Dispersant VI improver

Details Dispersant VI improver Dispersant VI improver

1976-10-18

1977-07-05

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

260878R, C10M 124

Patent

active

040338886

ABSTRACT:
Lubricating oil additives having both dispersant and viscosity-index improving properties are prepared by reacting a block copolymer with maleic anhydride and an alkane polyol. The block copolymer has the general configuration A-B wherein A is a monoalkenyl arene block and B is a selectively hydrogenated conjugated diene block having between 75 and 98 percent hydrogenated double bonds.

REFERENCES:
patent: 3448174 (1969-06-01), Loveless et al.
patent: 3954812 (1976-05-01), Puskas et al.

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