Stabilized filler compositions for cable and wire
First Claim
1. In a wire or cable system comprising a wire or cable portion, an insulation composition surrounding the wire or cable portion, a filler material surrounding the insulation composition and a jacket composition surrounding the filler material wherein either the insulation composition, the jacket composition, or both comprise at least one antioxidant, the improvement that comprises the inclusion in the filler material of from about 0.2 to about 1% by weight of a stabilizing mixture comprising at least two antioxidants, each of the two antioxidants being selected from different members of the three-membered group consisting of:
- (a) metal dithiocarbamate salts,(b) amine antioxidants selected from the group consisting of(1) hydrocarbon-substituted diarylamines of the general formula
space="preserve" listing-type="equation">Ar--NH--Ar'"'"'where Ar and Ar'"'"' are independently selected aryl radicals,(2) reaction products of a diarylamine and an aliphatic ketone,(3) N,N'"'"' hydrocarbon substituted p-phenylenediamine, and(4) 1,2-dihydroquinoline compound, and(c) sterically hindered phenolic antioxidants, wherein the stabilizing mixture is present in the filler material in an amount that is effective for the reduction of the oxidation of the cable filling material and for producing an oxidative induction time, as measured by ASTM D 3895-94 at 190°
C., in excess of 100 minutes, whereby deterioration of the jacket and/or insulation is reduced.
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Accused Products
Abstract
The present invention is directed to an improvement in a wire or cable system comprising a wire or cable portion, an insulation composition surrounding the wire or cable portion, a filler material surrounding the insulation composition and a jacket composition surrounding the filler material wherein either the insulation composition, the jacket composition, or both comprise at least one antioxidant, wherein the improvement comprises the inclusion in the filler material of a stabilizing mixture comprising at least two antioxidants, selected from at least two members of the group consisting of:
(a) metal dithiocarbamate salts,
(b) amine antioxidants, and
(c) sterically hindered phenolic antioxidants,
wherein the stabilizing mixture is present in the filler material in an amount that is effective for the reduction of the oxidation of the cable filling material, thereby reducing deterioration of the jacket and/or insulation.
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Citations
36 Claims
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1. In a wire or cable system comprising a wire or cable portion, an insulation composition surrounding the wire or cable portion, a filler material surrounding the insulation composition and a jacket composition surrounding the filler material wherein either the insulation composition, the jacket composition, or both comprise at least one antioxidant, the improvement that comprises the inclusion in the filler material of from about 0.2 to about 1% by weight of a stabilizing mixture comprising at least two antioxidants, each of the two antioxidants being selected from different members of the three-membered group consisting of:
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(a) metal dithiocarbamate salts, (b) amine antioxidants selected from the group consisting of (1) hydrocarbon-substituted diarylamines of the general formula
space="preserve" listing-type="equation">Ar--NH--Ar'"'"'where Ar and Ar'"'"' are independently selected aryl radicals, (2) reaction products of a diarylamine and an aliphatic ketone, (3) N,N'"'"' hydrocarbon substituted p-phenylenediamine, and (4) 1,2-dihydroquinoline compound, and (c) sterically hindered phenolic antioxidants, wherein the stabilizing mixture is present in the filler material in an amount that is effective for the reduction of the oxidation of the cable filling material and for producing an oxidative induction time, as measured by ASTM D 3895-94 at 190°
C., in excess of 100 minutes, whereby deterioration of the jacket and/or insulation is reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 35, 36)
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12. The wire or cable system of claim 11 wherein at least one of the aryl radicals is substituted with at least one alkyl radical.
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13. The wire or cable system of claim 11 wherein hydrocarbon-substituted diarylamine is represented by the general formula:
- ##STR15## wherein R1 is a radical selected from the group consisting of phenyl and p-tolyl;
R2 and R3 are radicals independently selected from the group consisting of methyl, phenyl, and p-tolyl; R4 is a radical selected from the group consisting of methyl, phenyl, p-tolyl, and neopentyl; R5 is a radical selected from the group consisting of methyl, phenyl, p-tolyl, and 2-phenylisobutyl; and
,R6 is a methyl radical.
- ##STR15## wherein R1 is a radical selected from the group consisting of phenyl and p-tolyl;
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14. The wire or cable system of claim 11 wherein hydrocarbon-substituted diarylamine is represented by the general formula:
- ##STR16## wherein R1 is a radical selected from the group consisting of phenyl and p-tolyl;
R2 and R3 are radicals independently selected from the group consisting of methyl, phenyl, and p-tolyl; R4 is a radical selected from the group consisting of methyl, phenyl, p-tolyl, and neopentyl; R5 is a radical selected from the group consisting of methyl, phenyl, p-tolyl, and 2-phenylisobutyl; R7 is a radical selected from the group consisting of methyl, phenyl, and p-tolyl; X is a radical selected from the group consisting of methyl, ethyl, C3 -C10 sec-alkyl, α
,α
-dimethylbenzyl, α
-methylbenzyl, chlorine, bromine, carboxyl, and metal salts of the carboxylic acids where the metal is selected from the group consisting of zinc, cadmium, nickel, lead, tin, magnesium, and copper; and
,Y is a radical selected from the group consisting of hydrogen, methyl, ethyl, C3 -C10 sec-alkyl, chlorine, and bromine.
- ##STR16## wherein R1 is a radical selected from the group consisting of phenyl and p-tolyl;
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15. The wire or cable system of claim 11 wherein hydrocarbon-substituted diarylamine is represented by the general formula:
- ##STR17## wherein R1 is a radical selected from the group consisting of phenyl or p-tolyl;
R2 and R3 are radicals independently selected from the group consisting of methyl, phenyl, and p-tolyl; R4 is a radical selected from the group consisting of hydrogen, C3 -C10 primary, secondary, and tertiary alkyl, and C3 -C10 alkoxyl, which may be straight chain or branched; and X and Y are radicals selected from the group consisting hydrogen, methyl, ethyl, C3 -C10 sec-alkyl, chlorine, and bromine.
- ##STR17## wherein R1 is a radical selected from the group consisting of phenyl or p-tolyl;
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16. The wire or cable system of claim 11 wherein hydrocarbon-substituted diarylamine is represented by the general formula:
- ##STR18## wherein R9 is a radical selected from the group consisting of methyl, phenyl, and p-tolyl;
R10 is a radical selected from the group consisting of methyl, phenyl, p-tolyl and 2-phenyl isobutyl; and R11 is a radical selected from the group consisting methyl, phenyl, and p-tolyl.
- ##STR18## wherein R9 is a radical selected from the group consisting of methyl, phenyl, and p-tolyl;
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17. The wire or cable system of claim 11 wherein hydrocarbon-substituted diarylamine is represented by the general formula:
- ##STR19## wherein R12 is a radical selected from the group consisting of methyl, phenyl, and p-tolyl;
R13 is a radical selected from the group consisting of methyl, phenyl, and p-tolyl; R14 is a radical selected from the group consisting of methyl, phenyl, p-tolyl, and 2-phenylisobutyl; and R15 is a radical selected from the group consisting of hydrogen, α
,α
-dimethylbenzyl, α
-methylbenzhydryl, triphenylmethyl, and α
,α
-p-trimethylbenzyl.
- ##STR19## wherein R12 is a radical selected from the group consisting of methyl, phenyl, and p-tolyl;
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18. The wire or cable system of claim 1 wherein the amine antioxidant is a reaction product of a diarylamine and an aliphatic ketone.
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19. The wire or cable system of claim 18 wherein the diarylamine is selected from the group consisting of substituted or unsubstituted diphenylamine;
- substituted or unsubstituted dinaphthylamine;
p-nitrodiphenylamine;
2,4-dinitrodiphenylamine;
p-aminodiphenylamine; and
p-hydroxydiphenylamine.
- substituted or unsubstituted dinaphthylamine;
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20. The wire or cable system of claim 19 wherein the diarylamine is substituted or unsubstituted diphenylamine.
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21. The wire or cable system of claim 18 wherein the aliphatic ketone is selected from the group consisting of acetone, methylethylketone, diethylketone, monochloroacetone, and dichloroacetone.
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22. The wire or cable system of claim 21 wherein the aliphatic ketone is acetone.
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23. The wire or cable system of claim 22 wherein the diarylamine is diphenylamine.
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24. The wire or cable system of claim 1 wherein the amine antioxidant is an N,N'"'"' hydrocarbon substituted p-phenylenediamine.
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25. The wire or cable system of claim 24 wherein the hydrocarbon substituents are substituted or unsubstituted alkyl or aryl groups.
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26. The wire or cable system of claim 24 wherein the N,N'"'"' hydrocarbon substituted p-phenylenediamine is selected from the group consisting of:
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N-phenyl-N'"'"'-cyclohexyl-p-phenylenediamine; N-phenyl-N'"'"'-sec.-butyl-p-phenylenediamine; N-phenyl-N'"'"'-isopropyl-p-phenylenediamine; N-phenyl-N'"'"'-(1,3-dimethylbutyl)-p-phenylenediamine; N,N'"'"'-bis-(1,4-dimethylpentyl)-p-phenylenediamine; N,N'"'"'-diphenyl-p-phenylenediamine; N,N'"'"'-di-beta naphthyl-p-phenylenediamine; mixed diaryl-p-N,N'"'"'-bis-(1-ethyl-3-methylpentyl)-p-phenylenediamines; and N,N'"'"'-bis-(1 methylheptyl)-p-phenylenediamine.
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27. The wire or cable system of claim 1 wherein the amine antioxidant comprises 1,2-dihydroquinoline compound.
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28. The wire or cable system of claim 27 wherein the 1,2-dihydroquinoline compound is selected from the group consisting of polymerized 1,2-dihydro-2,2,4-trimethylquinoline;
- 2,2,4-trimethyl-1,2-dihydroquinoline;
6-dodecyl-2,2,4-trimethyl-1,2-dihydroquinoline; and
6-ethoxy-2,2,4-trimethyl-1-2-dihydroquinoline.
- 2,2,4-trimethyl-1,2-dihydroquinoline;
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29. The wire or cable system of claim 1 wherein the amine antioxidant is polymerized 1,2-dihydro-2,2,4-trimethyl quinoline.
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30. The wire or cable system of claim 1 wherein the hindered phenolic antioxidant has a molecular weight above 500 daltons.
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31. The wire or cable system of claim 30 wherein the hindered phenolic antioxidant is selected from the group consisting of:
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2,4-dimethyl-6-octyl-phenol; 2,6-di-t-butyl-4-methyl phenol; 2,6-di-t-butyl-4-ethyl phenol; 2,6-di-t-butyl-4-n-butyl phenol; 2,2'"'"'-methylenebis(4-methyl-6-t-butyl phenol); 2,2'"'"'-methylenebis(4-ethyl-6-t-butyl-phenol); 2,4-dimethyl-6-t-butyl phenol; 4-hydroxymethyl-2,6-di-t-butyl phenol; n-octadecyl-beta(3,5-di-t-butyl-4-hydroxyphenyl)propionate;
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33. The wire or cable system of claim 1 wherein the hindered phenolic antioxidant has a molecular weight above 700 daltons.
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35. The wire or cable system of claim 33 wherein the polyphenol comprising three or more substituted phenol groups is selected from the group consisting of tetrakis{methylene(3,5-di-t-butyl-4-hydroxy-hydrocinnamate)}methane and 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene.
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36. The wire or cable system of claim 1 wherein the phenolic antioxidant is tetrakis[methylene(3,5-di-tert-butyl-4-hydroxy-hydrocinnamate)]methane.
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32. 6-dioctadecyl-4-methyl phenol;
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2,4,6-trimethyl phenol; 2,4,6-triisopropyl phenol; 2,4,6-tri-t-butyl phenol; 2-t-butyl-4,6-dimethyl phenol; 2,6-methyl-4-didodecyl phenol; tris(3,5-di-t-butyl-4-hydroxy)isocyanurate; tris(2-methyl-4-hydroxy-5-t-butylphenyl)butane; octadecyl-3,5-di-t-butyl-4-hydroxy hydrocinnamate; tetrakis{methylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)}methane; 1,2-bis(3,5-di-t-butyl-4-hydroxyhydrocinnamoyl)hydrazine; 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)-s-triazine-2,4,6 (1H,3H,5H)trione; 2,2'"'"'-oxamido bis-{ethyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)}propionate; 1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-s-triazine-2,4,6-(1H,3H,5H)trione; 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene; 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris(2-hydroxyethyl)-5-triazine-2,4,6(1H,3H,5H)-trione; and bis(3,3-bis(4-hydroxy-3-t-butylphenyl)butanoic acid)glycolester. - View Dependent Claims (34)
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Specification