• I know the bond angles inside the benzene are 120 degrees, and the Carbon attached to the benzene ring attaches at a 120 degree angle, but what of the anhydride ring, or the other carbons? (physicsforums.com)
  • Alkenyl succinic anhydrides (ASA) are modified five-membered succinic anhydrides bearing a branched iso-alkenyl chain (C14 to C22). (wikipedia.org)
  • 30% higher reaction yields were achieved with a pre-cleaned cracked petroleum distillate in an autoclave at 210 °C and it was found that the hydrolysis of the succinic anhydride can already be carried out with steam. (wikipedia.org)
  • However, for later use in cleaners and detergents, clear (meaning polymer-free) and less dark colored alkenyl succinic anhydride (ASA) were needed. (wikipedia.org)
  • The use of alkenylsuccinic anhydrides to hydrophobize cellulose-based (cotton) textiles (first patented in 1959) and the transfer of this concept to the hydrophobization of paper using iso-octadecenyl succinic anhydrides (C18-ASA) in 1963 required liquid, particle-free colours with a colour as light as possible. (wikipedia.org)
  • After initial difficulties in using ASA for paper sizing (particularly the rapid hydrolysis to alkenyl succinic acids and the formation of poorly soluble calcium salts in hard water and deposits in the paper machine), process parameters could be adjusted to make alkenyl succinic anhydrides the most important sizing agents in the US. (wikipedia.org)
  • All metallic oxides that react with water to form a base solution are considered basic anhydrides, including lithium, magnesium, sodium and calcium oxides. (reference.com)
  • Anhydrides are very versatile as they can undergo condensation reactions to give polyesters, -imides, -ester-amides, and -ester-imides. (sigmaaldrich.com)
  • In the United States alkenylsuccinic anhydrides are the preferred paper sizing agents, whereas in Europe, alkyl ketene dimers (AKDs) predominate. (wikipedia.org)
  • What is an example of a basic anhydride? (reference.com)
  • Only the oxides formed by the alkali metals and alkali earth metals, Groups I and II on the periodic table respectively, are basic anhydrides. (reference.com)
  • All of the basic anhydrides, which have a very high charge and small size, can be produced by removing the water from their corresponding hydroxide at high temperatures. (reference.com)
  • Global Tri-Mellitic-Anhydride(TMA)Industry 2016 Market Research Report ​is a new market research publication announced by Reportstack. (pitchengine.com)
  • The Tri-Mellitic-Anhydride (TMA) market analysis is provided for the international market including development history, competitive landscape analysis, and major regions' development status. (pitchengine.com)
  • Unbranched 1-alkenylsuccinic anhydrides, which can be obtained from 1-alkenes, are solid at room temperature and not suited for engine sizing from aqueous emulsion. (wikipedia.org)
  • additional anhydrides commonly used for this application are listed in the Crosslinking Agents and Additives for Epoxides section. (sigmaaldrich.com)