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  • HNBR
  • Various antioxidants are evaluated in hydrogenated nitrile-butadiene rubber (HNBR), polyacrylic elastomer (ACM) and ethylene-acrylic elastomer (EAM), polymers frequently used in applications requiring high heat and oil resistance. (thefreedictionary.com)
  • In a second post-polymerization reaction, the HNBR product is carboxylated with a carboxylic acid such as maleic acid to produce carboxylated hydrogenated nitrile-butadiene rubber (XHNBR). (thefreedictionary.com)
  • amides
  • The reduction of nitriles and amides to the corresponding amines with tetra- n -butylammonium borohydride in dichloromethane has been reported, in which the other functional groups such as ester, nitro, and halogen attached to the aromatic ring are not affected. (erowid.org)
  • The reduction of nitriles and amides to the amines is a very important, but not so easy organic transformation. (erowid.org)
  • The improved methods for the reduction of nitriles 1 and amides 2 with complex metal hydrides have been so far reported. (erowid.org)
  • We wish herein to describe another convenient and efficient method for the reduction of nitriles and amides to the amines with tetra- n -butylammonium borohydride 3-6 in refluxing dichloromethane, in which the chemospecificity of tetra- n -butylammonium borohydride toward organic cyano and amide compounds was observed. (erowid.org)
  • For instance, nitriles can be obtained by a direct dehydration of primary amides RCONH2, and vice versa, primary amides - by an addition of water to nitriles. (perfumerflavorist.com)
  • Conversions of nitriles to N-substituted secondary or tertiary amides are also quite practical, although they often require more than one chemical step. (perfumerflavorist.com)
  • free
  • Browse companies that make Nitrile-Butadiene-Polymer Roofing and view and download their free cad details, revit BIM files, specifications and other content relating to Nitrile-Butadiene-Polymer Roofing as well as other product information formated for the architectural community. (arcat.com)
  • vivo
  • All the test nitriles liberated cyanide ions both in vivo and in vitro, with the exception of benzonitrile, although the extent of liberation and the effect of carbon tetrachloride (CCl 4 ) pretreatment on the mortality of animals differed among nitriles. (springer.com)
  • chemical
  • A nitrile is a chemical compound with a - C = N functional group . (wikipedia.org)
  • Acute toxicity and metabolism of 21 nitriles in mice were studied in relation to their chemical structures. (springer.com)
  • In order to evidence new reactions of prebiotic synthesis in aqueous solution between the S-containing compounds, such as alkanethiols, which can be obtained in gaseous phase during the simulation of the evolution of primitive atmosphere, and the malonic nitriles which are generally considered as important intermediates in the Chemical Evolution, a kinetic study on the eventual reactions of ethanethiol with cyanoacetaldehyde and malononitrile has been carried out. (springer.com)