Viscosity index improver for lubricant compositions

Viscosity index improver for lubricant compositions

A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/alpha-olefin interpolymer. The ethylene/alpha-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the h...

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Hauptverfasser: HUGHES MORGAN M, KENNY PAMELA J, RATH GARY L, CONG RONGJUAN, LI PI SHAN COLIN, KUHLMAN ROGER L
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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creator HUGHES MORGAN M
KENNY PAMELA J
RATH GARY L
CONG RONGJUAN
LI PI SHAN COLIN
KUHLMAN ROGER L
description A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/alpha-olefin interpolymer. The ethylene/alpha-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.
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subjects CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
title Viscosity index improver for lubricant compositions
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