DE376729C - Process for the production of synthetic resins - Google Patents
Process for the production of synthetic resinsInfo
- Publication number
- DE376729C DE376729C DEF49204D DEF0049204D DE376729C DE 376729 C DE376729 C DE 376729C DE F49204 D DEF49204 D DE F49204D DE F0049204 D DEF0049204 D DE F0049204D DE 376729 C DE376729 C DE 376729C
- Authority
- DE
- Germany
- Prior art keywords
- resins
- production
- synthetic resins
- parts
- formaldehyde
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Description
Verfahren zur Herstellung von Kunstharzen. In dem Patent 374379 ist ein Verfahren beschrieben, nach welchem durch Einwirkung von Azetaldehydphenolharzen auf rezente minderwertigere Naturharze hochwertige Harze mit kopalähnlichen Eigenschaften erhalten werden.Process for the production of synthetic resins. In the patent 374379 is described a method according to which by the action of acetaldehyde phenol resins on recent inferior natural resins, high-quality resins with copal-like properties can be obtained.
Es wurde nun gefunden, daß man in dem Verfahren des Hauptpatentes die Azetaldehydharze teilweise durch Formaldehydharze ersetzen kann. Ein vollständiger Ersatz der Azetaldehydharze durch Formaldehydharze ist deshalb nicht möglich, weil im Falle eines solchen die Produkte ihre Leinöllöslichkeit verlieren, welche für die Verwendung wesentlich ist. Die angewandten Mengenverhältnisse können in weiten Grenzen schwanken. Die Masse wird auf Temperaturen von über ioo °, beispielsweise etwa Zoo °, erhitzt und bei dieser Temperatur gehalten, bis die Schmelze homogen ist, d. h. in der Kälte zu einem klaren, durchsichtig bleibenden Harz erstarrt. Beispiele i. 4o Teile Naturkolophonium werden mit 6o Teilen des Kondensationsproduktes aus Karbolsäure und Formaldehyd verschmolzen und in die Schmelze bei etwa 17o bis 18o' langsam unter Rühren 35 Teile des Kondensationsproduktes aus Kresol und Paraldehydhin zugefügt. Es tritt Schäumen ein, das beim Höhersteigen der Temperatur auf 2io bis 22o' lebhafter wird. Man hält die Schmelze so lange bei dieser Temperatur, bis eine Probe beim Erkalten nicht mehr gelblich trüb und undurchsichtig wird, sondern zu einem hellen, durchsichtigen Glase erstarrt. Das entstandene Harz läßt sich glatt mit Leinöl zu einem brauchbaren Lack verkochen.It has now been found that in the process of the main patent can partially replace acetaldehyde resins with formaldehyde resins. A complete one Replacement of acetaldehyde resins by formaldehyde resins is not possible because in the case of such the products lose their linseed oil solubility, which for the use is essential. The proportions used can vary widely Boundaries fluctuate. The mass is to temperatures of over ioo °, for example about Zoo °, heated and kept at this temperature until the melt is homogeneous is, d. H. solidified in the cold to a clear, transparent resin. Examples i. 40 parts of natural rosin are mixed with 60 parts of the condensation product from carbolic acid and formaldehyde fused and added to the melt at about 17o to 18o 'slowly with stirring 35 parts of the condensation product of cresol and paraldehyde added. Foaming occurs, which occurs when the temperature rises to 2io to 22o 'becomes livelier. The melt is kept at this temperature until a Sample no longer turns yellowish, cloudy and opaque when it cools, but closes solidified in a bright, transparent glass. The resulting resin can be smooth Cook with linseed oil to a usable varnish.
2. i2o Teile des durch Zusammenschmelzen von 5o Teilen Fichtenharzund7o Teilen Kreosotformaldehydharz entstandenen, nicht leinöllöslichen Produktes werden mit 3o Teilen des durch Kondensation von Karbolsäure und Paraldehyd entstandenen Produktes vermischt, die Mischung geschmolzen und so lange auf Temperaturen über Zoo ° erhitzt, bis das Schäumen beendet und die Masse zu einem in der Kälte klarbleibenden Harze erstarrt. Dieses ist dann in Leinöl glatt löslich.2. i2o parts of the spruce resin and7o Parts of creosote-formaldehyde resin are not soluble in linseed oil with 3o parts of the resulting from the condensation of carbolic acid and paraldehyde Product mixed, the mixture melted and so long at temperatures above Zoo ° is heated until foaming has stopped and the mass becomes clear in the cold Resins solidified. This is then completely soluble in linseed oil.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF49204D DE376729C (en) | 1921-04-21 | 1921-04-21 | Process for the production of synthetic resins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF49204D DE376729C (en) | 1921-04-21 | 1921-04-21 | Process for the production of synthetic resins |
Publications (1)
Publication Number | Publication Date |
---|---|
DE376729C true DE376729C (en) | 1923-06-05 |
Family
ID=7102820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF49204D Expired DE376729C (en) | 1921-04-21 | 1921-04-21 | Process for the production of synthetic resins |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE376729C (en) |
-
1921
- 1921-04-21 DE DEF49204D patent/DE376729C/en not_active Expired
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