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AssigneeSociete Nationale des Petroles d'Aquitaine
InventorGilbert Marie
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A process is described for the preparation of substantially linear, amorphous random copolymers of mono-olefins or mono-olefins and unconjugated dienes with unsaturated nitrogen derivatives selected from N-vinylimidazoles and N-vinylimidazolines and compounds derived from them by substitution, for the hydrogen atoms fixed to the carbons in the heterocycle, of hydrocarbon or aminohydrocarbon radicals. At least two mono-olefins containing 2 to 20 carbon atoms, and possibly an unconjugated diene, are placed in contact, in an inert liquid medium at a temperature of between -80.degree. and +150.degree.C, with at least one of these nitrogen derivatives in the form of a complex with a Lewis acid, in the presence of a co-ordination catalyst system. The resulting copolymers can be vulcanized, and among other properties have excellent adherence to metal surfaces.
A process for the preparation of substantially linear, amorphous, random copolymers of mono-olefins, or mono-olefins and unconjugated dienes, with a member selected from the group consisting of N-vinylimidazole, N-vinylimidazoline, ring substituted N-vinyl-imidazoles and ring substituted N-vinylimidazolines wherein the substituents are hydrocarbon radicals and amino-hydrocarbon radicals, comprising contacting at least two mono-olefins containing from 2 to 20 carbon atoms in their molecule or at least two such mono-olefins and said unconjugated diene in a liquid medium at a temperature of between -80.degree. to 150.degree.C with at least one of the said members in the form of a complex with a Lewis acid, in the presence of the catalyst system formed by the combination of an organometallic compound of at least one metal in column I, II or III of the periodic table of elements with a compound of a transition metal in columns IV to VIII of said periodic table at a ratio of the number of atoms of the first metal to the number of atoms of the second metal of between 1 and 50, to obtain the desired copolymer.
A substantially linear, amorphous random copolymer, characterized by the fact that it contains 99.9 to 80% weight of non-polar groups from at least 2 mono-olefins containing 2 to 20 carbon atoms in their molecule or at least 2 such mono-olefins and an unconjugated diene, and 0.1 to 20 percent polar groups from at least 1 member selected from the group consisting of N-vinylimidazole, N-vinylimidazoline, ring substituted N-vinylimidazoles and ring substituted N-vinylimidazolines wherein the substituents are hydrocarbon radicals and amino-hydrocarbon radicals.
Dependencies are inferred from the claim text.