Title:
【発明の名称】セルロースエーテル及びその調製方法
Document Type and Number:
Japanese Patent JP2003518145
Kind Code:
A
Abstract:
The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. When the cellulose pulp is southern softwood kraft, the mercerized cellulose pulp has a TAPPI 230 om-89 viscosity greater than 12 cP. The mercerized cellulose pulp is typically substantially free of cellulose III. Mercerized cellulose pulp prepared by this method has a greater percentage of crystalline cellulose II and a smaller crystalline area than that of non-mercerized cellulose pulp. The present invention also provides a method of preparing a cellulose floc comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) treating the mercerized pulp to form the cellulose floc.
Inventors:
Roger Bruce Harding
Susan LH Clenshaw
Paul Eugene Gregory
Dennis Hartnet Broughton
Susan LH Clenshaw
Paul Eugene Gregory
Dennis Hartnet Broughton
Application Number:
JP2000613873A
Publication Date:
June 03, 2003
Filing Date:
April 26, 2000
Export Citation:
Assignee:
BK Holding Corporation
International Classes:
C08B11/00; C08B11/02; C08B11/12; D21C9/00; (IPC1-7): C08B11/00; C08B11/02; C08B11/12
Attorney, Agent or Firm:
Masatake Shiga (7 outside)