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US 12,735,558 B2Granted
Resin composition, power cable, and method of producing power cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsFumitoshi Iyoda, Takanori Yamazaki
Life of this patent
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Abstract
A resin composition includes a base resin containing polyolefin, a styrene-based elastomer containing styrene units, and a copolymer containing styrene units and maleic anhydride units, wherein a content of the copolymer is 0.5 parts by mass or more with respect to the total content of the base resin and the styrene-based elastomer being 100 parts by mass, a content of the styrene-based elastomer is equal to or more than the content of the copolymer, and the copolymer does not contain side chains that are eliminated by pyrolysis or hydrolysis at 300° C. or less.
Claims16
A resin composition comprising:
- a base resin containing polyolefin;
- a styrene-based elastomer containing styrene units;
- and
- a copolymer containing styrene units and maleic anhydride units,
- wherein a content of the copolymer is 0.5 parts by mass or more with respect to a total content of the base resin and the styrene-based elastomer being 100 parts by mass,
- a content of the styrene-based elastomer is equal to or more than the content of the copolymer, and
- the copolymer does not contain a side chain that is eliminated by pyrolysis or hydrolysis at 300° C. or less.
4 more elements
A power cable comprising:
- a conductor;
- and
- an insulating layer provided to cover a circumference of the conductor;
- wherein the insulating layer includes a resin composition having a base resin containing polyolefin, a styrene-based elastomer containing styrene units, and a copolymer containing styrene units and maleic anhydride units,
- a content of the copolymer in the insulating layer is 0.5 parts by mass or more with respect to a total content of the base resin and the styrene-based elastomer being 100 parts by mass,
- a content of the styrene-based elastomer in the insulating layer is equal to or more than the content of the copolymer, and
- the copolymer does not contain a side chain that is eliminated by pyrolysis or hydrolysis at 300° C. or less.
4 more elements
A power cable comprising:
- a conductor;
- and
- an insulating layer provided to cover a circumference of the conductor;
- wherein the insulating layer includes a resin composition having a base resin containing polyolefin, a styrene-based elastomer containing styrene units, and a copolymer containing styrene units and maleic anhydride units,
- a total content of the maleic anhydride units in the insulating layer is 0.1 parts by mass or more with respect to a total content of the base resin and the styrene-based elastomer being 100 parts by mass,
- a content of the styrene-based elastomer in the insulating layer is equal to or more than the content of the copolymer, and
- the copolymer does not contain a side chain that is eliminated by pyrolysis or hydrolysis at 300° C. or less.
4 more elements
A method of producing a power cable, comprising:
- preparing a resin composition having a base resin containing polyolefin, a styrene-based elastomer containing styrene units, and a copolymer containing styrene units and maleic anhydride units;
- and
- forming an insulating layer with the resin composition to cover an outer circumference of a conductor,
- wherein, in the preparation of the resin composition,
- a content of the copolymer in the resin composition is set to 0.5 parts by mass or more with respect to a total content of the base resin and the styrene-based elastomer being 100 parts by mass,
- a content of the styrene-based elastomer in the resin composition is set to be equal to or more than the content of the copolymer, and
- the copolymer is a material without containing a side chain that is eliminated by pyrolysis or hydrolysis at 300° C. or less.
4 more elements
A method of producing a power cable, comprising:
- preparing a resin composition having a base resin containing polyolefin, a styrene-based elastomer containing styrene units, and a copolymer containing styrene units and maleic anhydride units;
- and
- forming an insulating layer with the resin composition to cover an outer circumference of a conductor,
- wherein, in the preparation of the resin composition,
- a total content of the maleic anhydride units in the resin composition is set to 0.1 parts by mass or more with respect to a total content of the base resin and the styrene-based elastomer being 100 parts by mass,
- a content of the styrene-based elastomer in the resin composition is set to be equal to or more than the content of the copolymer, and
- the copolymer is a material without containing a side chain that is eliminated by pyrolysis or hydrolysis at 300° C. or less.
4 more elements
Dependencies are inferred from the claim text.