US4176098A
Expired / Lapsed
US
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Arc resistant composition
Assignee: Phillips Petroleum Co
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Filing: 1978-06-12
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Granted: 1979-11-27
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Expires: 1998-06-12
Abstract
Abstract An arc resistant composition is produced by incorporating into poly(arylene sulfide) about 30-70 percent by weight of fillers including 20-50 percent by weight of the total composition of at least one of clay and talc. Glass, calcium carbonate, lithium carbonate, and zinc stearate can also be present in the composition to improve physical properties and processing. Addition of small quantities of silanes to the arc resistant composition improves its water resistance and linear coefficient of expansion without impairing its arc resistance or physical properties. Electrical components which must be arc resistant and low wattage resistance heater housings can be produced from the compositions made in accordance with this invention.
Inventors
- 👤 Donald G. Needham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/292; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K3/34; C08K3/346; H01B3/00; H01B3/18; H01B3/30; H01B3/301
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
47 words
An arc resistant composition which comprises: a poly(arylene sulfide); about 20 to about 50 weight percent of the total composition of at least one additive chosen from among clay and talc; and about 1 to about 5 percent by weight of the total composition of lithium carbonate.
Claim 2
Dependent Claim
47 words
An arc resistant composition which comprises: a poly(arylene sulfide); about 20 to about 50 weight percent of the total composition of at least one additive chosen from among clay and talc; and about 1 to about 5 percent by weight of the total composition of lithium carbonate.
Claim 3
Dependent Claim
29 words
An arc resistant composition as claimed in claim 1 which also comprises glass in an amount of about 20 to about 35 percent by weight of the total composition.
Claim 4
Dependent Claim
13 words
An arc resistant composition of claim 2 wherein poly(arylene sulfide) is poly(phenylene sulfide).
Claim 5
Dependent Claim
57 words
An arc resistant composition which comprises: a poly(arylene sulfide); about 20 to about 50 weight percent of the total composition of at least one additive chosen from clay and talc; and about 0.5 to about 5 percent by weight of the total composition of silanes chosen from among the group consisting of alkylsilanes, alkyloxysilanes, and polymers thereof.
Claim 6
Dependent Claim
57 words
An arc resistant composition which comprises: a poly(arylene sulfide); about 20 to about 50 weight percent of the total composition of at least one additive chosen from clay and talc; and about 0.5 to about 5 percent by weight of the total composition of silanes chosen from among the group consisting of alkylsilanes, alkyloxysilanes, and polymers thereof.
Claim 7
Dependent Claim
23 words
An arc resistant composition as claimed in claim 4 wherein said silanes are selected from the group consisting of: γ-glycidoxypropyltrimethoxysilane, methyltrimethoxysilane, and polyisoxymethoxysilane.
Claim 8
Dependent Claim
34 words
An arc resistant composition wherein poly(phenylene sulfide) comprises about 45 weight percent of the total composition and clay, talc, and glass comprise about 17.5, 17.5, and 20 weight percent of the total composition, respectively.
Claim 9
Dependent Claim
34 words
An arc resistant composition wherein poly(phenylene sulfide) comprises about 45 weight percent of the total composition and clay, talc, and glass comprise about 17.5, 17.5, and 20 weight percent of the total composition, respectively.
Claim 10
Dependent Claim
30 words
An arc resistant composition as claimed in claim 6 further comprising about 0.5 to about 1 weight percent of silanes selected from the group consisting of: γ-glycidoxypropyltrimethoxysilane, methyltrimethoxysilane, and polyisoxymethoxysilane.
Claim 11
Dependent Claim
70 words
An arc resistant composition as claimed in claim 3 wherein said poly(phenylene sulfide) comprises about 35 weight percent of the total composition, talc is about 28.9 weight percent of the total composition, glass is about 35 weight percent of the total composition, lithium carbonate is about 1.0 weight percent of the total composition, and further comprising zinc stearate in an amount of about 0.1 weight percent of the total composition.
Claim 12
Dependent Claim
74 words
A process for producing an arc resistant composition which comprises (a) blending uncured or partially cured poly(arylene sulfide) with (1) about 20 to about 50 percent by weight of the total composition of at least one additive chosen from among clay and talc and (2) about 0.5 to about 5 percent by weight of silanes selected from the group consisting of alkylsilanes, alkyloxysilanes, and polymers thereof, and (b) subjecting the blend to curing conditions.
Claim 13
Dependent Claim
74 words
A process for producing an arc resistant composition which comprises (a) blending uncured or partially cured poly(arylene sulfide) with (1) about 20 to about 50 percent by weight of the total composition of at least one additive chosen from among clay and talc and (2) about 0.5 to about 5 percent by weight of silanes selected from the group consisting of alkylsilanes, alkyloxysilanes, and polymers thereof, and (b) subjecting the blend to curing conditions.
Claim 14
Dependent Claim
19 words
A method of claim 9 wherein said silanes are selected from the group consisting of: γ-glycidoxypropyltrimethoxysilane, methyltrimethoxysilane, and polyisoxymethoxysilane.
Claim 15
Dependent Claim
68 words
A process for producing an arc resistant composition which comprises (a) blending uncured or partially cured poly(arylene sulfide) with (1) about 20 to about 50 percent by weight of the total composition of at least one additive chosen from among clay and talc and (2) about 1 to about 5 percent by weight of the total composition of lithium carbonate, and (b) subjecting the blend to curing conditions.
Claim 16
Dependent Claim
68 words
A process for producing an arc resistant composition which comprises (a) blending uncured or partially cured poly(arylene sulfide) with (1) about 20 to about 50 percent by weight of the total composition of at least one additive chosen from among clay and talc and (2) about 1 to about 5 percent by weight of the total composition of lithium carbonate, and (b) subjecting the blend to curing conditions.
Claim 17
Dependent Claim
33 words
A method of claim 11 wherein glass in an amount of about 20 to about 35 percent by weight of the total composition is also blended with uncured or partially cured poly(arylene sulfide).
Claim 18
Dependent Claim
12 words
A method of claim 12 where the poly(arylene sulfide) is poly(phenylene sulfide).
Claim 19
Dependent Claim
65 words
A method of claim 13 wherein the poly(phenylene sulfide) comprises about 35 weight percent of the total composition, talc is about 28.9 weight percent of the total composition, glass is about 35 weight percent of the total composition, lithium carbonate is 1.0 weight percent of the total composition, and further comprising zinc stearate in an amount of about 0.1 weight percent of the total composition.
Claim 20
Dependent Claim
56 words
A process for producing an arc resistant composition which comprises blending uncured or partially cured poly(phenylene sulfide) in amount of about 45 weight percent of the total composition and clay, talc, and glass in an amounts of about 17.5, 17.5, and 20 weight percent of the total composition, respectively and subjecting the blend to curing conditions.
Claim 21
Dependent Claim
56 words
A process for producing an arc resistant composition which comprises blending uncured or partially cured poly(phenylene sulfide) in amount of about 45 weight percent of the total composition and clay, talc, and glass in an amounts of about 17.5, 17.5, and 20 weight percent of the total composition, respectively and subjecting the blend to curing conditions.
Claim 22
Dependent Claim
29 words
A method of claim 15 wherein said composition further comprises about 0.5 to about 1 weight percent of silanes selected from the group consisting of: γ-glycidoxypropyltrimethoxysilane, methyltrimethoxysilane, and polyisoxymethoxysilane.
Claim 23
Dependent Claim
9 words
A product formed by the process of claim 11.
Claim 24
Dependent Claim
9 words
A product formed by the process of claim 9.
Claim 25
Dependent Claim
9 words
A product formed by the process of claim 14.
Claim 26
Dependent Claim
9 words
A product formed by the process of claim 15.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |