DE166947C - - Google Patents
Info
- Publication number
- DE166947C DE166947C DENDAT166947D DE166947DA DE166947C DE 166947 C DE166947 C DE 166947C DE NDAT166947 D DENDAT166947 D DE NDAT166947D DE 166947D A DE166947D A DE 166947DA DE 166947 C DE166947 C DE 166947C
- Authority
- DE
- Germany
- Prior art keywords
- evaporation
- glue
- substances
- formaldehyde
- substance
- 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
- 238000001704 evaporation Methods 0.000 description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000006188 syrup Substances 0.000 description 2
- 235000020357 syrup Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 210000003491 Skin Anatomy 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001070 adhesive Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012261 resinous substance Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J197/00—Adhesives based on lignin-containing materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
PATENTAMT.PATENT OFFICE.
Den Gegenstand des vorliegenden Patentes bildet ein Verfahren zur Herstellung eines leimartigen Stoffes aus den Ablaugen der Sulfitzellulosefabrikation. Bekanntlich entsteht beim Eindampfen der Sulfitzelluloselauge bis zur Sirupdicke ein Produkt, welches leimartige Eigenschaften hat. Dieses Abdampfen der Zelluloselauge ist indessen technisch eine sehr unangenehme Operation,The subject of the present patent forms a method for producing a glue-like substance from the waste liquors of the sulphite cellulose production. As is well known, arises when evaporating the sulphite cellulose lye up to the syrup thickness, a product which has glue-like properties. This evaporation of the cellulose eye is, however, technically a very unpleasant operation,
ίο indem sich einerseits während des Eindampfens Salze ausscheiden, welche, wenn man bei freiem Feuer oder im Vakuum eindampft, zum Stoßen und damit auch zu Verlusten und Reparaturen Veranlassung geben, und indem sich andererseits sehr bald eine Haut auf der Oberfläche der Flüssigkeit bildet, welche das weitere Verdampfen erschwert. Man hat daher bis jetzt zu verschiedenen Maßnahmen gegriffen; entweder die Salze vorher ausgefällt oder Zusätze von Kalk, Magnesia, Schwefelsäure, harzartigen Stoffen oder dergl. gemacht, oder man hat eigene Verdampfapparate für diese Laugen konstruieren müssen.ίο by on the one hand during the evaporation Separate salts, which, if you evaporate in a free fire or in a vacuum, cause knocking and thus also losses and give cause for repairs and, on the other hand, very soon a skin forms on the surface of the liquid, which makes further evaporation difficult. Various measures have therefore been taken up to now; either the salts previously precipitated or additions of lime, magnesia, sulfuric acid, resinous substances or the like. Or you have to build your own evaporators for these lyes have to.
Den Gegenstand des Patentes bildet nun ein Verfahren, welches diese Ubelstände vermeidet und es gestattet, die Lauge bei freiem Feuer, ohne jede Schwierigkeit einzudampfen und ein Endprodukt zu erhalten, das einen durchsichtigen, hellen, leimartigen Sirup von erheblicher Klebekraft darstellt, der sich in Wasser glatt auflöst und sich durch Behandeln mit Alkalien entfärben läßt.The subject of the patent is a process that avoids these inconveniences and it allows the lye to be evaporated on the open fire without any difficulty and to obtain an end product that is a clear, light-colored, glue-like syrup of represents considerable adhesive force, which dissolves smoothly in water and is treated with can be discolored with alkalis.
Das Verfahren besteht darin, daß die Laugen vor oder während des Eindampfens einen Zusatz eines Aldehydes, ζ. Β. von Formaldehyd (Paraformaldehyd), Acetaldehyd erhalten. Es genügt beispielsweise vom Formaldehyd ein Zusatz von 3 bis 5 Prozent einer 4Oprozentigen wässerigen Formaldehydlösung. Worauf die Wirkung dieses Zustandes zurückzuführen ist, ist nicht ganz klar; einige Wahrscheinlichkeit liegt vor, daß sich der Aldehyd sowohl mit den schwefligsauren Salzen als auch mit den in der Lösung enthaltenen Ligninsubstanzen zu nicht oder schwer kristallisierbaren Stoffen verbindet, welche sich beim Eindampfen nicht ausscheiden. Das erhaltene Produkt kann nach bekannten Methoden weiteren Reinigungsprozessen unterzogen werden, es kann durch Alkalien entfärbt werden, so daß eine neutrale, zu verschiedenen Zwecken brauchbare Substanz entsteht. The method consists in that the lyes before or during the evaporation an addition of an aldehyde, ζ. Β. of formaldehyde (paraformaldehyde), acetaldehyde obtain. For example, an addition of 3 to 5 percent of formaldehyde is sufficient 40 percent aqueous formaldehyde solution. To what the effect of this condition can be attributed is is not very clear; there is some likelihood that the aldehyde both with the sulphurous acid salts and with those contained in the solution Lignin substances combine to form non-crystallizable or difficult-to-crystallize substances, which combine do not precipitate on evaporation. The product obtained can be subjected to further purification processes using known methods it can be decolorized by alkalis, leaving a neutral, to different Substance useful for purposes is created.
Pate ν τ-Α ν Spruch:Godfather ν τ-Α ν saying:
Verfahren zur Herstellung eines leimartigen Stoffes durch Eindampfen von • Sulfitzellulose-Ablaugen, dadurch gekennzeichnet, daß den Laugen vor dem Eindampfen Aldehyde zugesetzt werden.Process for the production of a glue-like substance by evaporation of • Sulphite cellulose waste liquors, characterized in that the liquors before evaporation Aldehydes are added.
Claims (1)
- cfai'cn !'a-n ife. bets
- cfai'cn ! 'an ife.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE166947C true DE166947C (en) |
Family
ID=432300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT166947D Active DE166947C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE166947C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743602C (en) * | 1942-02-26 | 1943-12-29 | F Raschig G M B H Dr | Binder for foundry molds and cores |
-
0
- DE DENDAT166947D patent/DE166947C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743602C (en) * | 1942-02-26 | 1943-12-29 | F Raschig G M B H Dr | Binder for foundry molds and cores |
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