Multifunctional viscosity index improvers based on polymers containing sulfonamides
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United States of America Patent
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Oct 18, 1994
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N/A
app pub date -
Oct 29, 1990
filing date -
Oct 29, 1990
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Expired
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Abstract
Multifunctional viscosity index improvers for lubricating oils containing an EPM or EPDM polymer onto which has been grafted an unsaturated reactive monomer and thereafter reacted with amines containing sulfonamide units.
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