Assertion: lignin's derivative | /r/HasProperty | prepared
Facets:
value: from spent pulping liquor
type: OTHER
Source sentences:
text: For example, sulfonic acid derivatives of lignin may be prepared in which the SO =H groups enter the lignin molecule to produce waterand acid-soluble material suitable for use as an emulsifying and dispersing agent as disclosed in U.S. Pat.
text: Although lignin derivatives of improved properties have been prepared by the above and other treatments of the alkali-soluble lignin from spent pulping liquor, none of the derivatives has proven to have as great versatility in dispersant applications as is desirable.