24-03-2016 дата публикации
Номер: US20160083546A1
Принадлежит:
The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired. 2. The method of claim 1 , wherein the surface of the solid cellulose-containing material exhibits greater hydrophobicity relative to the surface of the solid cellulose-containing material without said treating.3. The method of claim 1 , wherein the base is non-nucleophilic.4. The method of claim 3 , wherein the base is organic.5. The method of claim 4 , wherein the organic base is selected from the group consisting of aziridines claim 4 , azetidines claim 4 , piperazines claim 4 , piperidines claim 4 , pyridines claim 4 , bipyridines claim 4 , terpyridines claim 4 , dihydropyridines claim 4 , morpholines: N-alkylmorpholines claim 4 , 1 claim 4 ,4-diazabicyclo[2.2.2]octanes claim 4 , 1 claim 4 ,8-diazabicycloundecanes claim 4 , 1 claim 4 ,8-diazabicycloundecenes claim 4 , dimethylated pentylamines claim 4 , trimethylated pentylamines claim 4 , pyrimidines claim 4 , pyrroles claim 4 , pyrrolidines claim 4 , pyrrolidinones claim 4 , indoles claim 4 , indolines indanones claim 4 , benzindazones claim 4 , imidazoles claim 4 , benzimidazoles claim 4 , imidazolones claim 4 , imidazolines claim 4 , oxazoles claim 4 , isoxazoles claim 4 , oxazolines claim 4 , oxadiazoles claim 4 , thiadiazoles claim 4 , carbazoles claim 4 , quinolines claim 4 , isoquinolines claim 4 , naphthyridines claim 4 , triazines claim 4 , triazoles claim 4 , tetrazoles claim 4 , triethylamines claim 4 ...
Подробнее