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US5169716A
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Encapsulant compositions for use in signal transmission devices
Assignee: 3M Co
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Filing: 1989-05-11
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Granted: 1992-12-08
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Expires: 2009-05-11
Abstract
Abstract The invention provides an encapsulant composition capable of use with signal transmission devices, such as electrical or optical cable. The composition is the extended reaction product of an admixture of an anhydride functionalized composition and a crosslinking agent.
Inventors
- 👤 Thomas S. Croft
- 👤 Hartwick A. Haugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:38
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/2964
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
118 words
A signal transmission component comprising: a) a signal transmission device; and b) a dielectric encapsulant which encapsulates said device, said encapsulant having a C-H adhesion value of at least 4.0 comprising: the extended reaction product of an admixture of: a) an effective amount of an anhydride functionalized compound having reactive anhydride sites; and b) an effective amount of a crosslinking agent which reacts with the anhydride sites of said compound to form a cured crosslinked material; said reaction product extended with at least one organic plasticizer present in the range of between 5 and 95 percent by weight of said encapsulant to form a plasticized system which is essentially inert to the reaction product and substantially non-exuding therefrom.
Claim 2
Dependent Claim
118 words
A signal transmission component comprising: a) a signal transmission device; and b) a dielectric encapsulant which encapsulates said device, said encapsulant having a C-H adhesion value of at least 4.0 comprising: the extended reaction product of an admixture of: a) an effective amount of an anhydride functionalized compound having reactive anhydride sites; and b) an effective amount of a crosslinking agent which reacts with the anhydride sites of said compound to form a cured crosslinked material; said reaction product extended with at least one organic plasticizer present in the range of between 5 and 95 percent by weight of said encapsulant to form a plasticized system which is essentially inert to the reaction product and substantially non-exuding therefrom.
Claim 3
Dependent Claim
17 words
The component of claim 1 wherein said anhydride functionalized compound is a maleic anhydride functionalized vegetable oil.
Claim 4
Dependent Claim
15 words
The component of claim 1 wherein said anhydride functionalized compound comprises an anhydride functionalized polyolefin.
Claim 5
Dependent Claim
16 words
The component of claim 3 wherein said anhydride functionalized compound is a maleic anhydride functionalized polybutadiene.
Claim 6
Dependent Claim
29 words
The component of claim 1 wherein said at least one organic plasticizer is present in the range of between about 35 and 85 percent by weight of the encapsulant.
Claim 7
Dependent Claim
36 words
The component of claim 1 wherein said at least one organic plasticizer is selected from the group consisting of petroleum based hydrocarbon oils, vegetable oils, polyalphaolefins, cyclic polyolefins, pine oil derivatives, phosphate esters and mixtures thereof.
Claim 8
Dependent Claim
21 words
The component of claim 1 wherein said at least one organic plasticizer comprises a mixture of hydrocarbon oil and an ester.
Claim 9
Dependent Claim
16 words
The component of claim 7 wherein said at least one organic plasticizer comprises a vegetable oil.
Claim 10
Dependent Claim
17 words
The component of claim 1 wherein said encapsulant has a Polycarbonate Compatability Value of at least 80.
Claim 11
Dependent Claim
17 words
The component of claim 9 wherein said encapsulant has a Polycarbonate Compatability Value of at least 90.
Claim 12
Dependent Claim
25 words
The component of claim 1 further including an effective amount of a catalyst for the reaction between said anhydride functionalized compound and said crosslinking agent.
Claim 13
Dependent Claim
12 words
The component of claim 11 wherein said catalyst is a tertiary amine.
Claim 14
Dependent Claim
23 words
The component of claim 12 wherein said catalyst is selected from the group consisting of 1,8-diazabicyclo (5.4.0)-undec-7-ene and 1,5-diazabicyclo-(4.3.0)non-5-ene, tetradecyldimethylamine, and salts thereof.
Claim 15
Dependent Claim
20 words
The component of claim 1 wherein said crosslinking agent is selected from the group consisting of polyols, polyamines, and polythiols.
Claim 16
Dependent Claim
12 words
The component of claim 14 wherein said crosslinking agent is a polyol.
Claim 17
Dependent Claim
13 words
The component of claim 15 wherein said polyol is a ricinoleic acid derivative.
Claim 18
Dependent Claim
13 words
The component of claim 15 wherein said crosslinking agent is a polyalkadiene polyol.
Claim 19
Dependent Claim
13 words
The component of claim 17 wherein said crosslinking agent is a polybutadiene polyol.
Claim 20
Dependent Claim
18 words
The component of claim 1 wherein the solubility parameter of said encapsulant is between about 7.0 and 9.5.
Claim 21
Dependent Claim
19 words
The component of claim 19 wherein the total solubility parameter of said encapsulant is between about 7.9 and 9.5.
Claim 22
Dependent Claim
19 words
The component of claim 20 wherein the total solubility parameter of said encapsulant is between about 7.9 and 8.6.
Claim 23
Dependent Claim
19 words
The component of claim 21 wherein the total solubility parameter of said encapsulant is between about 8.0 and 9.3.
Claim 24
Dependent Claim
29 words
The component of claim 22 wherein said at least one organic plasticizer is present in the range of between about 50 and 70 percent by weight of the encapsulant.
Claim 25
Dependent Claim
14 words
The component of claim 1 wherein said device comprises an electrical or optical cable.
Claim 26
Dependent Claim
18 words
The component of claim 24 wherein said encapsulant is a pressure plug for said electrical or optical cable.
Claim 27
Dependent Claim
19 words
The component of claim 24 wherein said electrical or optical cable comprises a plurality of electrical or optical conductors.
Claim 28
Dependent Claim
18 words
The component of claim 26 wherein said plurality of electrical or optical conductors are surrounded by a grease.
Claim 29
Dependent Claim
17 words
The component of claim 27 wherein said encapsulant has a C-H adhesion value of at least 13.0.
Claim 30
Dependent Claim
17 words
The component of claim 28 wherein said encapsulant has a Polycarbonate Compatability Value of at least 90.
Claim 31
Dependent Claim
12 words
The component of claim 24 further including at least one connecting device.
Claim 32
Dependent Claim
11 words
The component of claim 30 wherein said connecting device comprises polycarbonate.
Claim 33
Dependent Claim
17 words
The component of claim 31 wherein said encapsulant has a Polycarbonate Compatibility Value of at least 80.
Claim 34
Dependent Claim
17 words
The component of claim 32 wherein said encapsulant has a Polycarbonate Compatibility Value of at least 90.
Claim 35
Dependent Claim
62 words
The component of claim 1 wherein said device comprises a) an outer enclosure member; b) at least one electrical or optical cable, including at least one conductor; and c) at least one connecting device located inside said outer enclosure member and joining said at least one conductor; wherein said encapsulant substantially fills said enclosure member, encapsulating said at least one connecting device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-08 | 1996-06-08 | 1996-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-08 | 2000-06-08 | 2000-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-08 | 2004-06-08 | 2004-12-08 | $7700.00 | Window Closed / Lapsed |