专利检索 ap:("E I DU PONT DE NEMOURS AND COMPANY") AND inv:"CHARLES R. POWLEY" 第 1 页

1.

发明申请
ENZYMATICALLY POLYMERIZED GELLING DEXTRANS 审中-公开

公开(公告)号：US20180355072A1

公开(公告)日：2018-12-13

申请号：US16111514

申请日：2018-08-24

申请人： E I DU PONT DE NEMOURS AND COMPANY

发明人： RAKESH NAMBIAR , RONG GUAN , QIONG CHENG , ROBERT DICOSIMO , JAYME L. PAULLIN , YUANFENG LIANG , CHARLES R. POWLEY , YEFIM BRUN

IPC分类号： C08B37/02 , C08L5/02 , C12P19/08 , C11D3/22

CPC分类号： C08B37/0021 , C08L5/02 , C11D3/222 , C12P19/08

摘要： Compositions are disclosed herein comprising dextran that comprises (i) 87-93 wt % glucose linked at positions 1 and 6; (ii) 0.1-1.2 wt % glucose linked at positions 1 and 3; (iii) 0.1-0.7 wt % glucose linked at positions 1 and 4; (iv) 7.7-8.6 wt % glucose linked at positions 1, 3 and 6; and (v) about 0.4-1.7 wt % glucose linked at (a) positions 1, 2 and 6, or (b) positions 1, 4 and 6. Aqueous forms of this composition have enhanced viscosity profiles. Further disclosed are methods of using compositions comprising dextran, such as increasing the viscosity of an aqueous composition. Enzymatic reactions for producing dextran are also disclosed.