C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 8/04 (2006.01) C08C 19/02 (2006.01)
Patent
CA 2311371
The invention relates to a method for selective hydrogenation of ethylene unsaturated double bonds in polymerizates (P), whereby the polymerizates (P) are reacted with hydrogen in the presence of at least one hydrogenating catalyst, said catalyst being selected from salts and complex compounds of rhodium and/or ruthenium, in an aqueous dispersion of the polymerizates (P) that does not contain more than 20 volume percent of an organic solvent. The invention also relates to the hydrogenated polymerizate dispersions obtained according to the inventive method and to the polymerizates obtained from said polymerizate dispersions. In addition, the invention also relates to aqueous polymerizate dispersions containing polymers (P') which have the structure elements (I), (II) and (III) in accordance with claim 10 and have optional structure elements (IV) and/or (V) in accordance with claim 11.
La présente invention concerne un procédé d'hydrogénation sélective de liaisons doubles éthyléniquement insaturées dans des polymérisats (P), selon lequel on fait réagir les polymérisats (P) avec de l'eau, en présence d'au moins un catalyseur d'hydrogénation choisi parmi les sels et les composés complexes du rhodium et/ou du ruthenium, dans une dispersion aqueuse des polymérisats (P) qui ne contient pas plus de 20 % en volume d'un solvant organique. La présente invention concerne également les dispersions de polymérisats hydrogénés pouvant être obtenus selon ledit procédé, ainsi que les polymérisats pouvant être obtenus à partir de ces dispersions. La présente invention concerne en outre des dispersions de polymérisats aqueuses contenant des polymères (P') qui présentent des éléments structuraux (I), (II) et (III) selon la revendication 10 et, éventuellement, des éléments structuraux (IV) et/ou (V) selon la revendication 11.
Leube Hartmann F.
Maas Heiko
Schmidt-Thummes Jurgen
Zeller Edgar
Basf Aktiengesellschaft
Robic
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