DE854092C - Process for the vulcanization of alkylated and aralkylated lignin - Google Patents

Process for the vulcanization of alkylated and aralkylated lignin

Info

Publication number
DE854092C
DE854092C DEK8411A DEK0008411A DE854092C DE 854092 C DE854092 C DE 854092C DE K8411 A DEK8411 A DE K8411A DE K0008411 A DEK0008411 A DE K0008411A DE 854092 C DE854092 C DE 854092C
Authority
DE
Germany
Prior art keywords
lignin
vulcanization
aralkylated
alkylated
rubber
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
Application number
DEK8411A
Other languages
German (de)
Inventor
Walter Eduard Asmus Simon
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.)
WERKE KIEL A G DEUTSCHE
Original Assignee
WERKE KIEL A G DEUTSCHE
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
Application filed by WERKE KIEL A G DEUTSCHE filed Critical WERKE KIEL A G DEUTSCHE
Priority to DEK8411A priority Critical patent/DE854092C/en
Application granted granted Critical
Publication of DE854092C publication Critical patent/DE854092C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H8/00—Macromolecular compounds derived from lignocellulosic materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H99/00—Subject matter not provided for in other groups of this subclass, e.g. flours, kernels

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Description

Verfahren zur Vulkanisierung von alkyliertem und aralkyliertem Lignin Es ist bekannt, daß der Vulkanisationseffekt beim Kautschuk durch eine Molekülverkettung infolge Schwefelanlagerung erfolgt, während andererseits bekannt ist, claß Ligninverbindungen mit Schwefel reaktionsfähig sind. Es wurde nun gefunden, daß sich alkyliertes und aralkvliertes Lignin oder ligninhaltige Stoffe nach den bekannten Vulkanisationsverfahren in unlösliche kautschukartige Massen überführen lassen. Es ist hierbei gleichgültig, aus welcher Quelle das Lignin stammt bzw. in welcher Form es vorliegt. So lassen sich z. B. Holz und Huminsäuren nach diesen Verfahren vulkanisieren. Das normale aralkylierte Lignin ist ebenso wie aralkylierte Cellulose in fast allen Benzolkohlenwasserstoffen löslich, während das vulkanisierte Lignin in allen Benzolkohlenwasserstoffen unlöslich ist. Da Anteile des Ausgangsproduktes nicht an der Vulkanisation teilnehmen, beeinträchtigen diese die Zugfestigkeit des Endprodukts. Aus diesem Grunde besteht gegenüber dem Kunstkautschuk eine Unterlegenheit, so daß sich das Material nur für Zwecke verwenden läßt, bei denen nicht die höchsten Ansprüche an die Zugfestigkeit gestellt werden, wie z. B. für Dichtungen, Isolierungen, Auskleidungen, Hartgummiaustausc'h usw.Process for the vulcanization of alkylated and aralkylated lignin It is known that the vulcanization effect in rubber is caused by a chain of molecules takes place as a result of sulfur deposition, while on the other hand it is known that lignin compounds are reactive with sulfur. It has now been found that alkylated and Alkalized lignin or lignin-containing substances according to the known vulcanization process can be converted into insoluble rubber-like masses. It does not matter here What source the lignin comes from or in what form it is available. Let it be z. B. vulcanize wood and humic acids using this process. The normal one Aralkylated lignin, like aralkylated cellulose, is in almost all benzene hydrocarbons soluble, while the vulcanized lignin is insoluble in all benzene hydrocarbons is. Since fractions of the starting product do not take part in the vulcanization, impair this is the tensile strength of the final product. For this reason there is against the Synthetic rubber an inferiority, so the material can only be used for purposes leaves that do not meet the highest demands on tensile strength, such as B. for seals, insulation, linings, hard rubber exchanges, etc.

Beispiel l 380 g benzyliertes Holz werden .mit 35 g Tricresylphosphat und 35 g Dibutylphthalat weich gemacht. Nach erfolgter Weichmachung bei möglichst niedriger Temperatur werden 5 g Mercaptobenzothiazol, 2 g Diphenylguanidin und 2 g Tetraäthylthiuramdisulfid zugleich mit io g Schwefel in die Masse eingetragen. Das Material wird bei einer Temperatur von ungefähr 120° 5 Minuten vul@kanisiert. Nach diesem Vorgang ist der erhaltene Körper in allen gebräuchlichen Lösungsmitteln unlöslich.Example 1 380 g of benzylated wood are softened with 35 g of tricresyl phosphate and 35 g of dibutyl phthalate. After plasticization has taken place at the lowest possible temperature, 5 g of mercaptobenzothiazole, 2 g of diphenylguanidine and 2 g of tetraethylthiuram disulfide are added to the mass at the same time as 10 g of sulfur. The material is vul @canized at a temperature of approximately 120 ° for 5 minutes. After this process, the body obtained is insoluble in all common solvents.

Claims (5)

PATENTANSPRÜCHE: i. Verfahren zur Vulkanisierung von alkyliertem und aralkyliertem Lignin und/oder ligninhaltigen Massen, dadurch gekennzeichnet, daß die vom Kautschuk her bekannten Vulkanisationsverfahren zur Anwendung gelangen. PATENT CLAIMS: i. Process for the vulcanization of alkylated and aralkylated lignin and / or lignin-containing compositions, characterized in that the vulcanization processes known from rubber are used. 2. Verfahren gemäß Anspruch i, dadurch gekennzeichnet, daß Humirnsäuren nach den vom Kautschuk her bekannten Vulkanisationsverfahren behandelt werden. 2. The method according to claim i, characterized in that humic acids according to the vulcanization processes known from rubber are treated. 3. Verfahren gemäß Anspruch i und 2, dadurch gekennzeichnet, daß Schwefel zur Anwendung gelangt. ¢. 3. Procedure according to claims 1 and 2, characterized in that sulfur is used. ¢. Verfahren gemäß Anspruch i und 2, dadurch gekennzeichnet, daß die bekannten schwefelübertragenden Vulkanisationsmittel zur Anwendung gelangen. Process according to claims i and 2, characterized in that the known sulfur-transferring Vulcanizing agents are used. 5. Verfahren gemäß Anspruch i und --, dadurch gekennzeichnet, daß die bei der sogenannten schwefelfreien Vulkanisation des Kautschuks verwandten Beschleuniger Anwendung finden.5. The method according to claim i and -, characterized in that the accelerators used in the so-called sulfur-free vulcanization of rubber are used.
DEK8411A 1950-12-17 1950-12-17 Process for the vulcanization of alkylated and aralkylated lignin Expired DE854092C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK8411A DE854092C (en) 1950-12-17 1950-12-17 Process for the vulcanization of alkylated and aralkylated lignin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK8411A DE854092C (en) 1950-12-17 1950-12-17 Process for the vulcanization of alkylated and aralkylated lignin

Publications (1)

Publication Number Publication Date
DE854092C true DE854092C (en) 1952-10-30

Family

ID=7211958

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK8411A Expired DE854092C (en) 1950-12-17 1950-12-17 Process for the vulcanization of alkylated and aralkylated lignin

Country Status (1)

Country Link
DE (1) DE854092C (en)

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