| 发明名称 |
PROCESS FOR PREPARING AN AQUEOUS SOLUTION OF A METHYLCELLULOSE |
| 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 1000 s−1. |
| 申请公布号 |
US2016081384(A1) |
申请公布日期 |
2016.03.24 |
| 申请号 |
US201414771891 |
申请日期 |
2014.04.08 |
| 申请人 |
Dow Global Technologies LLC |
发明人 |
Deo Puspendu;Brown Kathryn;Wallick David E.;Sammler Robert L.;Li Yongfu |
| 分类号 |
A23L1/308;A61K31/717;A23L1/0534;C08J3/03;C08L1/28 |
主分类号 |
A23L1/308 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. 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 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, wherein the process comprises the step of mixing the methylcellulose with an aqueous liquid at a shear rate of at least 1000 s−1. |
| 地址 |
Midland, MI US |
