| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a derivatized microfibrillar cellulose derivatized to comprise substituents that provide electrostatic and/or steric functionality. <P>SOLUTION: This invention relates to the derivatized microfibrillar cellulose derivatized to comprise the substituents that provide the electrostatic and/or steric functionality, wherein: a group that provides the electrostatic functionality comprises anionic charge; and the derivatized microfibrillar cellulose is derived from (1) purified, optionally bleached wood pulps produced from sulfite, kraft, or prehydrolyzed kraft pulping processes, and (2) purified cotton linters. The degree of substitution is between about 0.02 and about 0.5. The derivatized microfibrillar polysaccharide is characterized by forming a gel in water at least at one point in the concentration range of from 0.05 to 0.99 wt.% based on the total weight of the gel. <P>COPYRIGHT: (C)2013,JPO&INPIT |
