|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||524/039; 524/038; 524/035|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 140|
Cellulose mixed esters are disclosed having low molecular weights and low degrees of polymerization. These new cellulose mixed esters include cellulose acetate propionate and cellulose acetate butyrate. The esters exhibit solubility in a wide range of organic solvents with minimal viscosity increase, are compatible with a wide variety of resins, and are useful in coatings and inks compositions as binder resins and rheology modifiers.
We claim: 1. A cellulose mixed ester having the following properties:a total degree of substitution per anhydroglucose unit of from 3.08 to 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 C3-C4 esters from about 0.80 to about 1.40, anda degree of substitution per anhydroglucose unit of acetyl of from about 1.20 to about 2.34;an inherent viscosity of from 0.05 to 0.12 dL/g, as measured in a 60/40 (wt./wt.) solution of phenol...