Viscosity/drag reducing additive for high solids black liquor
AssigneeNalco Chemical Company
InventorsDodd W. Fong, Daniel V. Diep, Ralph W. Kaesler
Life of this patent
Estimating the term…
Abstract
A high solids black liquor having the property of reduced turbulent flow/drag comprising a high solids black liquor which contains a few parts per million of a water soluble terpolymer containing the repeating units in the following mole percentages: ##STR1## wherein R is a lower alkyl group from 1-6 carbon atoms, M is H or alkali metal, said terpolymer having a Reduced Specific Viscosity of at least 25.
Claims2
A high solids black liquor having the property of reduced turbulent flow/drag comprising a high solids black liquor which has a solid content of at least 60% by weight and which contains a few parts per million of a water soluble terpolymer containing the following repeating units in the following mole percentages:
- ##STR4## wherein R is a lower alkyl group having from 1-6 carbon atoms, M is H, NH.sub.4 or alkali metal, said terpolymer having a Reduced Specific Viscosity of at least 25, said terpolymer being present in an amount sufficient to reduce the viscosity of the black liquor.
Dependencies are inferred from the claim text.