DE437172C - Process for the production of rubber with a large number of microscopic pores - Google Patents
Process for the production of rubber with a large number of microscopic poresInfo
- Publication number
- DE437172C DE437172C DEB119491D DEB0119491D DE437172C DE 437172 C DE437172 C DE 437172C DE B119491 D DEB119491 D DE B119491D DE B0119491 D DEB0119491 D DE B0119491D DE 437172 C DE437172 C DE 437172C
- Authority
- DE
- Germany
- Prior art keywords
- rubber
- jelly
- large number
- production
- milk
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B13/00—Diaphragms; Spacing elements
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/74—Rollers or roller bearings
- D01H5/80—Rollers or roller bearings with covers; Cots or covers
-
- 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
- C08J2321/00—Characterised by the use of unspecified rubbers
- C08J2321/02—Latex
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
Verfahren zur Herstellung von Kautschuk mit einer großen Anzahl mikroskopisch kleiner Poren. In dem Hauptpatent 42577o ist ein Verfahren zur Herstellung von -Kautschuk mit einer großen Anzahl mikroskopisch kleiner Poren geschützt, wonach die Kautscbtikinilch in eine homogene zusammenhängende Gallerte verwandelt und feucht vulkanisiert wird. Als Mittel zur Erzeugung der Gallerte «-aren bisher nur gewisse Salze, wie des Magnesiums und Bariums, bekannt, deren Lösungen der Kautschukmilch zugesetzt wurden. Die anderen bekannten Koagulierungsmittel, wie z. B. die Säuren, wurden zunächst nicht in Betracht gezogen, da sie beim Eingießen in Kautschukmilch keine Gallerte bilden, sondern klumpige Niederschläge unter Abscheidung der wäßriger Flüssigkeit oder eine Paste ergeben. Nach der Erfindung können null auch diese Mittei zur Erzeugung der Gallerte benutzt werden, soweit sie in Gas- oder Dampfstrom zugänglich sind, indem man nämlich ihre Gase oder Dämpfe auf die unbewegte Oberfläche der Kautschukmilch einwirken läßt. Es bildet sich dann dort in wenigen Minuten eine dünne Haut, die bei längerer Berührung mit den Gasen oder Dämpfen dauernd an Dicke zunimmt, bis sich die ganze Menge der Katits "chukinilch in eine Gallerte verwandelt hat. Diese Gallerte zeichnet sich vor der durch Salzlösungen nach dem Verfahren des Hauptpatents gewonnenen durch gri* #ßere Gleichmäßigkeit, Festigkeit und Elastizität aus, und auch der aus ihr durch Vulkanisation hergestellte poröse Körper hat dieselben Vorzüge. Als solche Gase oder Dämpfe haben sich besonders diejenigen der schwefligen Säure und der Essigsäure bewährt. Die Vulkanisation der nach der Erfindung hergestellten Gallerte ist die gleiche wie nach denn Hauptpatent. Beispiele: i. r oo ccm Latex werden mit i oo cern Wasser versetzt, in welchem 15 g kolloidaler Schwefel suspendiert sind. Diese Flüssigkeit wird in flache Formen gegossen und letztere in ein dichtschließendes Gefäß gebracht. In das Gefäß wird gasförmige schweflige Säure eingeleitet, bis etwa die Hälfte der darin vorhandenen Luft durch die schweflige Säure verdrängt ist. Je nach Dicke der Flüssigkeitsschicht wird sie i bis 2 Stunden in die-,;er Atmosphäre belassen, während welcher Zeit sie in eine zähe homogene Gallerte übergegangen ist. Diese Gallerte wird gut gewässert, um die Reste der schwefligen Säure zu entfernen, und hierauf in feuchtem Zustande, in gesättigtem Wasserdampf oder in Wasser bei 61/4 Atin. vulkanisiert.Process for the production of rubber with a large number microscopic small pores. In the main patent 42577o is a process for the production of rubber protected with a large number of microscopic pores, after which the chewable milk is transformed into a homogeneous, coherent jelly and vulcanized when wet. Hitherto only certain salts, such as magnesium, have been used as a means of producing the jellies and barium, the solutions of which have been added to the rubber milk. The others known coagulants, such as. B. the acids, were initially not considered because they do not form jelly when poured into rubber milk, but rather lumpy precipitates with separation of the aqueous liquid or a paste result. According to the invention, these means for producing the jelly can also be zero are used as far as they are accessible in gas or steam flow, namely by their gases or vapors act on the motionless surface of the rubber milk leaves. A thin skin then forms there in a few minutes, and that with longer Contact with the gases or vapors continuously increases in thickness until the whole Amount of katits "chukinilch has turned into a jelly. This jelly draws before the one obtained by salt solutions according to the method of the main patent grasp from greater evenness, firmness and elasticity, and that from it too porous bodies made by vulcanization have the same advantages. As such Gases or vapors have become especially those of sulphurous acid and acetic acid proven. The vulcanization of the jelly produced according to the invention is the same as after the main patent. Examples: i. r oo ccm latex will be with i oo added cern water in which 15 g of colloidal sulfur are suspended. These Liquid is poured into shallow molds, and the latter into a tight-fitting one Brought vessel. Gaseous sulphurous acid is introduced into the vessel until about half of the air in it is displaced by the sulphurous acid. Depending on the thickness of the liquid layer, it is immersed in the atmosphere for 1 to 2 hours leave, during which time it has turned into a tough homogeneous jelly. This jelly is well watered to remove the remains of the sulphurous acid, and then in a moist state, in saturated steam or in water 61/4 Atin. vulcanized.
z. Das in obigem Beispiel beschriebene Geinisch von Latex, Wasser und Schwefel wird ebenso in Formen gegossen und in ein dichtes Gefäß gebracht, in welchem sich Dämpfe von Essigsäure befinden. Diese Dämpfe werden zweckmäßig erzeugt, indem man Tücher o. dgl. mit konzentrierter Essigsäure tränkt und in dem Gefäß aufhängt. In diesem Gefäß verbleibt die Beschickung je nach Dicke der Schicht 2 bis 4 Stunden, worauf die aus ihr entstandene Gallerte gründlich ausgewaschen und wie nach Beispiel r vulkanisiert wird. Die Einwirkungsdauer der Essisäure kann verkürzt werden, wenn man das Gefäß auf etwa 8o° erwärmt, wodurch einmal eine stärkere Verdampfung der Essigsäure eintritt und außerdem die Gerhinung noch beschleunigt wird.z. The mixture of latex and water described in the example above and sulfur is also poured into molds and into a dense one vessel brought, in which there are vapors of acetic acid. These vapors become useful generated by soaking cloths o. The like. With concentrated acetic acid and in the The vessel hangs up. The charge remains in this vessel depending on the thickness of the layer 2 to 4 hours, after which the jelly created from it is thoroughly washed out and how to vulcanize according to example r. The exposure time of the acetic acid can can be shortened if the vessel is heated to about 80 °, which creates a stronger one Evaporation of the acetic acid occurs and also accelerates curdling will.
3. Die in obigem Beispiel genannte Mischung von Latex, Wasser und Schwefelt wird in ein dichtes Gefäß gebracht, in welchem sich, außer Berührung mit dieser Flüssigkeit, eine genügende Menge Alkohol befindet. Hierauf wird das Gefäß auf etwa So' erwärmt, wobei der Alkohol verclairTft. Durch die Wirkung dieser- Dämpfe erstarrt die Flüssigkeit im Laufe von 2 Stunden zu einer festen Gallerte, welche dann ebenfalls ausgewaschen und wie in den vorigen Beispielen vulkanisiert wird.3. The mixture of latex, water and sulfur mentioned in the above example is placed in a tight vessel in which, apart from contact with this liquid, there is a sufficient amount of alcohol. Then, the vessel is heated to about So ', wherein the alcohol verclairTft. Due to the action of these vapors, the liquid solidifies in the course of 2 hours to a solid jelly, which is then also washed out and vulcanized as in the previous examples.
Claims (1)
Priority Applications (17)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE335911D BE335911A (en) | 1924-09-27 | ||
BE328056D BE328056A (en) | 1924-09-27 | ||
DEB115876D DE425770C (en) | 1924-09-27 | 1924-09-28 | Process for the production of rubber with a large number of microscopic pores |
DEB119491D DE437172C (en) | 1925-04-29 | 1925-04-29 | Process for the production of rubber with a large number of microscopic pores |
DEB120520D DE442619C (en) | 1924-09-27 | 1925-06-26 | Process for the production of rubber with a large number of microscopic pores |
FR606989D FR606989A (en) | 1924-09-27 | 1925-08-05 | Process for preparing rubber with a large number of microscopic pores |
DEB121578D DE439980C (en) | 1924-09-27 | 1925-09-02 | Process for the production of rubber with a large number of microscopic pores |
GB21973/25A GB262179A (en) | 1924-09-27 | 1925-09-02 | Improvements relating to a process for the production of rubber |
GB19198/26A GB257561A (en) | 1924-09-27 | 1926-08-03 | Process for the manufacture of rubber with innumerable microscopically small pores |
FR32422D FR32422E (en) | 1924-09-27 | 1926-08-09 | Process for preparing rubber with a large number of microscopic pores |
DEB140036D DE623943C (en) | 1924-09-27 | 1928-10-27 | Process for the production of a microporous rubber from rubber dispersions |
DEB141120D DE561568C (en) | 1924-09-27 | 1928-12-25 | Process for the production of microporous rubber compounds and articles |
DEB143451D DE556904C (en) | 1924-09-27 | 1929-05-04 | Process for the production of microporous rubber |
FR37521D FR37521E (en) | 1924-09-27 | 1929-10-21 | Process for preparing rubber with a large number of microscopic pores |
GB32518/29A GB338698A (en) | 1924-09-27 | 1929-10-25 | |
FR38424D FR38424E (en) | 1924-09-27 | 1930-04-28 | Process for preparing rubber with a large number of microscopic pores |
GB13493/30A GB346588A (en) | 1924-09-27 | 1930-05-01 | Process for the production of microporous rubber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB119491D DE437172C (en) | 1925-04-29 | 1925-04-29 | Process for the production of rubber with a large number of microscopic pores |
Publications (1)
Publication Number | Publication Date |
---|---|
DE437172C true DE437172C (en) | 1926-11-15 |
Family
ID=6995064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB119491D Expired DE437172C (en) | 1924-09-27 | 1925-04-29 | Process for the production of rubber with a large number of microscopic pores |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE437172C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10238119B2 (en) | 1999-02-01 | 2019-03-26 | General Mills, Inc. | Blunt edge dough cutter |
-
1925
- 1925-04-29 DE DEB119491D patent/DE437172C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10238119B2 (en) | 1999-02-01 | 2019-03-26 | General Mills, Inc. | Blunt edge dough cutter |
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