Assertion: lignin | /r/HasProperty | prepared by the process of this invention
Facets:
value: from lignin
type: LOCATION
Source sentences:
text: Although lignin from the pulping of any of the common pulp producing sources has been found generally satisfactory for the purpose of this invention, lignin from the pulping of wood chips is preferred, the highest quality products being prepared by the process of this invention from lignin resulting from the alkaline pulping of softwood wood chips.