DE341693C - - Google Patents
Info
- Publication number
- DE341693C DE341693C DENDAT341693D DE341693DA DE341693C DE 341693 C DE341693 C DE 341693C DE NDAT341693 D DENDAT341693 D DE NDAT341693D DE 341693D A DE341693D A DE 341693DA DE 341693 C DE341693 C DE 341693C
- Authority
- DE
- Germany
- Prior art keywords
- benzene
- resin
- sulfuric acid
- crude
- water
- 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
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 27
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- -1 benzene hydrocarbons Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N precursor Substances N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F240/00—Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (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)
Description
Verfahren zur Gewinnung eines ganz oder größtenteils in Benzol löslichen Harzes durch Aufarbeitung von Rohbenzol oder Benzolvorerzeugnis. Die Aufarbeitung der Abfallsäure, die zum Reinigen von Benzolkohlenwasserstoffen gedient hat, ist von großer wirtschaftlicher Bedeutung. Sie enthält organische Bestandteile, welche nach ihrer Abscheidung mit Wasser eine sehr brauchbare Grundlage zur Herstellung von Lacken und anderen Erzeugnissen bilden. Für. die fabrikmäßige Herstellung dieser Harze hat sich ein einfaches Verfahren ergeben, indem sie gleichzeitig mit ihrer Abscheidung durch Wasser in Benzolkohlenwasserstoffen aufgenommen werden. In manchen Fällen haben sich Schwierigkeiten in der Trennung der Benzol- und Säureschicht gezeigt, indem Bestandteile des Harzes sich nicht in Benzol lösten und eitle Suspension bildeten, die zu Verlusten an Benzol, Harz und Säure führten.Process for obtaining a wholly or largely soluble in benzene Resin by processing crude benzene or benzene pre-product. The work-up of the waste acid that has been used to purify benzene hydrocarbons of great economic importance. It contains organic components, which a very useful basis for production after their separation with water of paints and other products. For. the factory production of these Resins has turned out to be a simple process by simultaneously using their Separation by water can be absorbed in benzene hydrocarbons. In some Cases have shown difficulties in separating the benzene and acid layers, in that components of the resin did not dissolve in benzene and formed a vain suspension, which led to losses of benzene, resin and acid.
Die vorliegende Erfindung zeigt nun einen einfachen Weg zur Vermeidung dieser Schwierigkeiten. Man destilliert vor der Reinigung mit Schwefelsäure die niedrigst siedenden Anteile des Rohprodukts ab, und zwar so lange, bis die Reinigungsschwefelsäure beim Verdünnen mit Wasser ein glatt in Benzol lösliches Harz ergibt. Überraschenderweise ist die hierzu nötige Menge Vordestillat sehr klein und beträgt bei ganz leichten Benzolen höchstens 5 Prozent. In den meisten Fällen ist sie erheblich geringer. Die neue Arbeitsweise zeigt große Vorteile in drei Richtungen: Ersparnis an Schwefelsäure, glatter und schneller Betrieb sowie sichere Erzielung eines technisch brauchbaren Harzes. Die geringe Menge Vorlauf kann gesondert gewaschen oder anders verwandt werden.The present invention now shows a simple way of avoiding it these difficulties. It is distilled before purification with sulfuric acid lowest-boiling fractions of the crude product, and so long until the cleaning sulfuric acid when diluted with water gives a resin that is readily soluble in benzene. Surprisingly the amount of pre-distillate required for this is very small and is very light in the case of very light Benzenes at most 5 percent. In most cases it is considerably less. The new way of working shows great advantages in three directions: Saving of sulfuric acid, smooth and faster operation as well as safe achievement of a technically usable one Resin. The small amount of feed can be washed separately or used in a different way will.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE341693C true DE341693C (en) |
Family
ID=571845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT341693D Active DE341693C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE341693C (en) |
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0
- DE DENDAT341693D patent/DE341693C/de active Active
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