DEO PUSPENDU,BROWN KATHRYN,WALLICK DAVID E,SAMMLER ROBERT L,LI YONGFU
申请号：
IN9901/DELNP/2015
公开号：
IN2015DN09901A
申请日:
2015.10.21
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
A process for preparing an aqueous solution of a methylcellulose having anhydroglucose units joined by 1-4 linkages wherein hydroxy groups of anhydroglucose units are substituted with methyl groups such that s23/s26 is 0.36 or less, wherein s23 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 3-positions of the anhydroglucose unit are substituted with methyl groups and wherein s26 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 6- positions of the anhydroglucose unit are substituted with methyl groups, comprises the step of mixing the methylcellulose with an aqueous liquid at a temperature of not higher than 10 �C at a shear rate of at least 1000s-1.
