Olefin copolymers containing cyclopropane rings in the main chain
AssigneeUniversita' Degli Studi de Salerno
InventorsPasquale Longo, Stefania Pragliola, Gaetano Guerra
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Abstract
The invention relates to copolymers of alkenes and conjugated dienes containing cyclopropane and cyclopentane rings in the main chain. These copolymers are charachterised in that the amount of cyclopropane units is between 0.1% and 50% by weight and that the molar percent of the cyclopropane units is higher than the molar percent of the unsubstituted cyclopentane units.
Claims24
Olefin copolymers of an alkene having 2 to 12 carbon atoms and a conjugated diene having 4 to 8 carbon atoms, including in the main chain cyclopropane units and cyclopentane units, which cyclopentane units can be substituted or unsubstituted;
- wherein the amount of cyclopropane units is between 0.1% and 50% by weight and the molar percent of cyclopropane units is greater than the molar percent of unsubstituted cyclopentane units present in the copolymers.
Process for the production of olefin copolymers of alkene having 2 to 12 carbon atoms and of a conjugated diene having 4 to 8 carbon atoms, which comprise in the main chain cyclopropane units and substituted or unsubstituted cyclopentane units and in which the amount of cyclopropane units is between 0.1% and 50% by weight and the molar percent of cyclopropane units is higher than the molar percent of the unsubstituted cyclopentane units, characterized in that the polymerisation reaction of the alkene and conjugated diene mixture is conducted in the presence of insertion polymerisation catalytic systems.
Dependencies are inferred from the claim text.