DE829357C - Process for the production of synthetic resins, in particular for paint preparation - Google Patents
Process for the production of synthetic resins, in particular for paint preparationInfo
- Publication number
- DE829357C DE829357C DEP2796A DEP0002796A DE829357C DE 829357 C DE829357 C DE 829357C DE P2796 A DEP2796 A DE P2796A DE P0002796 A DEP0002796 A DE P0002796A DE 829357 C DE829357 C DE 829357C
- Authority
- DE
- Germany
- Prior art keywords
- synthetic resins
- production
- paint preparation
- general formula
- condensation
- 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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
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, insbesondere zur Lackbereitung Die Erfindung betrifft ein Verfahren zur Herstellung von Kunstharzen und die Verwendung der derart gewonnenen Kunstharze zur Herstellung von Lacken.Process for the production of synthetic resins, in particular for paint preparation The invention relates to a method for the production of synthetic resins and the use the synthetic resins obtained in this way for the production of paints.
Die Anforderungen an ein Kunstharz zur Lackherstellung sind hoch. Es wird die Bildung einer Lackschicht angestrebt, die bei ausreichender Härte der Oberfläche auch hohe Elastizität, Dichte und Glanz aufweist und gegenüber Licht, Wasser und Feuchtigkeit und anderen atmosphärischen Einflüssen genügend widerstandsfähig ist. Für viele Sonderzwecke wird von dem Lacküberzug auch ein Schutz gegenüber Säuren und Laugen verlangt.The demands on a synthetic resin for paint production are high. The aim is to form a layer of varnish that, with sufficient hardness, of the Surface also has high elasticity, density and gloss and is resistant to light, Sufficiently resistant to water and moisture and other atmospheric influences is. For many special purposes, the lacquer coating also provides protection against acids and lye required.
Bei den Untersuchungen zur Ge,%vinnung von Kunstharzen wurde nun gefunden, daß durch Kondensation der Verbindung von der allgemeinen Formel in der Ar und Arg gleiche oder verschiedene aromatische Reste und R und R1 gleiche oder verschiedene aliphatische Reste darstellen, mit Aldehyden, insbesondere Formaldehyd, Kunstharze gewonnen werden.In the investigations on the Ge,% vinnung of synthetic resins it has now been found that by condensation of the compound of the general formula in which Ar and Arg represent identical or different aromatic radicals and R and R1 represent identical or different aliphatic radicals, synthetic resins are obtained with aldehydes, in particular formaldehyde.
Es war bekannt, die Verbindungen dieser allgemeinen Formel, z. B. den symmetrischen Diäthyldiphenvlharnstoff, als Plastifizierungs- und Weichmacherzusätze hei der Lackherstellung auf NTitrocellulosebasis anzuwenden. Es war aber nicht bekannt und konnte auch nicht erwartet werden, daß die Verbindungen dieser allgemeinen Formel auf Grund ihrer Reaktionsträgheit der Kondensation zugänglich seien und selbst Kunstharz bilden würden.It was known that the compounds of this general formula, e.g. B. the symmetrical diethyldiphenylurea, as plasticizing and softening additives in the manufacture of lacquer based on Nitrocellulose apply. It but was not known and could not be expected that the connections This general formula is accessible to condensation because of its inertia and would form synthetic resin themselves.
Es ergab sich weiter, daß die so gebildeten Kunstharze ausgezeichnete technische Eigenschaften für die Lackherstellung aufwiesen und den genannten hohen Anforderungen entsprachen. Beispiel too Teile symmetrischer Diäthyldiphenylharnstoff, 65 Teile Formaldehydlösung, 35o/oig, werden erhitzt und bei 9o° unter starkem Rühren 3o Teile Schwefelsäure (konzentriert) langsam zugegeben. Unter Rühren wird weiter erhitzt, bis die Kondensation abgeschlossen ist. Das gebildete Kunstharz ist mit heißem Wasser mehrmals auszuwaschen, zu neutralisieren und nach erneutem Auswaschen zum Schluß durch Schmelzen zu entwässern.The synthetic resins thus formed were further found to be excellent exhibited technical properties for paint production and the aforementioned high Requirements met. Example too parts of symmetrical diethyldiphenylurea, 65 parts of formaldehyde solution, 35%, are heated and heated to 90 ° with vigorous stirring 3o parts sulfuric acid (concentrated) slowly added. Keep stirring heated until condensation is complete. The synthetic resin formed is with Wash out hot water several times, neutralize and wash out again finally drained by melting.
Die Verarbeitung dieser Kunstharze zu Lacken erfolgt sodann in an sich bekannter Weise.The processing of these synthetic resins into paints then takes place in an known way.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR829357X | 1948-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE829357C true DE829357C (en) | 1952-01-24 |
Family
ID=9284227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP2796A Expired DE829357C (en) | 1948-06-01 | 1948-10-02 | Process for the production of synthetic resins, in particular for paint preparation |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE829357C (en) |
-
1948
- 1948-10-02 DE DEP2796A patent/DE829357C/en not_active Expired
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