Nonflammable halogen-free mixture
First Claim
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1. A nonflammable halogen-free mixture for manufacturing electrical cables with increased heat resistance, the mixture comprising:
- a copolymer selected from the group of copolymers consisting of a polypropylene block copolymer and a polypropylene random block copolymer;
a salt of a metal selected from the group consisting of Group II, IIa and IIb metals of the periodic system, wherein the metal salt in the mixture is in the range of 1 to 15 parts per 100 parts of copolymer;
a metal hydroxide, wherein the metal hydroxide in the mixture is in the range of 30 to 180 parts per 100 parts of copolymer; and
a silicone material selected from the group consisting of silicone oil, silicone rubber, and combinations thereof, wherein the silicon material in the mixture is in the range of 0.3 to 20 parts per 100 parts of copolymer.
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Abstract
A nonflammable, halogen-free mixture for making thermoplastic polymer materials with increased heat resistance, particularly for manufacturing electrical and optical cables and lines. The mixture comprises: a block or randon block copolymer of polypropylene; a salt of a metal selected from the group consisting of Group II, IIa and IIb metals; a metal hydroxide; a silicone material-selected from the group silicone oil, silicone rubber, and combinations thereof.
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12 Claims
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1. A nonflammable halogen-free mixture for manufacturing electrical cables with increased heat resistance, the mixture comprising:
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a copolymer selected from the group of copolymers consisting of a polypropylene block copolymer and a polypropylene random block copolymer;
a salt of a metal selected from the group consisting of Group II, IIa and IIb metals of the periodic system, wherein the metal salt in the mixture is in the range of 1 to 15 parts per 100 parts of copolymer;
a metal hydroxide, wherein the metal hydroxide in the mixture is in the range of 30 to 180 parts per 100 parts of copolymer; and
a silicone material selected from the group consisting of silicone oil, silicone rubber, and combinations thereof, wherein the silicon material in the mixture is in the range of 0.3 to 20 parts per 100 parts of copolymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification