DE540489C - Process for the production of electrophoretic rubber deposits - Google Patents
Process for the production of electrophoretic rubber depositsInfo
- Publication number
- DE540489C DE540489C DEA53389D DEA0053389D DE540489C DE 540489 C DE540489 C DE 540489C DE A53389 D DEA53389 D DE A53389D DE A0053389 D DEA0053389 D DE A0053389D DE 540489 C DE540489 C DE 540489C
- Authority
- DE
- Germany
- Prior art keywords
- rubber
- production
- electrophoretic
- rubber deposits
- deposits
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims description 3
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 3
- 150000001768 cations Chemical class 0.000 claims description 3
- 238000001962 electrophoresis Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000003197 gene knockdown Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002000 Electrolyte additive Substances 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 229910000397 disodium phosphate Inorganic materials 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000001488 sodium phosphate Substances 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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4403—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with rubbers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
Verfahren zur Herstellung elektrophoretischer Kautschukniederschläge Es ist bekannt, kautschukartige Stoffe aus ihren wässerigen Dispersionen elektrophoretisch niederzuschlagen und dadurch Waren in einer durch die Gestalt der Niederschlagungsunterlage bestimmten Form zu erzeugen. Die Zähigkeit der hierbei erzielten Niederschläge läßt oft zu wünschen übrig.Process for the production of electrophoretic rubber deposits It is known to electrophoretically remove rubber-like substances from their aqueous dispersions knock down and thereby goods in one through the shape of the knockdown document to produce a certain shape. The toughness of the precipitates achieved in this way can often much to be desired.
Gemäß der Erfindung kann die Zähigkeit dieser Niederschläge dadurch erhöht werden, daß man der wässerigen Kautschukdispersion Elektrolyte zusetzt, die entweder ein mindestens zweiwertiges Kation oder ein mindestens dreiwertiges Anion aufweisen. Als zweiwertige Kationen aufweisender Elektrolytzusatz hat sich beispielsweise Calciumchlorid bewährt, welches wahrscheinlich durch seine labilisierende Wirkung die Kohäsion und Zähigkeit des Niederschlages erhöht. Als mehrwertige Anionen aufweisende Elektrolyte lassen sich Alkaliferrocyanid oder Alkaliphosphat mit Erfolg verwenden. 'Diese letzteren Zusätze haben beim Niederschlagen des Kautschuks unmittelbar auf metallische Anoden, die zu schnell in Lösung gehen, wie etwa Zink, die weitere Wirkung, daß sie eine unlösliche Verbindung mit dem in Lösung gehenden Zink eingehen und durch Einverleibung dieses Niederschlages in den Kautschuk die Zähigkeit desselben erhöhen.According to the invention, the toughness of these precipitates can thereby be increased by adding electrolytes to the aqueous rubber dispersion which either an at least divalent cation or an at least trivalent anion exhibit. An electrolyte additive having divalent cations has, for example, been found Calcium chloride has proven its worth, which is probably due to its labilizing effect increases the cohesion and toughness of the deposit. As having polyvalent anions Electrolytes, alkali ferrocyanide or alkali phosphate can be used with success. 'These latter additives have an immediate effect when the rubber is deposited metallic anodes that dissolve too quickly, such as zinc, the further effect, that they enter into an insoluble bond with the zinc going into solution and by incorporating this precipitate in the rubber, the toughness of the same raise.
'Beispielsweise ergab eine aus Kautschuk und Füllstoffen hergestellte Dispersion mit dem Trockensubstanzgehalt von 25 °/o, einer Alkalität von o,og normal und einer spezifischen Leitfähigkeit von o,oö3go auf einer Zinkanode bei einer Stromdichte von i,2 Amp/dmz kataphoretische Niederschläge, deren äußere Seite stark krümelig war. Wurde aber der Dispersion i g Dinatriumphosphat pro Liter zugesetzt, so waren die erhaltenen kataphoretischen Niederschläge durchweg zäh und zweckentsprechend.'For example, a dispersion made from rubber and fillers with a dry matter content of 25 %, an alkalinity of o, og normal and a specific conductivity of o, oö3go on a zinc anode at a current density of 1.2 Amp / dmz resulted in cataphoretic precipitations, the outer side of which was very crumbly. If, however, disodium phosphate was added per liter to the dispersion, the cataphoretic precipitates obtained were consistently tough and appropriate for the purpose.
Es ist bereits vorgeschlagen worden, in. Verbindung mit der elektrophoretischen Niederschlagung des Kautschuks Calciumchlorid zu verwenden, doch wurde dieses Salz nicht der der Elektrophorese zu unterwerfenden Dispersion zugesetzt, sondern bei Verwendung einer aus Gelatine bestehenden Unterschicht dieser letzteren zwecks Erhöhung der Hygroskopizität einverleibt.It has already been suggested in connection with the electrophoretic Precipitation of the rubber to use calcium chloride, however, this salt was not added to the dispersion to be subjected to electrophoresis, but rather at Use of a gelatin sub-layer of the latter for the purpose of enhancement incorporated into hygroscopicity.
Es ist auch schon vorgeschlagen worden, der Kautschukmilch Magnesiumcarbonat zuzusetzen, doch ist dieses Salz wegen seiner Schwerlöslichkeit auf den Verlauf der Elektrophorese unwirksam.It has also been suggested that the rubber milk be magnesium carbonate add, but this salt is due to its poor solubility on the course electrophoresis ineffective.
Claims (1)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8399/27A GB297780A (en) | 1927-03-26 | 1927-03-26 | Improvements in the direct production of rubber articles from aqueous dispersion of rubber and the like vegetable resins or compounds thereof |
| GB540489X | 1927-03-26 | ||
| GB651730X | 1927-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE540489C true DE540489C (en) | 1931-12-16 |
Family
ID=32397639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA53389D Expired DE540489C (en) | 1927-03-26 | 1928-02-26 | Process for the production of electrophoretic rubber deposits |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE540489C (en) |
-
1928
- 1928-02-26 DE DEA53389D patent/DE540489C/en not_active Expired
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