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AssigneeJsr Corporation
InventorsKentarou Kanae, Akihiko Morikawa, Hideo Nakanishi, Shoei Tsuji
Estimating the term…
Disclosed herein are an olefin thermoplastic elastomer having the same or similar rubber elasticity, flexibility and molding and processability as those of the conventional olefin thermoplastic elastomers, and are good in mechanical properties and wear resistance and excellent in scratch resistance in particular and a production process thereof, a composition containing the olefin thermoplastic elastomer and a production process thereof, and molded products thereof. The olefin thermoplastic elastomer according to the present invention comprises an olefin random copolymer formed by copolymerizing ethylene, an α-olefin having 3 to 10 carbon atoms and an unsaturated monomer having a functional group, and optionally a non-conjugated diene, and metal ions crosslinking the olefin random copolymer.
An olefin thermoplastic elastomer comprising an olefin random copolymer formed by copolymerizing ethylene, an α-olefin having 3 to 10 carbon atoms and an unsaturated monomer having a functional group, and optionally a non-conjugated diene, and metal ions crosslinking the olefin random copolymer.
A process for producing an olefin thermoplastic elastomer, which comprises the step of mixing a solution with 100 parts by weight of an olefin random copolymer formed by copolymerizing 35 to 94.99 mol % of ethylene, 5 to 50 mol % of an α-olefin having 3 to 10 carbon atoms, 0.01 to 5 mol % of a functional cyclic compound represented by the general formula (1) set forth in claim 3 and 0 to 10 mol % of a non-conjugated diene dissolved in a solvent with a liquid with 0.1 to 20 parts by weight of a metal compound dissolved or dispersed in a solvent, at a temperature of at least 20° C. and the step of removing the solvent(s), from the resultant liquid mixture.
A process for producing an olefin thermoplastic elastomer, which comprises the step of subjecting 100 parts by weight of an olefin random copolymer formed by copolymerizing 35 to 94.99 mol % of ethylene, 5 to 50 mol % of an α-olefin having 3 to 10 carbon atoms, 0.01 to 5 mol % of a functional cyclic compound represented by the general formula (1) set forth in claim 3 and 0 to 10 mol % of a non-conjugated diene and 0.1 to 20 parts by weight of a metal compound to a dynamic heat treatment under conditions of a temperature of 120 to 350° C. and a shear rate of 10 to 2,000 s−1.
A process for producing an olefin thermoplastic elastomer composition, which comprises the step of subjecting 100 parts by weight of an olefin random copolymer formed by copolymerizing 35 to 94.99 mol % of ethylene, 5 to 50 mol % of an α-olefin having 3 to 10 carbon atoms, 0.01 to 5 mol % of a functional cyclic compound represented by the general formula (1) set forth in claim 3 and 0 to 10 mol % of a non-conjugated diene, 0.1 to 20 parts by weight of a metal compound, and at most 300 parts by weight of a polymeric compound selected from a thermoplastic resin and rubber and/or at most 100 parts by weight of a softening agent to a dynamic heat treatment under conditions of a temperature of 120 to 350° C. and a shear rate of 10 to 2,000 s−1.
Dependencies are inferred from the claim text.