Patent US4740425A successfully refreshed from Google Patents.
US4740425A
Expired / Lapsed
US
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Zinc oxide in poly(arylene sulfide) compositions
Assignee: Phillips Petroleum Co
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Filing: 1986-12-15
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Granted: 1988-04-26
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Expires: 2006-12-15
Abstract
Abstract Zinc oxide is used in poly(arylene sulfide compositions to improve encapsulation properties and to inhibit color shift. The invention includes electronic components encapsulated with poly(arylene sulfide) compositions containing zinc oxide.
Inventors
- 👤 John E. Leland
- 👤 James S. Dix
- 👤 Robert S. Shue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:41
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/301; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
95 words
An electronic component encapsulated with a composition comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 5 to about 30 weight percent reinforcement, and (iv) about 40 to about 60 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 800 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 2
Dependent Claim
95 words
An electronic component encapsulated with a composition comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 5 to about 30 weight percent reinforcement, and (iv) about 40 to about 60 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 800 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 3
Dependent Claim
29 words
An electronic component in accordance with claim 1 wherein (i) is poly(phenylene sulfide); wherein said filler is silica; and wherein said reinforcement is glass fibers or calcium silicate fibers.
Claim 4
Dependent Claim
21 words
An electronic component in accordance with claim 2 wherein said composition further comprises 3-mercaptopropyltrimethoxysilane and a hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer.
Claim 5
Dependent Claim
31 words
An electronic component in accordance with claim 1 wherein said component is an integrated circuit with wire leads; and wherein said viscosity of said composition does not exceed about 150 poise.
Claim 6
Dependent Claim
95 words
An electronic component encapsulated with a composition comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 20 to about 50 weight percent reinforcement, and (iv) about 18 to about 38 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 1200 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 7
Dependent Claim
95 words
An electronic component encapsulated with a composition comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 20 to about 50 weight percent reinforcement, and (iv) about 18 to about 38 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 1200 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 8
Dependent Claim
31 words
An electronic component in accordance with claim 5 wherein said reinforcement is selected from glass fibers and calcium silicate fibers; and wherein said filler is selected from talc and calcium sulfate.
Claim 9
Dependent Claim
13 words
An electronic component in accordance with claim 6 wherein (i) is poly(phenylene sulfide).
Claim 10
Dependent Claim
19 words
An electronic component in accordance with claim 5 wherein said component is a capacitor wherein said filler is talc.
Claim 11
Dependent Claim
20 words
An electronic component in accordance with claim 5 wherein said component is a connector wherein said filler is calcium sulfate.
Claim 12
Dependent Claim
49 words
An article of manufacture comprising an electronic component encapsulated with a composition comprising (a) poly(arylene sulfide), (b) zinc oxide, (c) pigment selected from monoazo nickel complex pigment, iron oxide pigment, lead chromate pigment, cadmium sulfo-sulfide pigment, and combinations thereof, and, (d) silane selected from organomercaptosilane, organoaminosilane, and combinations thereof.
Claim 13
Dependent Claim
49 words
An article of manufacture comprising an electronic component encapsulated with a composition comprising (a) poly(arylene sulfide), (b) zinc oxide, (c) pigment selected from monoazo nickel complex pigment, iron oxide pigment, lead chromate pigment, cadmium sulfo-sulfide pigment, and combinations thereof, and, (d) silane selected from organomercaptosilane, organoaminosilane, and combinations thereof.
Claim 14
Dependent Claim
75 words
An article of manufacture according to claim 10 wherein the weight ratio of (a) to (b) is at least about 2.5 to 1 and less than about 2,500 to 1; wherein the weight ratio of (a) to (c) is at least about 2.5 to 1 and less than about 2,500 to 1; and wherein the weight ratio of (a) to (d) is at least about 2.5 to 1 and less than about 2,500 to 1.
Claim 15
Dependent Claim
75 words
An article of manufacture according to claim 10 wherein the weight ratio of (a) to (b) is at least about 10 to 1 and less than about 100 to 1; wherein the weight ratio of (a) to (c) is at least about 10 to 1 and less than about 100 to 1; and wherein the weight ratio of (a) to (d) is at least about 10 to 1 and less than about 100 to 1.
Claim 16
Dependent Claim
13 words
An article of manufacture according to claim 12, wherein (a) is poly(phenylene sulfide).
Claim 17
Dependent Claim
23 words
An article of manufacture according to claim 10 wherein the amount of zinc oxide is sufficient to inhibit a temperature caused color shift.
Claim 18
Dependent Claim
16 words
An article of manufacture according to claim 11 wherein (c) is a monoazo nickel complex pigment.
Claim 19
Dependent Claim
27 words
An article of manufacture according to claim 11 wherein (c) is a combination of (i) iron oxide pigment and (ii) lead chromate pigment or cadmium sulfo-sulfide pigment.
Claim 20
Dependent Claim
12 words
An article of manufacture according to claim 11 wherein (d) is organomercaptosilane.
Claim 21
Dependent Claim
12 words
An article of manufacture according to claim 11 wherein (d) is organoaminosilane.
Claim 22
Dependent Claim
12 words
An article of manufacture according to claim 10 wherein (d) is 3-mercaptopropyltrimethoxysilane.
Claim 23
Dependent Claim
24 words
An article of manufacture according to claim 13 further comprising calcium sulfate; wherein (c) is monoazo nickel complex pigment and (d) is N-{2-[3-(trimethoxysilyl)-propylamino]ethyl}-p-vinylbenzylammonium chloride.
Claim 24
Dependent Claim
28 words
An article of manufacture according to claim 13 further comprising talc; wherein (c) is a combination of iron oxide pigment and cadmium sulfo-sulfide pigment and (d) is 3-mercaptopropyltrimethoxysilane.
Claim 25
Dependent Claim
18 words
An electronic component in accordance with claim 5 further comprising a monoazo nickel complex pigment and an organomercaptosilane.
Claim 26
Dependent Claim
12 words
An electronic component in accordance with claim 5 further comprising an organosilane.
Claim 27
Dependent Claim
98 words
An active electronic component encapsulated with a composition consisting essentially of: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 5 to about 30 weight percent reinforcement, and (iv) about 40 to about 60 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 800 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 28
Dependent Claim
98 words
An active electronic component encapsulated with a composition consisting essentially of: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 5 to about 30 weight percent reinforcement, and (iv) about 40 to about 60 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 800 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 29
Dependent Claim
98 words
A passive electronic component encapsulated with a composition consisting essentially of: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 20 to about 50 weight percent reinforcement, and (iv) about 18 to about 38 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 1200 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 30
Dependent Claim
98 words
A passive electronic component encapsulated with a composition consisting essentially of: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent zinc oxide, (iii) about 20 to about 50 weight percent reinforcement, and (iv) about 18 to about 38 weight percent filler; wherein said weight percentages are based upon the total weight of (i), (ii), (iii) and (iv); and wherein the viscosity of said composition does not exceed about 1200 poise as tested on a capillary rheometer at 650° F. and at a shear rate of 1000 (sec) -1 .
Claim 31
Dependent Claim
108 words
An article of manufacture comprising an electronic component encapsulated with a composition consisting essentially of: (a) poly(arylene sulfide), (b) zinc oxide, (c) pigment selected from monoazo nickel complex pigment, iron oxide pigment, lead chromate pigment, cadmium sulfo-sulfide pigment, and combinations thereof, and (d) silane selected from organomercaptosilane, organoaminosilane, and combinations thereof, wherein the weight ratio of (a) to (b) is at least about 2.5 to 1 to about 2,500, to 1; wherein the weight ratio of (a) to (c) is about 2.5 to 1 to about 2,500 to 1; and wherein the weight ratio of (a) to (d) is about 2.5 to 1 to about 2,500 to 1.
Claim 32
Dependent Claim
108 words
An article of manufacture comprising an electronic component encapsulated with a composition consisting essentially of: (a) poly(arylene sulfide), (b) zinc oxide, (c) pigment selected from monoazo nickel complex pigment, iron oxide pigment, lead chromate pigment, cadmium sulfo-sulfide pigment, and combinations thereof, and (d) silane selected from organomercaptosilane, organoaminosilane, and combinations thereof, wherein the weight ratio of (a) to (b) is at least about 2.5 to 1 to about 2,500, to 1; wherein the weight ratio of (a) to (c) is about 2.5 to 1 to about 2,500 to 1; and wherein the weight ratio of (a) to (d) is about 2.5 to 1 to about 2,500 to 1.
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) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |