DE227667C - - Google Patents
Info
- Publication number
- DE227667C DE227667C DENDAT227667D DE227667DA DE227667C DE 227667 C DE227667 C DE 227667C DE NDAT227667 D DENDAT227667 D DE NDAT227667D DE 227667D A DE227667D A DE 227667DA DE 227667 C DE227667 C DE 227667C
- Authority
- DE
- Germany
- Prior art keywords
- esters
- solvent
- resins
- solution
- products
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
- C08J3/095—Oxygen containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Fats And Perfumes (AREA)
Description
solcher Ester als Lösungsmittel.such ester as a solvent.
Die Erfindung beruht auf der Beobachtung, daß die bisher nur in der wissenschaftlichen Literatur beschriebenen Alkyl- und Arylester der Phtalsäure von großem technischen Interesse sind, weil sie ein vorzügliches Lösungsmittel für die verschiedenartigsten Substanzen bilden.The invention is based on the observation that so far only in the scientific Alkyl and aryl esters of phthalic acid described in the literature are of great technical interest because they are an excellent solvent for a wide variety of substances form.
Es hat sich herausgestellt, daß die genannten Ester beispielsweise fette und ätherische Öle,It has been found that the esters mentioned, for example, fatty and essential oils,
ίο Riechstoffe u. dgl., insbesondere aber Harze
zu lösen vermögen, und zwar hat sich ergeben, daß das Lösungsvermögen außerordentlich
groß ist und bereits geringe Mengen der. Ester imstande sind, erhebliche Mengen der
genannten Produkte in Lösung zu bringen. Die erforderliche Menge des Lösungsmittels
richtet sich nach der für den betreffenden Verwendungszweck notwendigen Temperatur.
Beispielsweise löst sich 1 Teil Kolophonium beim Erwärmen bereits in 0,3 Teilen Phtalsäuredimethylester
oder -diäthylester vollkommen klar auf. Zu einer in der Kälte klar bleibenden Lösung sind große Mengen des
Lösungsmittels erforderlich.ίο Fragrances and the like, but in particular able to dissolve resins, and indeed it has been shown that the dissolving power is extremely large and even small amounts of. Esters are able to bring considerable amounts of the named products into solution. The required amount of solvent depends on the temperature required for the intended use.
For example, 1 part of rosin dissolves completely clear when heated in 0.3 parts of dimethyl phthalate or diethyl ester. Large amounts of the solvent are required for a solution that remains clear in the cold.
Diese Eigenschaft der Ester ist von ganz besonderer Wichtigkeit für die Verarbeitung von Harzen. Es ist in vielen Fällen, insbesondere bei der Verarbeitung von Kopalharz, notwendig, diese Produkte einer Erhitzung zu unterziehen, um gewisse Spaltungsreaktionen hervorzurufen, die erforderlich sind, um dem Produkt die für die technische Verwendung erforderlichen Eigenschaften zu verleihen.This property of the esters is of particular importance for processing of resins. In many cases, especially when processing copal resin, it is necessary to subject these products to heating in order to initiate certain cleavage reactions that are necessary to make the product suitable for technical use to give necessary properties.
Die hierbei notwendigen hohen Temperaturen bringen indessen den Nachteil mit sich, daß neben der gewollten Spaltung anderweitige unerwünschte Nebenreaktionen auftreten, die die Eigenschaften des Produkts schädlich beeinflussen, z. B. stark gefärbte Produkte ergeben.However, the high temperatures required here have the disadvantage that In addition to the desired cleavage, other undesirable side reactions occur that the Adversely affect the properties of the product, e.g. B. result in strongly colored products.
Dies zu vermeiden, bietet die Verwendung des oben genannten Lösungsmittels eine Handhabe. Wenn man nämlich die Harze nicht durch Schmelzen, sondern in den genannten Estern gelöst erhitzt, so treten die unbeabsichtigten Nebenreaktionen nicht ein. Dabei ist es von besonderem Vorteil, daß man durch geeignete Auswahl der Ester bzw. dadurch, daß man mehrere Ester mischt, die Temperaturen, bis zu denen die Erhitzung bei gewöhnlichem Druck getrieben werden kann und die von dem Siedepunkte des Lösungsmittels und der Konzentration der Lösung abhängen, innerhalb sehr weiter Grenzen beliebig regeln kann.The use of the above-mentioned solvent offers a means of avoiding this. If the resins are not heated by melting, but dissolved in the esters mentioned, the unintended occur Side reactions not one. It is of particular advantage that by suitable selection of the esters or by that one mix several esters, the temperatures up to which the heating is usual Pressure can be applied and which depend on the boiling point of the solvent and the concentration of the solution, can regulate at will within very wide limits.
Pate ν t-An SPRU c H :Pate ν t-An SPRU c H:
Die Benutzung von Alkyl- und Arylestern der Phtalsäure oder von Gemischen solcher Ester als Lösungsmittel, insbesondere für Harze, fette und ätherische öle und Riechstoffe, mit oder ohne Anwendung von Wärme.The use of alkyl and aryl esters of phthalic acid or mixtures such esters as solvents, especially for resins, fats and essential oils and fragrances, with or without the application of heat.
5555
6060
BERLIN. GEDRUCKT IN DER REICHSDRUCKEKEI.BERLIN. PRINTED IN THE REICHSDRUCKEKEI.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191012633T | 1910-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE227667C true DE227667C (en) |
Family
ID=32561915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT227667D Active DE227667C (en) | 1910-05-24 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE227667C (en) |
| GB (1) | GB191012633A (en) |
-
0
- DE DENDAT227667D patent/DE227667C/de active Active
-
1910
- 1910-05-24 GB GB191012633D patent/GB191012633A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB191012633A (en) | 1911-05-24 |
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