| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide cellulose-mixed esters having low molecular weights and low degrees of polymerization, which are soluble in a wide range of organic solvents, are miscible with many resins, and are useful in coatings and inks compositions as binder resins and rheology modifiers. <P>SOLUTION: The cellulose-mixed ester comprises the following properties: a total degree of substitution per anhydroglucose unit of from about 3.08 to about 3.50, having the following substitutions: a degree of substitution per anhydroglucose unit of hydroxyl of no more than about 0.70, a degree of substitution per anhydroglucose unit of C<SB POS="POST">3</SB>-C<SB POS="POST">4</SB>esters from about 0.80 to about 1.40, and a degree of substitution per anhydroglucose unit of acetyl of from about 1.20 to about 2.34; an inherent viscosity of from about 0.05 to about 0.15 dL/g, as measured in a 60/40 (wt./wt.) solution of phenol/tetrachloroethane at 25°C; a number average molecular weight of from about 1,000 to about 5,600; a weight average molecular weight of from about 1,500 to about 10,000; and a polydispersity of from about 1.2 to about 3.5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
