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US 4,892,898 AGranted
Water soluble polymers containing allyloxybenzenesulfonate monomers
AssigneeNational Starch and Chemical Corporation
InventorsJohn C. Leighton, Michael J. Sanders
Life of this patent
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Abstract
Water soluble polymers comprising at least one mole percent of a recurring monomer unit represented by the chemical structure ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently hydrogen or C.sub.1 -C.sub.6 alkyl; and X is hydrogen, an alkali or alkaline earth metal or ammonium are disclosed.
Claims7
A water soluble polymer consisting essentially of 1 to 20 mole percent of a recurring monomer unit (A) represented by the chemical structure:
- ##STR5## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently hydrogen or C.sub.1 -C.sub.6 alkyl;
- and X is hydrogen, an alkali or alkaline earth metal or ammonium, and 80 to 99 mole percent of a monomer unit (B) represented by the structure ##STR6## wherein R.sub.5 is hydrogen or C.sub.1 -C.sub.6 alkyl;
- R.sub.6 is OX' or NR.sub.7 R.sub.8 ;
- R.sub.7 and R.sub.8 are independently hydrogen, C.sub.1 -C.sub.6 alkyl, or an alkyloxyether or alcohol;
- and
- X' is hydrogen, C.sub.1 -C.sub.6 alkyl, hydroxyalkyl, an alkali or alkaline earth metal or ammonium.
3 more elements
Dependencies are inferred from the claim text.