Patent US5430091A successfully refreshed from Google Patents.
US5430091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture crosslinkable flame retardant compositions for cable applications
Assignee: Equistar Chemicals LP
•
Filing: 1994-05-11
•
Granted: 1995-07-04
•
Expires: 2014-05-11
Abstract
Abstract A moisture crosslinkable flame retardant composition comprising 25-75 wt % of a vinyl trialkoxy silane copolymer having a melt index selected from the range 0.2-25, and a silane content selected from 0.5-5 wt %; 15-20 wt % polyethylene having a melt index selected from 0.1-30, and a density selected from 0.93-0.96 g/ml; 10-35 wt % decabromodiphenyl oxide; and, optionally, 5-15 wt % 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro 1,4,4a,5,6,6a,7,10,10a,11,12,12a-dodecahydro 1,4,7,10-dimethanodibenzo (a,e) cyclooctene. The crosslinkable composition provides improved dielectric breakdown strength and flame retardancy. Improved electric cables are provided.
Inventors
- 👤 Carl M. Mahabir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08L; C08L43/00; C08L43/04; C08L23/00; C08L23/02; C08L23/04; C08L23/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
69 words
A moisture crosslinkable flame retardant composition comprising 25-75 wt % of a vinyl trialkoxy silane random copolymer of ethylene and said silane, said copolymer having a melt flow index selected from the range 0.2-25, and a silane content selected from 0.5-5 wt %; 15-20 wt % polyethylene having a melt index selected from 0.1-30, and a density selected from 930-960 kg/m 3 ; and 10-35 wt % decabromodiphenyl oxide.
Claim 2
Dependent Claim
69 words
A moisture crosslinkable flame retardant composition comprising 25-75 wt % of a vinyl trialkoxy silane random copolymer of ethylene and said silane, said copolymer having a melt flow index selected from the range 0.2-25, and a silane content selected from 0.5-5 wt %; 15-20 wt % polyethylene having a melt index selected from 0.1-30, and a density selected from 930-960 kg/m 3 ; and 10-35 wt % decabromodiphenyl oxide.
Claim 3
Dependent Claim
75 words
A moisture crosslinkable flame retardant composition as claimed in claim 1 comprising 25-40 wt % of a vinyl trialkoxy silane copolymer having a melt flow index selected from the range 0.2-25, and a silane content selected from 0.5-5 wt %; 15-20 wt % polyethylene having a melt index selected from 0.1-30, and a density selected from 930-960 kg/m 3 ; 5-15 wt % 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro 1,4,4a,5,6,6a,7,10,10a,11,12,12a -dodecahydro 1,4,7,10-dimethanodibenzo (a,e) cyclooctene; and 25-35 wt % decabromodiphenyl oxide.
Claim 4
Dependent Claim
17 words
A composition as claimed in claim 1 wherein said silane content is selected from 1.5-2.5 wt %.
Claim 5
Dependent Claim
20 words
A composition as claimed in claim 1 wherein said silane copolymer has a melt index selected from 0.5 to 5.
Claim 6
Dependent Claim
15 words
A composition as claimed in claim 1 comprising 30-35 wt % vinyl trialkoxy silane copolymer.
Claim 7
Dependent Claim
16 words
A composition as claimed in claim 1 wherein said vinyl trialkoxy silane is vinyl trimethoxy silane.
Claim 8
Dependent Claim
16 words
A composition as claimed in claim 1 wherein said vinyl trialkoxy silane is vinyl triethoxy silane.
Claim 9
Dependent Claim
39 words
A composition as claimed in claim 1 comprising 33 wt % of vinyl trimethoxy silane random copolymer, 17 wt % high density polyethylene, about 10 wt % 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro 1,4,4a,5,6,6a,7,10,10a,11,12,12a-dodecahydro 1,4,7,10-dimethanodibenzo (a,e) cyclooctene, and about 30 wt % decabromodiphenyl oxide.
Claim 10
Dependent Claim
27 words
A composition as claimed in claim 1 comprising 55-65 wt % of vinyl trimethoxy silane random copolymer, 15-20 wt % polyethylene and 10-15 wt % decabromodiphenyl oxide.
Claim 11
Dependent Claim
30 words
A composition as claimed in claim 9 comprising about 60 wt % of vinyl trimethoxy silane random copolymer, about 18 wt % polyethylene and about 10 wt % decabromodiphenyl oxide.
Claim 12
Dependent Claim
12 words
A composition as claimed in claim 1 further comprising an antimony compound.
Claim 13
Dependent Claim
25 words
A composition as claimed in claim 1 further comprising an additive selected from the group consisting of a processing aid, condensation catalyst, antioxidant and stabilizer.
Claim 14
Dependent Claim
40 words
A method for the production of a coated electrical conductor coated with a flame retardant crosslinked polyethylene composition, said method comprising coating said conductor with a moisture crosslinkable flame retardant composition as defined in claim 1 and crosslinking said composition.
Claim 15
Dependent Claim
12 words
A coated electrical conductor made by the process defined in claim 13.
References Cited (Backward Citations)
US3832326A
Cited
US3950456A
Cited
US3856890A
Cited
US3860676A
Cited
CA1043034A
Cited
US4092292A
Cited
US4413066A
Cited
US4397981A
Cited
US4381362A
Cited
US4446283A
Cited
JPS58132013A
Cited
US4549041A
Cited
US4689369A
Cited
US4798864A
Cited
EP0370517A2
Cited
EP0501340A2
Cited
US5312861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-03 | 1999-01-02 | 1999-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-03 | 2003-01-02 | 2003-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-03 | 2007-01-02 | 2007-07-04 | $7700.00 | Window Closed / Lapsed |