Cationic and anionic lignin amines as flocculants

Details Cationic and anionic lignin amines as flocculants Cationic and anionic lignin amines as flocculants

1988-03-28

1988-11-01

Nielsen, Earl

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210928, B01D 2101, C02F 154

Patent

active

047818409

ABSTRACT:
Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, fluid loss additives, oil well cement additives, corrosion inhibitors, retention aids, cationic dispersants, and tall oil pitch emulsifiers.

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patent: 3912706 (1975-10-01), Rachor et al.
patent: 3935101 (1976-01-01), Briggs
patent: 4455257 (1984-06-01), Hoftiezer et al.

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