公开(公告)号：US09567707B2

公开(公告)日：2017-02-14

申请号：US14422619

申请日：2012-08-21

Applicant: James M. Lockhart

Inventor： James M. Lockhart

IPC: C08B15/02 ,  C08B1/00 ,  C08L1/04 ,  A61K31/717 ,  D21H11/04 ,  D21C11/00 ,  D21C3/02 ,  D21C3/04

CPC classification number: D21H11/04 ,  C08B15/02 ,  C08H8/00 ,  D21C3/02 ,  D21C3/04 ,  D21C9/004 ,  D21C11/0007

Abstract: 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).

Abstract translation: 从包含部分水解的纤维素和酸如硫酸的组合物（14）中回收纯化的部分水解的纤维素（36）的方法。 向组合物中加入具有与酸阴离子形成沉淀物的阳离子的碱（28）。 例如，加入碱如氢氧化钡以形成硫酸盐沉淀。 然后将沉淀物（38）与部分水解的纤维素（36）分离，从而降低其酸含量。 该方法可以包括组合物离心（18），沉淀后组合物中的分解团聚体（44）和透析（42）的附加步骤。

公开(公告)号：US20150233056A1

公开(公告)日：2015-08-20

申请号：US14422619

申请日：2012-08-21

Applicant: James M. Lockhart

Inventor： James M. Lockhart

IPC: D21H11/04 ,  D21C3/04 ,  D21C3/02 ,  C08B15/02 ,  D21C11/00

CPC classification number: D21H11/04 ,  C08B15/02 ,  C08H8/00 ,  D21C3/02 ,  D21C3/04 ,  D21C9/004 ,  D21C11/0007

Abstract: 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).

Abstract translation: 从包含部分水解的纤维素和酸如硫酸的组合物（14）中回收纯化的部分水解的纤维素（36）的方法。 向组合物中加入具有与酸阴离子形成沉淀物的阳离子的碱（28）。 例如，加入碱如氢氧化钡以形成硫酸盐沉淀。 然后将沉淀物（38）与部分水解的纤维素（36）分离，从而降低其酸含量。 该方法可以包括组合物离心（18），沉淀后组合物中的分解团聚体（44）和透析（42）的附加步骤。