C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/28 (2006.01) C04B 24/26 (2006.01) C08G 18/62 (2006.01)
Patent
CA 2436791
Alkoxylated acrylate and methacrylate macromonomers are disclosed that are useful in the preparation of water-reducing additives for concrete, ultraviolet light-curable adhesives, and water-dispersed polyurethanes. The macromonomers are suitably prepared by alkoxylating a hydroxyalkylacrylate or hydroxyalkylmethacrylate in the presence of a DMC catalyst using the continuous addition of starter (CAOS) in order to prevent the formation of by- products during the fabrication of the macromonomer.
Cette invention se rapporte à des macromonomères d'acrylate et de méthacrylate alcoxylés, qui servent à la préparation d'additifs de réduction d'eau dans le béton, d'adhésifs photodurcissables aux ultraviolets et de polyuréthanes dispersés à l'eau. Ces macromonomères sont préparés de façon appropriée par alcoxylation d'un hydroxyalkylacrylate ou d'un hydroxyalkylméthacrylate en présence d'un catalyseur DMC, avec adjonction continue d'un initiateur (CAOS), pour empêcher la formation de sous-produits pendant la fabrication dudit macromonomère.
Arco Chemical Technology L.p.
Coatex Sas
Osler Hoskin & Harcourt Llp
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