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Grafted copolymers and their use as additives for lubricating oils

Patent ·
OSTI ID:5382707
Graft copolymer is formed by reacting at least one polymerizable vinyl compound, in monomeric or polymerized form, with a hydrogenated polymer or copolymer selected from the hydrogenated homopolymers of conjugated dienes of 4-6 carbon atoms, the hydrogenated copolymers of at least 2 conjugated dienes and the hydrogenated copolymers of styrene and conjuated dienes of 4-6 carbon atoms, said hydrogenated polymer or copolymer having an average molecular weight ranging from 10,000 to 300,000 and a residual olefinic unsaturation lower than 15%. 12 claims.
Assignee:
Institut Francais du Petrole
Patent Number(s):
US 4181618
OSTI ID:
5382707
Country of Publication:
United States
Language:
English

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