CROSS-LINKING OF CARBOXYLATED NITRILE RUBBERS BY MEANS OF CROSS-LINKING SYSTEMS CONTAINING RESOL

본 발명은 카르복실화 니트릴 고무, 1종 이상의 레졸 가교제, 1종 이상의 규질 충전제 및 1종 이상의 특정 실란을 기재로 하는 가황성 조성물, 상기 가황성 조성물을 제조하는 방법, 그로부터 가황물을 생산하는 방법, 및 수득된 가황물에 관한 것이다. 가황물은 우수한 기계적 및 동적 특성 및 우수한 압축 영구변형률을 특징으로 한다. Vulcanizable composition comprises (i) a nitrile rubber comprising repeating units of at least one conjugated diene, at least one alpha , beta -unsaturated nitrile and at least one carboxyl group-containing copolymerizable termonomer, (ii) at least one resol, and (iii) at least one silicate filler and at least one silane (I) or a silicate filler modified with silane. Vulcanizable composition comprises (i) a nitrile rubber comprising repeating units of at least one conjugated diene, at least one alpha , beta -unsaturated nitrile and at least one carboxyl group-containing copolymerizable termonomer, (ii) at least one resol, and (iii) at least one silicate filler and at least one silane of formula (I) or a silicate filler modified with silane. R1, R2, R3 : optionally branched 1-25C alkyl or R4-C(=O)-; R4 : optionally branched 1-25C alkyl; R4 : optionally branched 1-14C alkyl, which comprises no or at least one substituent comprising vinyl, -SH, optionally substituted phenyl, methacryloxy and isocyanate, or -R5-(S) x-R5-Si(OR1)(OR2)(OR3); R5 : optionally branched 1-14C alkylene; and x : 1-8. Independent claims are also included for: (1) preparing the vulcanizable composition comprising mixing the components (i), (ii) and (iii) and optionally (iv) at least additional polymers comprising rubbers, preferably styrene-butadiene rubber, nitrile rubber, hydrogenated nitrile rubber, ethylene vinyl acetate copolymer, ethylene-propylene-diene monomer rubber, ethylene acrylate rubber, acrylate rubbers, fluorine rubbers, chloroprene rubbers, chlorinated polyethylene, thermoplastics, preferably polyvinyl chloride, polyamides, polyimides, polyethers, polyesters, polyphenylene sulfide, and/or polycarbonates, (v) halogen-containing compounds, preferably in an amount of 5-10 pts. wt. polychloroprene per 100 pts. wt. of (I) and (vi) no or at least one other rubber additives; (2) producing vulcanizates comprising subjecting the vulcanizable composition to vulcanization at temperatures of 120-200[deg] C, preferably 140-190[deg] C; and (3) the vulcanizate, which is obtained by the above mentioned method. [Image].