C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 2/00 (2006.01) C08F 220/10 (2006.01) C08F 265/04 (2006.01) C08F 265/06 (2006.01) C08L 51/00 (2006.01) C10M 119/12 (2006.01) C10M 145/14 (2006.01)
Patent
CA 2229366
A process for the preparation of continuously variable-composition copolymers by effecting gradual changes in monomer composition during the polymerization is disclosed. Poly(meth)acrylate copolymers made by the process of the present invention have improved lubricating oil additive properties, for example, as pour point depressants, when compared to related polymer additives made by conventional means.
On divulgue un procédé pour la préparation de copolymères de composition continuellement variable par la réalisation de changements graduels dans la composition des monomères au cours de la polymérisation. Des copolymères de poly(méth)acrylate fabriqués à l'aide du procédé décrit dans la présente invention possèdent des propriétés améliorées d'additif pour huiles lubrifiantes, par exemple, comme améliorant de point d'écoulement, si l'on compare aux additifs polymériques apparentés fabriqués à l'aide des méthodes traditionnelles.
Bollinger Joseph Martin
Gore Robert Howard
Kinker Bernard George
Pierce David Arthur
Evonik Rohmax Additives Gmbh
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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