C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 212/02 (2006.01) C08C 19/00 (2006.01) C08C 19/30 (2006.01) C08C 19/42 (2006.01) C08F 8/00 (2006.01) C08F 236/00 (2006.01) C08F 279/00 (2006.01) C10M 143/10 (2006.01) C10M 143/16 (2006.01)
Patent
CA 2063674
O.Z. 0050/42318 Abstract of the Disclosure: The novel alkadiene/vinyl- aromatic copolymers which contain side groups and have a random, block-like or star-like structure and whose polymerized alkadiene comonomer units are partially or completely selectively hydrogenated, and which contain one or more side groups having one or more radicals capable of (4+2) cycloaddition (Diels-Alder reaction) with dienophiles are suitable as such as viscosity index (VI) improvers or can be used for the preparation of dispersant VI improvers. For this purpose, they are reacted with one or more dienophiles which are capable of a Diels-Alder (4+2) cycloaddition reaction and preferably contain strongly polar functional groups. The resulting selectively hydrogenated alkadiene/vinylaromatic co- polymers having one or more side groups which constitute a (4+2) cycloadduct or a Diels-Alder adduct can be modified in their performance characteristics by further reaction with ammonia, an organic amine, an alkylene oxide, a polyalkylene oxide and/or a condensate of ammonia and/or an organic amine with an alkylene oxide.
Bender Dietmar
Bronstert Klaus
Mach Helmut
Basf Aktiengesellschaft
Robic
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