Terpolymers of acrylamide, alkylacrylamide and betaine monomers
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United States of America Patent
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Mar 17, 1987
Grant Date -
N/A
app pub date -
Dec 30, 1985
filing date -
Dec 30, 1985
priority date (Note) -
Expired
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Abstract
A water soluble terpolymer having the structure: ##STR1## wherein x is selected from the group consisting of ##STR2## wherein x is about 1 to about 95 mole percent; y is about 0.1 to about 5.0 mole percent; R.sub.1 is methyl or hydrogen; z is about 1 to about 30 mole percent; R.sub.2 is an alkyl group of 1-5 carbon atoms; R.sub.3 is an alkyl group of 3 to 4 carbon atoms; R.sub.4 is an alkyl group of 1-5 carbon atoms; and R.sub.5 is an alkyl group of 4-20.
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