To provide a pretreatment agent for a vulcanized rubber, which is used for treating a surface of a vulcanized rubber before applying an adhesive to the vulcanized rubber, and which shows excellent adhesive property of the cured adhesive.SOLUTION: A pretreatment agent for a vulcanized rubber is provided which contains a specific nonionic surfactant, water and a specific organic solvent, wherein the specific nonionic surfactant has an HLB value of 4.5 or more and 10.5 or less and is a compound represented by a formula (1), and wherein the specific organic solvent is a compound represented by a formula (2), and wherein the content of the specific nonionic surfactant is 0.5 to 30 mass%. Formula (1): HO-(R11-O)n-R12(1), in the formula (1), R11 represents-CH2-CH2-, -CH(CH3)-CH2-, or-CH2-CH(CH3)-. R12 represents an aliphatic hydrocarbon group. n represents an integer of 1 or larger. A formula (2) : R21R22 N-CO-R23(2), in the formula (2), R21,R22 and R23 represent hydrogen atom or a substituent, R21 or R22 and R23 may bind together to form a ring.SELECTED DRAWING: None
【課題】加硫ゴムに接着剤を塗布する前にその表面を処理するための処理剤であって硬化後の接着剤が優れた接着性を示す加硫ゴム用前処理剤を提供する。【解決手段】特定ノニオン系界面活性剤と水と特定有機溶剤とを含有し、特定ノニオン系界面活性剤がHLB値が4.5以上10.5以下であり式(1)で表される化合物であり、特定有機溶剤が式(2)で表される化合物であり、特定ノニオン系界面活性剤の含有量が0.5~30質量%である、加硫ゴム用接着前処理剤。HO-(R11-O)n-R12(1)式(1)中、R11は-CH2-CH2-、-CH(CH3)-CH2-、又は、-CH2-CH(CH3)-を表す。R12は脂肪族炭化水素基を表す。nは1以上の整数を表す。R21R22N-CO-R23(2)式(2)中、R21、R22及びR23は水素原子又は置換基を表す。R21又はR22とR23とは互いに結合して環を形成してもよい。【選択図】なし
ADHESION PRETREATMENT AGENT FOR VULCANIZED RUBBER
加硫ゴム用接着前処理剤
2022-07-07
Patent
Elektronische Ressource
Japanisch
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2022
|