Polar-group-containing olefin copolymer, polar-group-containing multinary olefin copolymer, olefin-based resin composition, and adhesive and layered product each using the same
AssigneesJapan Polyethylene Corporation, Japan Polypropylene Corporation
InventorsMasahiro Uematsu, Kazunari Abe, Hiroyuki Shimizu, Tetsuya Morioka
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Abstract
A method of producing a polar-group-containing olefin copolymer which comprises 99.999 to 80 mol % of structural units derived from at least one of ethylene and α-olefin having 3 to 20 carbon atoms and 20 to 0.001 mol % of structural units derived from at least one polar-group-containing monomer which contains an epoxy group and is represented by structural formula (I) or (II), the method comprising random copolymerization in the presence of a transition metal catalyst to obtain a copolymer having a linear molecular structure.
Claims19
A method of producing a polar-group-containing olefin copolymer which comprises 99.999 to 80 mol % of structural units derived from at least one of ethylene or α-olefin having 3 to 20 carbon atoms and 20 to 0.001 mol % of structural units derived from at least one polar-group-containing monomer which contains an epoxy group and is represented by the following structural formula (I), the method comprising copolymerizing at least one of ethylene or α-olefin having 3 to 20 carbon atoms and at least one polar-group-containing monomer which contains an epoxy group and is represented by structural formula (I) in the presence of a transition metal catalyst comprising a chelatable ligand and a Group-5 to Group-11 metal to produce a random copolymer having a linear molecular structure,
- wherein structural formula (I) is:
- in which R1 represents a hydrogen atom and R2, R3, and R4 each independently represents a hydrogen atom, a hydrocarbon group, or an epoxy-group-containing functional group, wherein at least one of R2 to R4 comprises the epoxy-group-containing functional group,
- wherein the polar-group-containing olefin copolymer has a melting point of 50 to 140° C., the melting point is determined by a differential scanning calorimeter by heating the copolymer to 200° C. at 10° C./minute, maintaining a temperature of 200° C. for 5 minutes, cooling the copolymer to 30° C. at 10° C./minute, maintaining a temperature at 30° C. for 5 minutes, and then heating the copolymer at 10° C./minute to obtain an endothermic curve for this heating, a maximum-peak temperature in the endothermic curve is the melting point;
- and
- wherein an amount of aluminum (Al) in the polar-group-containing olefin copolymer, as measured by X-ray fluorescence analysis, is 0 to 171 μg per g of the copolymer.
A method of producing an olefin-based resin composition comprising a polar-group-containing olefin copolymer (A′) and an olefin-based resin (C), the method comprising producing a polar-group-containing olefin copolymer which comprises 99.999 to 80 mol % of structural units derived from at least one of ethylene or α-olefin having 3 to 20 carbon atoms and 20 to 0.001 mol % of structural units derived from at least one polar-group-containing monomer which contains an epoxy group and is represented by the following structural formula (I), by copolymerizing at least one of ethylene or α-olefin having 3 to 20 carbon atoms and at least one polar-group-containing monomer which contains an epoxy group and is represented by structural formula (I) in the presence of a transition metal catalyst comprising a chelatable ligand and a Group-5 to Group-11 metal to produce a random copolymer having a linear molecular structure,
- wherein structural formula (I) is:
- in which R1 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and R2, R3, and R4 each independently represents a hydrogen atom, a hydrocarbon group, or an epoxy-group-containing functional group, wherein at least one of R2 to R4 comprises the epoxy-group-containing functional group,
- wherein the polar-group-containing olefin copolymer has a melting point of 50 to 140° C., the melting point is determined by a differential scanning calorimeter by heating the copolymer to 200° C. at 10° C./minute, maintaining a temperature of 200° C. for 5 minutes, cooling the copolymer to 30° C. at 10° C./minute, maintaining a temperature at 30° C. for 5 minutes, and then heating the copolymer at 10° C./minute to obtain an endothermic curve for this heating, a maximum-peak temperature in the endothermic curve is the melting point;
- and
- wherein an amount of aluminum (Al) in the polar-group-containing olefin copolymer is 0 to 10,000 μg per g of the copolymer;
- and combining the polar-group-containing olefin copolymer (A′) and an olefin-based resin (C).
Dependencies are inferred from the claim text.