner endgültigen Abscheidung mit einem sauren Stoffe in einer Menge, die unterhalb derjeni gen ist, welche das Harz beim Erhitzen in das unschmelzbare, unlösliche Kondensations produkt überzuführen vermag und die genügt, um soviel Base zu binden, dass nicht mehr hinreichend Base zur Umwandlung des Harzes beim Erhitzen in das unschmelzbare, unlös- licbe Kondensationsprodukt vorhanden ist, versetzt und erhitzt. that one made of phenol and. Formaldehyde with bases as the condensation agent produces the resinous condensation product and the same, before its final separation, with an acidic substance in an amount which is below that which the resin can convert into the infusible, insoluble condensation product when heated and which is sufficient for that much To bind base that there is no longer sufficient base to convert the resin into the infusible, insoluble condensation product when heated, is added and heated. UNTERANSPRUCH 1: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als sauren Stoff eine Säure verwendet. UNTERANSPRUCH 2: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als sauren Stoff ein saures Salz verwendet. SUBClaim 1: Process according to claim, characterized in that an acid is used as the acidic substance. SUBClaim 2: Method according to claim, characterized in that an acidic salt is used as the acidic substance.
CH95457D 1920-03-01 1921-02-21 Process for converting the resinous phenol-formaldehyde condensation product into an easily pulverizable resin. CH95457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE340990T 1920-03-01

Publications (1)

Publication Number Publication Date
CH95457A true CH95457A (en) 1922-07-01

Family

ID=6230848

Family Applications (3)

Application Number Title Priority Date Filing Date
CH94231D CH94231A (en) 1920-03-01 1921-02-21 Process for converting the resinous phenol-formaldehyde condensation product into an easily pulverizable resin.
CH95457D CH95457A (en) 1920-03-01 1921-02-21 Process for converting the resinous phenol-formaldehyde condensation product into an easily pulverizable resin.
CH95458D CH95458A (en) 1920-03-01 1921-03-10 Process for converting the resinous cresol-formaldehyde condensation product into an easily pulverizable resin.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH94231D CH94231A (en) 1920-03-01 1921-02-21 Process for converting the resinous phenol-formaldehyde condensation product into an easily pulverizable resin.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH95458D CH95458A (en) 1920-03-01 1921-03-10 Process for converting the resinous cresol-formaldehyde condensation product into an easily pulverizable resin.

Country Status (4)

Country Link
AT (1) AT104724B (en)
CH (3) CH94231A (en)
DE (1) DE340990C (en)
FR (1) FR531467A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748697C (en) * 1935-02-01 1944-11-09 Hermann Frenkel Fa Method of painting wood using phenol-formaldehyde synthetic resin paints
DE749798C (en) * 1937-10-10 1944-12-05 Process for the production of insoluble and infusible casting resins
US2865875A (en) * 1956-07-19 1958-12-23 Catalin Corp Of America Low ash phenol-formaldehyde resins and process of preparation

Also Published As

Publication number Publication date
CH95458A (en) 1922-07-01
CH94231A (en) 1922-04-17
FR531467A (en) 1922-01-14
AT104724B (en) 1926-11-25
DE340990C (en) 1921-09-22

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