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- W2376132648 abstract "Sulfonation of Dahurian larch(Larix gmelinii Rupr.) bark residue after tannin extraction was studied in this paper.Results show:suitable conditions of sulfonation were as follows:alkali dosage 13%(NaOH),sodium sulfite 60%-70%(based on alkali dosage),temperature 140-150 ℃,time 2 h.Lignosulfonate with good property as additive in concrete and as surfactant in oil field can be obtained.This study provided scientific basis for efficient use of bark residue." @default.
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- W2376132648 date "2002-01-01" @default.
- W2376132648 modified "2023-09-26" @default.
- W2376132648 title "PREPARATION AND PROPERTY OF SODIUM LIGNOSULFONATE FROM DAHURIAN LARCH BARK RESIDUE AFTER TANNIN EXTRACTION" @default.
- W2376132648 hasPublicationYear "2002" @default.
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