LAMINATE AND TIRE

• Main Authors: KOTANI KYOHEI, OTSUKA HIDEYUKI
• Format: Patent
• Language: English; Japanese
• Published: 19.06.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

To provide a laminate in which rubber layers are bonded to each other with sufficient adhesive strength and which has sufficient strength.SOLUTION: The present invention provides a laminate 1 of a rubber layer (A)2 and a rubber layer (B)3. The rubber layer (A) is composed of a rubber composition containing a rubber component and a metal salt containing Group 3-12 elements of the periodic table; the rubber component includes a modified diene-based rubber formed by modifying a diene-based rubber with a tetrazine derivative of formula (1) [where X1 and X2 are each independently a pyridyl group or a pyrimidinyl group, and Y1 and Y2 are each independently a single bond or a divalent hydrocarbon group]; the modified diene-based rubber is modified by blending at least 1 mol% of the tetrazine derivative with the diene monomer unit of the diene-based rubber; and the content of the metal salt in the rubber composition is 10-60 pts.mass with respect to 100 pts.mass of the rubber component.SELECTED DRAWING: Figure 1 【課題】ゴム層同士が十分な接着強度で接合されており、且つ十分な強度を有する積層体を提供する。【解決手段】ゴム層（Ａ）２とゴム層（Ｂ）３との積層体１であって、ゴム層（Ａ）が、ゴム成分と、周期表第３族～第１２族の元素を含む金属塩とを含むゴム組成物からなり、前記ゴム成分が、ジエン系ゴムを式（１）：TIFF2024082095000008.tif21129［Ｘ１及びＸ２は、独立してピリジル基又はピリミジニル基；Ｙ１及びＹ２は、独立して単結合又は二価の炭化水素基である。］で表されるテトラジン誘導体で変性してなる変性ジエン系ゴムを含み、該変性ジエン系ゴムは、前記テトラジン誘導体を前記ジエン系ゴムのジエンモノマー単位に対して１ｍｏｌ％以上配合して変性されており、前記ゴム組成物中の前記金属塩の含有量が、前記ゴム成分１００質量部に対して１０～６０質量部であることを特徴とする、積層体である。【選択図】図１