Assertion: lignin | /r/HasProperty | oxidized by ozone
Facets:
Source sentences:
text: A waterand acid-soluble dispersing agent substantially free of organically bound sulfur, comprising lignin oxidized by ozone while maintained in aqueous alkaline solution at a temperature between about 0 C. and about 90 C., said ozone being absorbed by and reacted with said lignin in an amount between 5 and 30% of the weight of said lignin.
text: A dispersing agent according to claim 3 wherein said lignin is oxidized by ozone in an amount between 5 and 20% of the weight of said lignin.