Verfahren zur Herstellung eines Viskositätsindex-Verbesserers.
摘要
Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.
申请公布号
DE69011032(D1)
申请公布日期
1994.09.01
申请号
DE1990611032
申请日期
1990.10.05
申请人
EXXON CHEMICAL PATENTS INC., FLORHAM PARK, N.J., US
发明人
CHUNG, DAVID YEN-LUNG, EDISON, NEW JERSEY 08820, US;STRUGLINSKI, MARK JOSEPH, BRIDGEWATER, NEW JERSEY 08807, US