Low smoke, fire and water resistant cable coating
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D02G-003/00
H01B-003/10
출원번호
US-0052888
(2008-03-21)
등록번호
US-8703288
(2014-04-22)
발명자
/ 주소
Clancy, Tim
출원인 / 주소
General Cable Technologies Corporation
대리인 / 주소
Blank Rome LLP
인용정보
피인용 횟수 :
3인용 특허 :
30
초록▼
Cable coatings having effective low-smoke emission, fire resistance and moisture resistance provided by a single layer are described. The cable coatings contain an base polymer, a oxygen containing ethylene copolymer, a fire retardant and a synergistic blend of magnesium hydroxide and aluminum hydro
Cable coatings having effective low-smoke emission, fire resistance and moisture resistance provided by a single layer are described. The cable coatings contain an base polymer, a oxygen containing ethylene copolymer, a fire retardant and a synergistic blend of magnesium hydroxide and aluminum hydroxide. Cables coated with the described coatings have improved wet electrical performance, and satisfactory fire performance and smoke characteristics.
대표청구항▼
1. A low smoke, fire-resistant and moisture resistant cable coating comprising: (a) an ethylene octene copolymer;(b) at least 5% by weight of an ethylene vinyl acetate copolymer or an ethylene butyl acrylate compolymer;(c) a fire retardant selected from the group consisting of antimony trioxide, ant
1. A low smoke, fire-resistant and moisture resistant cable coating comprising: (a) an ethylene octene copolymer;(b) at least 5% by weight of an ethylene vinyl acetate copolymer or an ethylene butyl acrylate compolymer;(c) a fire retardant selected from the group consisting of antimony trioxide, antimony pentoxide, antimony tetraoxide, hexaantimony tridecaoxide, crystalline antimonic acid, lithium antimonate, barium antimonate, zinc borate, basic zinc molybdate, zinc calcium molybdate, zirconium oxide, zinc stannate, zinc oxide, iron oxide, red phosphorus, hydrated structured silicates, synthetic anionic hydrotalcite, and carbon black; and(d) at least 60 percent by weight of a blend of magnesium hydroxide and aluminum monohydrate. 2. The cable coating of claim 1 wherein the magnesium hydroxide and the aluminum monohydrate are treated with oligomeric silane. 3. The cable coating of claim 1, wherein the fire retardant is zinc stannate. 4. The cable coating of claim 1, wherein the ratio of magnesium hydroxide to aluminum monohydrate is 9 to 1. 5. A low smoke, fire-resistant and moisture resistant cable comprising a conductor and a coating, said coating comprising: (a) an ethylene octene copolymer;(b) at least 5% by weight of an ethylene vinyl acetate copolymer or an ethylene butyl acrylate compolymer;(c) a fire retardant selected from the group consisting of antimony trioxide, antimony pentoxide, antimony tetraoxide, hexaantimony tridecaoxide, crystalline antimonic acid, lithium antimonate, barium antimonate, zinc borate, basic zinc molybdate, zinc calcium molybdate, zirconium oxide, zinc stannate, zinc oxide, iron oxide, red phosphorus, hydrated structured silicates, synthetic anionic hydrotalcite, and carbon black; and(d) at least 60 percent by weight of a blend of magnesium hydroxide and aluminum monohydrate. 6. The cable of claim 5 wherein the magnesium hydroxide and the aluminum monohydrate are treated with oligomeric silane. 7. The cable of claim 5, wherein the fire retardant is zinc stannate. 8. The cable of claim 5, wherein the ratio of magnesium hydroxide to aluminum monohydrate is 9 to 1. 9. A method of making a low smoke, fire-resistant and moisture resistant cable comprising coating a conductor with a coating, said method comprising: (a) coating an electrical conductor with a coating, said coating comprising an ethylene octene copolymer; at least 5% by weight of an ethylene vinyl acetate copolymer or an ethylene butyl acrylate compolymer; a fire retardant selected from the group consisting of antimony trioxide, antimony pentoxide, antimony tetraoxide, hexaantimony tridecaoxide, crystalline antimonic acid, lithium antimonate, barium antimonate, zinc borate, basic zinc molybdate, zinc calcium molybdate, zirconium oxide, zinc stannate, zinc oxide, iron oxide, red phosphorus, hydrated structured silicates, synthetic anionic hydrotalcite, and carbon black; and at least 60 percent by weight of a blend of magnesium hydroxide and aluminum monohydrate; and(b) vulcanizing the coating. 10. The method of claim 9 wherein the magnesium hydroxide and the aluminum monohydrate are treated with oligomeric silane. 11. The method of claim 9, wherein the fire retardant is zinc stannate. 12. The method of claim 9, wherein the ratio of magnesium hydroxide to aluminum monohydrate is 9 to 1.
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