| 发明名称 |
PURIFICATION PROCESS FOR PARTLY-HYDROLYZED CELLULOSE |
| 摘要 |
A method of recovering purified partly-hydrolyzed cellulose (36) from a composition (14) comprising partly-hydrolyzed cellulose and an acid, such as sulfuric acid. A base (28) having a cation that forms a precipitate with the anion of the acid is added to the composition. For example, a base such as barium hydroxide is added to form a sulfate precipitate. The precipitate (38) is then separated from the partly-hydrolyzed cellulose (36), thus reducing its acid content. The method may include additional steps of centrifugation (18) of the composition, breaking-up agglomerations (44) in the composition after precipitation, and dialysis (42). |
| 申请公布号 |
US2015233056(A1) |
申请公布日期 |
2015.08.20 |
| 申请号 |
US201214422619 |
申请日期 |
2012.08.21 |
| 申请人 |
Lockhart James M. |
发明人 |
Lockhart James M. |
| 分类号 |
D21H11/04;D21C3/04;D21C3/02;C08B15/02;D21C11/00 |
主分类号 |
D21H11/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of recovering purified partly-hydrolyzed cellulose from a composition comprising partly-hydrolyzed cellulose and an acid, comprising the steps of:
(a) adding a base to the composition of partly-hydrolyzed cellulose and acid, said base having a cation that forms a precipitate with an anion of the acid, thereby forming the precipitate; and (b) separating the partly-hydrolyzed cellulose in the product of step (a) from the precipitate. |
| 地址 |
Vancouver CA |
