C - Chemistry – Metallurgy – 08 – B
Patent
C - Chemistry, Metallurgy
08
B
C08B 3/00 (2006.01) C08B 3/02 (2006.01) C08B 3/06 (2006.01) C08B 3/08 (2006.01)
Patent
CA 2208273
The present invention relates to a process for preparing cellulose esters having a total DS/AGU of 0.1 to 3.0, said process consisting of contacting the following: (i) a cellulose material, (ii) a solubilizing amount of a solvent system comprising a carboxamide diluent or a urea-based diluent, (iii) an acylating reagent, and (iv) an insoluble sulfonic acid resin catalyst.
L'invention porte sur un procédé de préparation d'esters cellulosiques présentant un DS/AGU de 0,1 à 3,0 et consistant à mettre en contact: (i) un matériau cellulosique, (ii) une quantité solubilisante de diluants (carboxamide ou diluant à base urée), (iii) un réactif acylant, (iv) un catalyseur à base de résine sulfonique acide insoluble.
Eastman Chemical Company
Edgar Kevin Joseph
Gowling Lafleur Henderson Llp
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