DE867616C - Process for increasing the bond strength between metals and rubber or rubber-like substances using isocyanates - Google Patents

Process for increasing the bond strength between metals and rubber or rubber-like substances using isocyanates

Info

Publication number
DE867616C
DE867616C DEC3769A DEC0003769A DE867616C DE 867616 C DE867616 C DE 867616C DE C3769 A DEC3769 A DE C3769A DE C0003769 A DEC0003769 A DE C0003769A DE 867616 C DE867616 C DE 867616C
Authority
DE
Germany
Prior art keywords
rubber
metals
isocyanates
substances
increasing
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
DEC3769A
Other languages
German (de)
Inventor
Bruno Dipl-Chem Dr Hauschulz
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.)
Continental AG
Original Assignee
Continental Gummi Werke 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
Application filed by Continental Gummi Werke AG filed Critical Continental Gummi Werke AG
Priority to DEC3769A priority Critical patent/DE867616C/en
Application granted granted Critical
Publication of DE867616C publication Critical patent/DE867616C/en
Expired legal-status Critical Current

Links

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
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/50—Additional features of adhesives in the form of films or foils characterized by process specific features
    • C09J2301/504—Additional features of adhesives in the form of films or foils characterized by process specific features process of pretreatment for improving adhesion of rubber on metallic surfaces

Description

Verfahren zur Erhöhung der Bindungsfestigkeit zwischen Metallen und Kautschuk bzw. kautschukartigen Stoffen unter Verwendung von Isocyanaten Zur Herstellung guter Bindungen zwischen Metallen und Kautschuk sowie Kautschukmischungen werden in vielen Fällen Isocyanate verwendet. Die Metalle, insbesondere Eisen, werden im allgemeinen zur Entfernung von Fett- und Rostschichten bekannten Reinigungsverfahren unterworfen. Diese Reinigungsverfahren haben sich als notwendig erwiesen, um bestmögliche Haftfestigkeiten zu erzielen. Sie sind umständlich und können in vielen Fällen nur unter besonderen Vorsichtsmaßnahmen und großem Aufwand durchgeführt werden. In besonders gelagerten Fällen ist eine derartige Reinigung gar nicht durchzuführen. So macht z. B. die Reinigung sehr dünner Stahldrähte von Ziehseifen, Korrosionsschutzmitteln usw. erhebliche Schwierigkeiten, insbesondere, wenn diese dünnen Drähte zu Seilchen verflochten sind. Es wurde nun gefunden, daß auch ohne umständliche chemische Reinigung eine Verbesserung der Bindungsfestigkeit erzielt werden kann, wenn man derartige Metallteile, Drähte, Seilchen usw. vor der Behandlung mit den Isocyanaten einem Erhitzungsprozeß unterwirft und die bindungsmindernden Überzüge thermisch zerstört. Die Bindungsfestigkeiten werden durch diese thermische Vorbehandlung gleichmäßig und konstant und in einer Weise erhöht, daß die umständliche und kostspielige chemische Reinigung nicht mehr nötig ist. Beispiele r. Beim Tauchen eines Stahlseilchens in eine zo°/oige Lösung von Triphenylmethantriisocyanat in Methylenchlorid ergaben sich nach Aufvulkanisieren einer Kautschuktestmischung dynamische Bindungsfestigkeiten von r28, go; 118-und- zoö Minuten Laufzeit in der dynamischen Haftprüfmaschine.Process for increasing the bond strength between metals and Rubber or rubber-like substances using isocyanates for production good bonds between metals and rubber and rubber compounds isocyanates used in many cases. The metals, especially iron, are in the general cleaning processes known for removing grease and rust layers subject. These cleaning procedures have been found to be necessary to get the best possible To achieve adhesive strengths. They are cumbersome and in many cases only can be carried out with special precautionary measures and great effort. Especially In stored cases, such a cleaning is not to be carried out at all. So does z. B. the cleaning of very thin steel wires from drawing soaps, anti-corrosion agents etc. considerable difficulties, especially when these thin wires become cords are intertwined. It has now been found that even without laborious chemical cleaning an improvement in bond strength can be achieved if such Metal parts, wires, cords, etc. before being treated with the isocyanates Subjects to the heating process and thermally destroys the bond-reducing coatings. This thermal pretreatment makes the bond strengths even and constant and increased in a way that the cumbersome and costly chemical Cleaning is no longer necessary. Examples r. When diving a steel cable in gave a zo% solution of triphenylmethane triisocyanate in methylene chloride after vulcanizing one Rubber test compound dynamic Bond strengths of r28, go; 118-and-zoö minutes of running time in the dynamic Pull-off testing machine.

2. Ein in Methylenchlorid gereinigtes Stahlseilchen ergab nach Tauchung in ro0/0ige Triphenylzriethantrüsocyänatlösung dynamische Bindungsfestigkeiten von ro5, r22, 95 und 113 Minuten Laufzeit.2. A steel cord cleaned in methylene chloride gave dynamic bond strengths of ro5, r22, 95 and 113 minutes running time after immersion in ro0 / 0 triphenylzriethane triosecyanate.

.3. Die Reinigung von Stahlseilchen nach folgenden Verfahrensschritten: a) Kochen in Seifenlösung, b) Waschen in Wasser, c) Reinigen in verdünnter Salzsäure, d) Waschen in Wasser, e) Wäschen in Aceton ergab nach erfolgter Trocknung und Tauchung der Seilchen in eine zo°/oige Lösung von Triphenylmethantriisocyanat dynamische Bindungsfestigkeiten von 138, 142, über 150 und 128 Minuten Laufzeit..3. The cleaning of steel cables according to the following process steps: a) boiling in soap solution, b) washing in water, c) cleaning in dilute hydrochloric acid, d) washing in water, e) washing in acetone resulted after drying and immersion the rope in a zo% solution of triphenylmethane triisocyanate dynamic Bond strengths of 138, 142, over 150 and 128 minutes of running time.

q.. Die Stahlseilchen wurden ohne: `vorhergehende Reinigung auf 2oo° erhitzt. Danach wurden sie in eine zo%ige Triphenylmethantriisocyanatlösung getaucht. Nach Aufvulkanisieren der Testmischung ergaben sich dynamische Bindungsfestigkeiten von 127, über =50, 135 und über 150 Minuten Laufzeit.q .. The steel cables were heated to 2oo ° without: `prior cleaning. They were then immersed in a 10% strength triphenylmethane triisocyanate solution. After vulcanization of the test mixture, dynamic bond strengths of 127, over = 50, 135 and over 150 minutes of running time were obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Erhöhung der Bindungsfestigkeit zwischen Metallen, insbesondere 'Eisen, und Kautschuk und seinen Mischungen bzw. kautschukartigen Stoffen, wie z. B. Butadienpolymerisaten und Mischpolymerisaten und deren Mischungen, unter Verwendung von Isocyanaten, dadurch gekennzeichnet, daB die Metalle vor der Behandlung mit den Isocyanaten erhitzt werden, vorzugsweise auf Temperaturen über roo°. PATENT CLAIM: Process for increasing the bond strength between metals, in particular iron, and rubber and its mixtures or rubber-like substances, such as. B. butadiene polymers and copolymers and mixtures thereof, using isocyanates, characterized in that the metals are heated prior to treatment with the isocyanates, preferably to temperatures above roo °.
DEC3769A 1951-02-02 1951-02-02 Process for increasing the bond strength between metals and rubber or rubber-like substances using isocyanates Expired DE867616C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC3769A DE867616C (en) 1951-02-02 1951-02-02 Process for increasing the bond strength between metals and rubber or rubber-like substances using isocyanates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC3769A DE867616C (en) 1951-02-02 1951-02-02 Process for increasing the bond strength between metals and rubber or rubber-like substances using isocyanates

Publications (1)

Publication Number Publication Date
DE867616C true DE867616C (en) 1953-02-19

Family

ID=7013175

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC3769A Expired DE867616C (en) 1951-02-02 1951-02-02 Process for increasing the bond strength between metals and rubber or rubber-like substances using isocyanates

Country Status (1)

Country Link
DE (1) DE867616C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203946B (en) * 1951-10-11 1965-10-28 Dunlop Rubber Co Process for firmly bonding natural or synthetic rubber to ferrous metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203946B (en) * 1951-10-11 1965-10-28 Dunlop Rubber Co Process for firmly bonding natural or synthetic rubber to ferrous metals

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