US5246783A
Expired / Lapsed
US
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Electrical devices comprising polymeric insulating or semiconducting members
Assignee: ExxonMobil Chemical Patents Inc
•
Filing: 1991-08-15
•
Granted: 1993-09-21
•
Expires: 2011-08-15
Abstract
Abstract Disclosed are electrically conductive and semiconductive devices utilizing polymers having resistance to water treeing and good dielectric properties. The polymer comprises ethylene polymerized with at least one C 3 to C 20 alpha-olefin and optionally at least one C 3 to C 20 polyene. The polymer utilized has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent. For the polymer utilized, the tree rating is generally less than about 40, the power factor is in the range of about 0.0002 to about 0.0005, and the dielectric constant is in the range of about 1.8 to about 2.4.
Inventors
- 👤 Lawrence Spenadel
- 👤 Monica L. Hendewerk
- 👤 Aspy K. Mehta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:40
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/2813; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08L; C08L2203/00; C08L2203/20; C08L2203/202; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L23/083; C08L2312/00; C08L2314/00; C08L2314/06; Y; Y10; Y10S; Y10S174/00; Y10S174/13; Y10S174/26; Y10S174/27; Y10S174/28; Y10S174/31; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S526/00; Y10S526/943; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
141 words
An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) an electrically conductive member comprising at least one electrically conductive substrate; and (b) at least one electrically insulating member substantially surrounding the electrically conductive member, wherein the insulating member comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and wherein the polymer has a density in the range Of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent.
Claim 2
Dependent Claim
141 words
An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) an electrically conductive member comprising at least one electrically conductive substrate; and (b) at least one electrically insulating member substantially surrounding the electrically conductive member, wherein the insulating member comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and wherein the polymer has a density in the range Of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent.
Claim 3
Dependent Claim
76 words
The device of claim 1 wherein the polymer has at least one of the following properties selected from the group consisting of a density in the range of about 0.865 g/cm 3 to about 0.93 g/cm 3 , a melt index in the range of about 1 dg/min to about 50 dg/min, a molecular weight distribution in the range of about 1.7 to about 10, and a composition distribution breadth index greater than about 50 percent.
Claim 4
Dependent Claim
15 words
The device of claim 1 wherein the polymer is polymerized utilizing a metallocene catalyst system.
Claim 5
Dependent Claim
29 words
The device of claim 1 wherein the polymer comprises in the range of about 68 mole percent to about 99 mole percent ethylene based on the moles of monomer.
Claim 6
Dependent Claim
35 words
The device of claim 1 wherein the polymer is selected from the group consisting of ethylene/C 3 to C 20 alpha-olefin copolymers and ethylene/C 3 to C 20 alpha-olefin/C 3 to C 20 diene terpolymers.
Claim 7
Dependent Claim
27 words
The device of claim 5 wherein the polymer selected from the group consisting of copolymers of ethylene/butene-1, ethylene/hexene-1, ethylene/octene-1, and ethylene/propylene and terpolymers of ethylene/propylene/1,4-hexadiene and ethylene/butene-1/1,4-hexadiene.
Claim 8
Dependent Claim
73 words
The device of claim 1 wherein the polymer has at least one property selected from the group consisting of a density in the range of about 0.87 g/cm 3 to about 0.91 g/cm 3 , a melt index in the range of about 3 dg/min to about 30 dg/min, a molecular weight distribution in the range of about 1.8 to about 3.5, and a composition distribution breadth index greater than about 60 percent.
Claim 9
Dependent Claim
29 words
The device of claim 7 wherein the polymer comprises in the range of about 73 mole percent to about 98 mole percent ethylene based on the moles of monomer.
Claim 10
Dependent Claim
23 words
The device of claim 7 wherein the polymer is crosslinked with at least one of the group consisting of crosslinking agents and radiation.
Claim 11
Dependent Claim
15 words
The device of claim 7 wherein the polymer is crosslinked with at least dicumyl peroxide.
Claim 12
Dependent Claim
15 words
The device of claim 7 wherein the polymer is polymerized utilizing a metallocene catalyst system.
Claim 13
Dependent Claim
16 words
The device of claim 7 wherein the insulating member comprises up to 50 weight percent filler.
Claim 14
Dependent Claim
41 words
The device of claim 8 wherein the polymer has a tree rating less than about 25, a power factor in the range of about 0.0002 to about 0.0005, and a dielectric constant in the range of about 1.8 to about 2.4.
Claim 15
Dependent Claim
23 words
The device of claim 13 wherein the conductive member comprises at least one selected from the group consisting of aluminum, copper and steel.
Claim 16
Dependent Claim
153 words
An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) an electrically conductive member comprising at least one electrically conductive substrate; and (b) at least one semiconductive member substantially surrounding the electrically conductive member, wherein the semiconducting member comprises a polymer selected from the group consisting of ethylene polmerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and wherein the polymer has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent, and the semiconducting member further comprises a conducting filler to render it semiconducting.
Claim 17
Dependent Claim
153 words
An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) an electrically conductive member comprising at least one electrically conductive substrate; and (b) at least one semiconductive member substantially surrounding the electrically conductive member, wherein the semiconducting member comprises a polymer selected from the group consisting of ethylene polmerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and wherein the polymer has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent, and the semiconducting member further comprises a conducting filler to render it semiconducting.
Claim 18
Dependent Claim
15 words
The device of claim 15 wherein the polymer is crosslinked with at least dicumyl peroxide.
Claim 19
Dependent Claim
35 words
The device of claim 15 wherein the polymer is selected from the group consisting of ethylene/C 3 to C 20 alpha-olefin copolymers and ethylene/C 3 to C 20 alpha-olefin/C 3 to C 20 diene terpolymers.
Claim 20
Dependent Claim
28 words
The device of claim 17 wherein the polymer is selected from the group consisting of copolymers of ethylene/butene-1, ethylene/hexene-1, ethylene/octene-1, and ethylene/propylene and terpolymers of ethylene/propylene/1,4-hexadiene and ethylene/butene-1/1,4-hexadiene.
Claim 21
Dependent Claim
29 words
The device of claim 15 wherein the polymer comprises in the range of about 75 mole percent to about 94 mole percent ethylene based on the moles of monomer.
Claim 22
Dependent Claim
73 words
The device of claim 17 wherein the polymer has at least one property selected from the group consisting of a density in the range of about 0.865 g/cm 3 to about 0.93 g/cm 3 , a melt index in the range of about 1 dg/min to about 50 dg/min, a molecular weight distribution in the range of about 1.7 to about 10, and a composition distribution breadth index greater than about 50 percent.
Claim 23
Dependent Claim
23 words
The device of claim 20 wherein the polymer is crosslinked with at least one of the group consisting of crosslinking agents and radiation.
Claim 24
Dependent Claim
63 words
The device of claim 15 wherein the polymer has a density in the range of about 0.87 g/cm 3 to about 0.91 g/cm 3 , a melt index in the range of about 3 dg/min to about 30 dg/min, a molecular weight distribution in the range of about 1.8 to about 3.5, and a composition distribution breadth index greater than about 60 percent.
Claim 25
Dependent Claim
15 words
The device of claim 22 wherein the polymer is polymerized utilizing a metallocene catalyst system.
Claim 26
Dependent Claim
18 words
The device of claim 22 wherein the semiconducting member comprises up to 50 weight percent carbon black filler.
Claim 27
Dependent Claim
41 words
The device of claim 24 wherein the polymer has a tree rating less than about 15, a power factor in the range of about 0.0002 to about 0.0005, and a dielectric constant in the range of about 1.8 to about 2.4.
Claim 28
Dependent Claim
23 words
The device of claim 25 wherein the conductive member comprises at least one selected from the group consisting of aluminum, copper and steel.
Claim 29
Dependent Claim
154 words
A semiconductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) a semiconductive member; and (b) an electrically insulating member substantially surrounding the semiconductive member; wherein at least one of the group consisting of the semiconductive member and the electrically insulating member comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and wherein the polymer has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent, and wherein the semiconducting member comprises a filler to render it semiconducting.
Claim 30
Dependent Claim
154 words
A semiconductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) a semiconductive member; and (b) an electrically insulating member substantially surrounding the semiconductive member; wherein at least one of the group consisting of the semiconductive member and the electrically insulating member comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and wherein the polymer has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent, and wherein the semiconducting member comprises a filler to render it semiconducting.
Claim 31
Dependent Claim
35 words
The device of claim 27 wherein the polymer is selected from the group consisting of ethylene/C 3 to C 20 alpha-olefin copolymers and ethylene/C 3 to C 20 alpha-olefin/C 3 to C 20 diene terpolymers.
Claim 32
Dependent Claim
23 words
The device of claim 28 wherein the polymer is crosslinked with at least one of the group consisting of crosslinking agents and radiation.
Claim 33
Dependent Claim
15 words
The device of claim 28 wherein the polymer is crosslinked with at least dicumyl peroxide.
Claim 34
Dependent Claim
75 words
The device of claim 28 wherein the polymer has at least one property selected from the group of properties consisting of a density in the range of about 0.865 g/cm 3 to about 0.93 g/cm 3 , a melt index in the range of about 1 dg/min to about 50 dg/min, a molecular weight distribution in the range of about 1.7 to about 10, and a composition distribution breadth index greater than about 50 percent.
Claim 35
Dependent Claim
28 words
The device of claim 28 wherein the polymer is selected from the group consisting of copolymers of ethylene/butene-1, ethylene/hexene-1, ethylene/octene-1, and ethylene/propylene and terpolymers of ethylene/propylene/1,4-hexadiene and ethylene/butene-1/1,4-hexadiene.
Claim 36
Dependent Claim
72 words
The device of claim 27 wherein the polymer has at least one property selected from the group consisting of density in the range of about 0.87 g/cm 3 to about 0.91 g/cm 3 , a melt index in the range of about 3 dg/min to about 30 dg/min, a molecular weight distribution in the range of about 1.8 to about 3.5, and a composition distribution breadth index greater than about 60 percent.
Claim 37
Dependent Claim
15 words
The device of claim 33 wherein the polymer is polymerized with a metallocene catalyst system.
Claim 38
Dependent Claim
28 words
The device of claim 33 wherein the polymer comprises in the range of about 73 to about 98 mole percent ethylene based on the total moles of monomer.
Claim 39
Dependent Claim
18 words
The device of claim 33 wherein the semiconducting member comprises up to 50 weight percent carbon black filler.
Claim 40
Dependent Claim
41 words
The device of claim 36 wherein the polymer has a tree rating less than about 10, a power factor in the range of about 0.0002 to about 0.0005, and a dielectric constant in the range of about 1.8 to about 2.4.
Claim 41
Dependent Claim
23 words
The device of claim 37 wherein the conductive member comprises at least one selected from the group consisting of aluminum, copper and steel.
Claim 42
Dependent Claim
143 words
An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) an electrically conductive member comprising at least one electrically conductive substrate; and (b) at least one protective layer substantially surrounding and supported by the electrically conductive member, wherein at least one layer comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and the polymer has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent.
Claim 43
Dependent Claim
143 words
An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising: (a) an electrically conductive member comprising at least one electrically conductive substrate; and (b) at least one protective layer substantially surrounding and supported by the electrically conductive member, wherein at least one layer comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C 3 to C 20 alpha-olefins and C 3 to C 20 polyenes, and the polymer has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent.
Claim 44
Dependent Claim
15 words
The device of claim 39 wherein the polymer is polymerized with a metallocene catalyst system.
Claim 45
Dependent Claim
28 words
The device of claim 39 wherein the polymer comprises in the range of about 73 to about 98 mole percent ethylene based on the total moles of monomer.
Claim 46
Dependent Claim
72 words
The device of claim 39 wherein the polymer has at least one property selected from the group consisting of density in the range of about 0.865 g/cm 3 to about 0.93 g/cm 3 , a melt index in the range of about 1 dg/min to about 50 dg/min, a molecular weight distribution in the range of about 1.7 to about 10, and a composition distribution breadth index greater than about 50 percent.
Claim 47
Dependent Claim
35 words
The device of claim 39 wherein the polymer is selected from the group consisting of ethylene/C 3 to C 20 alpha-olefin copolymers and ethylene/C 3 to C 20 alpha-olefin/C 3 to C 20 diene terpolymers.
Claim 48
Dependent Claim
28 words
The device of claim 43 wherein the polymer is selected from the group consisting of copolymers of ethylene/butene-1, ethylene/hexene-1, ethylene/octene-1, and ethylene/propylene and terpolymers of ethylene/propylene/1,4-hexadiene and ethylene/butene-1/1,4-hexadiene.
Claim 49
Dependent Claim
73 words
The device of claim 39 wherein the polymer has at least one property selected from the group consisting of a density in the range of about 0.87 g/cm 3 to about 0.91 g/cm 3 , a melt index in the range of about 3 dg/min to about 30 dg/min, a molecular weight distribution in the range of about 1.8 to about 3.5, and a composition distribution breadth index greater than about 60 percent.
Claim 50
Dependent Claim
18 words
The device of claim 45 wherein the protective layer comprises up to 50 weight percent carbon black filler.
Claim 51
Dependent Claim
41 words
The device of claim 45 wherein the polymer has a tree rating less than about 40, a power factor in the range of about 0.0002 to about 0.0005, and a dielectric constant in the range of about 1.8 to about 2.4.
Claim 52
Dependent Claim
23 words
The device of claim 47 wherein the polymer is crosslinked with at least one of the group consisting of crosslinking agents and radiation.
Claim 53
Dependent Claim
15 words
The device of claim 47 wherein the polymer is crosslinked with at least dicumyl peroxide.
Claim 54
Dependent Claim
23 words
The device of claim 47 wherein the conductive member comprises at least one selected from the group consisting of aluminum, copper and steel.
Claim 55
Dependent Claim
46 words
The device of claim 47 wherein the at least one protective layer comprises a first shield layer adjacent the conductive member, an insulation layer adjacent the first shield layer, a second shield layer adjacent the insulation layer, and a jacket layer adjacent the second shield layer.
Claim 56
Dependent Claim
28 words
The device of claim 47 wherein the at least one protective layer comprises an insulation layer adjacent the conductive member and a jacket layer adjacent the insulation layer.
References Cited (Backward Citations)
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