DE1131396B - Stabilization of rubber milk foams - Google Patents

Stabilization of rubber milk foams

Info

Publication number
DE1131396B
DE1131396B DEF29374A DEF0029374A DE1131396B DE 1131396 B DE1131396 B DE 1131396B DE F29374 A DEF29374 A DE F29374A DE F0029374 A DEF0029374 A DE F0029374A DE 1131396 B DE1131396 B DE 1131396B
Authority
DE
Germany
Prior art keywords
rubber
stabilization
rubber milk
milk foams
parts
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.)
Pending
Application number
DEF29374A
Other languages
German (de)
Inventor
Dr Walter Hagge
Dr Georg Matthaeus
Dr Mathieu Quaedvlieg
Dr Werner Theuer
Dr Gustav Sinn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DEF27418A external-priority patent/DE1103573B/en
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF29374A priority Critical patent/DE1131396B/en
Publication of DE1131396B publication Critical patent/DE1131396B/en
Pending legal-status Critical Current

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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C1/00—Treatment of rubber latex
    • C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
    • C08C1/06—Preservation of rubber latex
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/205—Compounds containing groups, e.g. carbamates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/08—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being arranged in a sinuous or zig-zag path
    • 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

Description

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

kl. 39b 9kl. 39b 9

INTERNATIONALE KL.INTERNATIONAL KL.

C08c;dC08c; d

F 29374 IVd/39 bF 29374 IVd / 39 b

ANMELDETAG: 12. SEPTEMBER 1959REGISTRATION DATE: SEPTEMBER 12, 1959

BEKANNTMACHUNG
DER ANMELDUNG
UNDAUSGABE DER
AUSLEGESCHRIFT: 14. JUNI 1962 NOTICE
THE REGISTRATION
AND ISSUE OF
EDITORIAL: JUNE 14, 1962

In der deutschen Patentschrift 1103 573 wird die Verwendung von Fettsäureestern von Di- und Oligosacchariden zur Stabilisierung von Kautschukmilchschäumen beschrieben.In the German patent specification 1103 573 Use of fatty acid esters of di- and oligosaccharides to stabilize rubber milk foams described.

Es wurde nun gefunden, daß man an Stelle der Fettsäureester von Di- und Oligosacchariden auch deren Carbaminsäureester zur Stabilisierung von Kautschukmilchschäumen verwenden kann.It has now been found that, instead of the fatty acid esters of di- and oligosaccharides, whose carbamic acid ester can be used to stabilize rubber milk foams.

Für das erfindungsgemäße Verfahren bevorzugte Carbaminsäureester sind z. B. Saccharosedodecyl-, Saccharosecetyl-, Saccharosemyristyl-, Raffinosedodecyl- oder Raffinosemyristylcarbaminsäureester.Carbamic acid esters preferred for the process according to the invention are, for. B. sucrose dodecyl, Sucrose cetyl, sucrose myristyl, raffinose dodecyl or raffinose myristyl carbamic acid esters.

Solche Carbaminsäureester von Di- und Oligosacchariden werden z. B. in der deutschen Patentschrift 1046 010 beschrieben und können nach dem dort angegebenen Verfahren erhalten werden, wenn man z. B. Saccharose mit Alkylisocyanaten umsetzt. Vorzugsweise enthalten die Alkylgruppen der Isocyanate 8 bis 20 Kohlenstoffatome.Such carbamic acid esters of di- and oligosaccharides are z. B. in the German patent 1046 010 and can be obtained by the method specified there, if one z. B. Sucrose reacts with alkyl isocyanates. The alkyl groups of the isocyanates preferably contain 8 to 20 carbon atoms.

Die Carbaminsäureester werden den wäßrigen Dispersionen in den für Stabilisatoren üblichen Mengen zugesetzt, z.B. in Mengen von 0,5 bis l,5fl/o, vorzugsweise von 0,8 bis 1,0%, bezogen auf Kautschuktrockensubstanz. The carbamic acid esters are added to the aqueous dispersions in the amounts customary for stabilizers, for example in amounts from 0.5 to 1.5 fl / o, preferably from 0.8 to 1.0%, based on the dry rubber substance.

Außer wäßrigen Dispersionen von natürlichem Kautschuk können auch solche von synthetischen kautschukähnlichen Polymerisaten verwendet werden, wie sie z. B. erhalten werden aus konjugierten Diolefinen, wie z. B. Butadien, Dimethylbutadien, Isopren, und ihren Homologen und Mischpolymerisaten von derartig konjugierten Diolefinen mit polymerisierbaren Vinylverbindungen, wie z. B. Styrol, α-Methylstyrol und ihre Substitutionsprodukte, Acrylsäurenitril, Methacrylsäurenitril und ähnliche Polymerisate oder Mischpolymerisate, die aus Isoolefinen, wie z. B. Isobutylen und seinen Homologen, gegebenenfalls mit geringen Mengen konjugierter Diolefine, erhalten werden. Weiterhin sind auch die wäßrigen Dispersionen von solchen Polymerisaten geeignet, die aus Chlorbutadien oder dessen Mischpolymerisaten mit Mono- und/oder Diolefinen oder polymerisierbaren Vinylverbindungen erhalten werden. Diese können weiterhin die üblichen Zusätze, wie z. B. Füllstoffe, enthalten.In addition to aqueous dispersions of natural rubber, those of synthetic rubber can also be used rubber-like polymers are used as they are, for. B. obtained from conjugated diolefins, such as B. butadiene, dimethylbutadiene, isoprene, and their homologues and copolymers of such conjugated diolefins with polymerizable vinyl compounds, such as. B. styrene, α-methylstyrene and their substitution products, acrylonitrile, methacrylonitrile and similar polymers or copolymers consisting of isoolefins, such as. B. isobutylene and its homologues, if appropriate with small amounts of conjugated diolefins. The aqueous dispersions are also available of such polymers suitable, those of chlorobutadiene or its copolymers with Mono- and / or diolefins or polymerizable vinyl compounds are obtained. these can continue to use the usual additives, such as B. fillers contain.

Beispielexample

a) Zu einer Kautschukmilchmischung folgender Zusammensetzung: a) To a rubber milk mixture of the following composition:

aa) 100,0 Teile Kautschuktrockensubstanz soaa) 100.0 parts of dry rubber substance as above

= 167,0 Teile Kautschukmilch, 60%ig= 167.0 parts rubber milk, 60%

Stabilisierung von KautschukmilchschäumenStabilization of rubber milk foams

Anmelder:Applicant:

Farbenfabriken Bayer Aktiengesellschaft,
Leverkusen-BayerwerkPaint factories Bayer Aktiengesellschaft,
Leverkusen-Bayerwerk

Dr. Walter Hagge, Leverkusen,Dr. Walter Hagge, Leverkusen,

Dr. Georg Matthaeus, Köln-Flittard,Dr. Georg Matthaeus, Cologne-Flittard,

Dr. Mathieu Quaedvlieg, Dr. Werner Theuer,Dr. Mathieu Quaedvlieg, Dr. Werner Theuer,

Leverkusen,Leverkusen,

und Dr. Gustav Sinn, Bergisch-Neukirchen,
sind als Erfinder genannt wordenand Dr. Gustav Sinn, Bergisch-Neukirchen,
have been named as inventors

bb) 5,0 Teile Zinkoxydbb) 5.0 parts of zinc oxide

2,0 Teile Schwefel2.0 parts sulfur

1,0 Teil Zinkdiäthyldithiocarbamat1.0 part zinc diethyl dithiocarbamate

0,8 Teile Dioxydiphenyl0.8 parts of dioxydiphenyl

8,8 Teile einer 5°/oigen wäßrigen Lösung eines Kondensationsproduktes aus
naphthalinsulfosaurem Natrium und Formaldehyd8.8 parts of a 5% aqueous solution of a condensation product
sodium naphthalenesulfonate and formaldehyde

gibt man 6 bis 12 Teile einer 100/oigen wäßrigen Lösung von Saccharoselaurylcarbaminsäureester sowie 0,5 bis 1 Teil Hefe, welche lO°/oig in Wasser aufgeschlämmt wurde, und 50 bis 80 Teile einer 100/oigen Hydroperoxydlösung. Sofort nach Zugabe des Hydroperoxyds wird die Kautschukmüchmischung in eine Form gegeben, worin durch die Sauerstoffabspaltung die Schaumbildung vor sich geht. Der in der Form befindliche Schaum wird auf —10 bis —30° C abgekühlt. Während des Abkühlprozesses tritt kein Schaumzerfall obiger Mischung ein, wie dies bei Verwendung anderer Seiten beobachtet wird. Der Schaum koaguliert homogen durch. Es wird, wie üblich, erwärmt und vulkanisiert.is one of 6 to 12 parts of a 10 0 / o aqueous solution of Saccharoselaurylcarbaminsäureester and 0.5 to 1 part yeast which was lO ° / oig slurried in water and 50 to 80 parts of a 10 0 / o Hydroperoxydlösung. Immediately after the addition of the hydroperoxide, the rubber powder mixture is poured into a mold in which foaming takes place as a result of the elimination of oxygen. The foam in the mold is cooled to -10 to -30 ° C. During the cooling process, no foam breakdown of the above mixture occurs, as is observed when using other pages. The foam coagulates homogeneously. As usual, it is heated and vulcanized.

b) An Stelle des Saccharoselaurylcarbaminsäureesters kann man auch die gleiche Menge Saccharosemyristylcarbaminsäureester verwenden.b) Instead of the sucrose lauryl carbamic acid ester, the same amount of sucrose myristyl carbamic acid ester can also be used use.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Verwendung von Carbaminsäureestern von Di- und Oligosacchariden zur Stabilisierung von Kautschukmilchschäumen.Use of carbamic acid esters of di- and oligosaccharides to stabilize Rubber milk foams. © 209 609/431 6.62© 209 609/431 6.62
DEF29374A 1959-01-05 1959-09-12 Stabilization of rubber milk foams Pending DE1131396B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF29374A DE1131396B (en) 1959-01-05 1959-09-12 Stabilization of rubber milk foams

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF27418A DE1103573B (en) 1959-01-05 1959-01-05 Stabilization of rubber milk foams
DEF29374A DE1131396B (en) 1959-01-05 1959-09-12 Stabilization of rubber milk foams

Publications (1)

Publication Number Publication Date
DE1131396B true DE1131396B (en) 1962-06-14

Family

ID=25974207

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF29374A Pending DE1131396B (en) 1959-01-05 1959-09-12 Stabilization of rubber milk foams

Country Status (1)

Country Link
DE (1) DE1131396B (en)

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