Results 121 to 130 of about 348 (180)
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Degradation of hydrogenated nitrile rubber
Polymer Degradation and Stability, 1991Abstract Studies of low temperature degradation were carried out on hydrogenated (HNBR), highly saturated (HSN) nitrile rubber and nitrile rubber (NBR) in the temperature range 75°C to 150°C in the presence of air and high-temperature degradation in the presence of nitrogen from room temperature to 800°C.
Susmita Bhattacharjee +2 more
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Hydrogenation of liquid carboxylated nitrile rubber
Die Makromolekulare Chemie, 1992AbstractHydrogenation of liquid carboxylated nitrile rubber (L‐XNBR) was carried out using homogeneous palladium and rhodium catalysts. It was observed that the six‐membered cyclic palladate complex of 2‐benzoylpyridine, 1, reduces the carbon‐carbon double bonds without affecting the nitrile and carboxyl functionality.
Susmita Bhattacharjee +2 more
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Journal of Industrial and Engineering Chemistry, 2013
Abstract In this study, the physical and chemical characteristics of a rubber blend of fluorocarbon rubber (FKM) and hydrogenated Nitrile Butadiene rubber (HNBR) were investigated based on the blend ratio for the purpose improving thermal resistance of HNBR and the low-temperature resistance of FKM.
Youn-Gu Yeo +2 more
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Abstract In this study, the physical and chemical characteristics of a rubber blend of fluorocarbon rubber (FKM) and hydrogenated Nitrile Butadiene rubber (HNBR) were investigated based on the blend ratio for the purpose improving thermal resistance of HNBR and the low-temperature resistance of FKM.
Youn-Gu Yeo +2 more
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Hydrogenated Nitrile Rubber for Improved Durability of Automotive Rubber Parts
SAE Technical Paper Series, 1987<div class="htmlview paragraph">Rubber articles with improved heat resistance and better performance characteristics are becoming of increasing importance for the automotive industry. A new type of elastomer has therefore been developed based on saturated hydrocarbon backbone - for improved heat resistance - with nitrile side groups providing ...
Jean Mirza +2 more
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Hydrogenation of nitrile-butadiene rubber latex with diimide
Applied Catalysis A: General, 2004Hydrogenation of nitrile-butadiene rubber latex via utilization of diimide was investigated by examining hydrogenation efficiency and hydrogenation degree. It has been found that the hydrogenation efficiency, which is defined as the ratio of the amount of hydrogen peroxide consumed for the hydrogenation to the total amount of hydrogen peroxide reacted,
Xinwang Lin, Qinmin Pan, Garry L. Rempel
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Determination of the Degree of Hydrogenation in Hydrogenated Nitrile-Butadiene Rubber (HNBR)
Rubber Chemistry and Technology, 1990Abstract A number of analytical techniques are available for the measurement of the residual unsaturation in HNBR polymers. However, to insure that high-quality HNBR products are produced, it is necessary to use a standard procedure throughout the industry which is quick, accurate, and precise.
A. J. Marshall +3 more
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Structure and Properties of Hydrogenated Nitrile Rubber/Organo-Montmorillonite Nanocomposites
Clays and Clay Minerals, 2010AbstractThe aim of the work was to study the effect of organo-montmorillonite (OMt) on the properties of hydrogenated nitrile rubber (HNBR)/OMt nanocomposites. The nanocomposites were prepared by a melt intercalation method. The structure of the composites was studied by transmission electron microscopy (TEM) and X-ray diffraction (XRD).
Gu, Zheng +4 more
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Homogeneous catalytic hydrogenation of liquid carboxylated nitrile rubber
Journal of Polymer Science Part A: Polymer Chemistry, 1992AbstractHomogeneous catalytic hydrogenation of olefinic bonds in liquid carboxylated nitrile rubber (L‐XNBR) has been carried out selectively in the presence of nitrile and carboxyl functionality using a six‐membered cyclopalladate complex of 2‐benzoyl pyridine as catalyst.
Susmita Bhattacharjee +2 more
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Low-Temperature Properties of Hydrogenated Nitrile Rubber (HNBR)
Rubber Chemistry and Technology, 1991Abstract HNBR, hydrogenated nitrile rubber, is a heat-, oil-, and fuel-resistant elastomer produced by the selective hydrogenation of NBR. As shown in Table I, HNBR is a highly saturated nitrile elastomer consisting of units of acrylonitrile, ethylene, unsaturated butadiene, and hydrogenated vinyl butadiene.
S. Hayashi +3 more
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High-pressure hydrogenation of nitrile rubber: thermodynamics and kinetics
Industrial & Engineering Chemistry Research, 1991Homogeneous catalytic hydrogenation of nitrile rubber (NBR) having various acrylonitrile contents was carried out with tris(triphenylphosphine) chlororhodium(I) under high pressure. Optimum reaction conditions were developed by varying the reaction parameters ― temperature, time, pressure, catalyst concentration, and ...
Susmita Bhattacharjee +2 more
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