US4514588A
Expired / Lapsed
US
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Encapsulated electronic components and encapsulation compositions
Assignee: Phillips Petroleum Co
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Filing: 1982-12-28
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Granted: 1985-04-30
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Expires: 2002-12-28
Abstract
Abstract Electronic components are encapsulated with a poly(arylene sulfide) composition containing hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer. The invention also includes certain encapsulation compositions containing poly(arylene sulfide), hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer, reinforcement and filler.
Inventors
- 👤 William H. Beever
- 👤 Robert S. Shue
- 👤 Clifford W. Childers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:06
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/12; C; C08; C08L; C08L81/00; C08L81/02; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/301; H01C; H01C1/00; H01C1/02; H01C1/034; H05; H05K; H05K5/00; H05K5/06; H05K5/065; H10; H10W; H10W74/00; H10W74/40; H10W74/47; H10W74/473; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10; C08L53/00; C08L53/02; C08L9/00; Y; Y10; Y10S; Y10S525/00; Y10S525/901
Claims Analysis
Total Claims: 57
Claim 1
Independent Claim
39 words
An article of manufacture comprising an electronic component encapsulated with a composition; wherein said composition comprises (a) poly(arylene sulfide) and (b) hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer; wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer.
Claim 2
Dependent Claim
39 words
An article of manufacture comprising an electronic component encapsulated with a composition; wherein said composition comprises (a) poly(arylene sulfide) and (b) hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer; wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer.
Claim 3
Dependent Claim
13 words
An article of manufacture according to claim 1 wherein (a) is poly(phenylene sulfide).
Claim 4
Dependent Claim
17 words
An article of manufacture according to claim 1 wherein the copolymer of (b) is a random copolymer.
Claim 5
Dependent Claim
17 words
An article of manufacture according to claim 1 wherein the copolymer of (b) is a block copolymer.
Claim 6
Dependent Claim
16 words
An article of manufacture according to claim 4 wherein said copolymer is a linear block copolymer.
Claim 7
Dependent Claim
16 words
An article of manufacture according to claim 4 wherein said copolymer is a radial block copolymer.
Claim 8
Dependent Claim
32 words
An article of manufacture according to claim 4 wherein the monovinyl-substituted aromatic content of said copolymer is about 10 to about 90 weight percent based upon the total weight of said copolymer.
Claim 9
Dependent Claim
23 words
An article of manufacture according to claim 7 wherein said copolymer is characterized by at least about 80 percent aliphatic double bond hydrogenation.
Claim 10
Dependent Claim
24 words
An article of manufacture according to claim 8 wherein said copolymer is further characterized by less than about 25 percent aromatic double bond hydrogention.
Claim 11
Dependent Claim
34 words
An article of manufacture according to claim 7 wherein said copolymer is characterized by at least about 99 percent aliphatic double bond hydrogenation and by less than about 5 percent aromatic double bond hydrogenation.
Claim 12
Dependent Claim
13 words
An article of manufacture according to claim 10 wherein (a) is poly(phenylene sulfide).
Claim 13
Dependent Claim
23 words
An article of manufacture according to claim 7 wherein said copolymer has a weight average molecular weight of about 25,000 to about 350,000.
Claim 14
Dependent Claim
14 words
An article of manufacture according to claim 1 wherein said composition further comprises reinforcement.
Claim 15
Dependent Claim
18 words
An article of manufacture according to claim 13 wherein said reinforcement is glass fibers or calcium silicate fibers.
Claim 16
Dependent Claim
14 words
An article of manufacture according to claim 1 wherein said composition further comprises filler.
Claim 17
Dependent Claim
17 words
An article of manufacture according to claim 15 wherein said filler is silica, talc or calcium sulfate.
Claim 18
Dependent Claim
48 words
An article of manufacture according to claim 15 wherein said composition further comprises reinforcement; and wherein the amount of (b) in said composition is within the range of about 0.1 to about 10 weight percent based upon the total weight of (a), (b), said reinforcement and said filler.
Claim 19
Dependent Claim
19 words
An article of manufacture according to claim 17 wherein said range is about 0.5 to about 5 weight percent.
Claim 20
Dependent Claim
22 words
An article of manufacture according to claim 16 wherein said composition further comprises reinforcement selected from glass fibers and calcium silicate fibers.
Claim 21
Dependent Claim
15 words
An article of manufacture according to claim 1 wherein (b) is hydrogenated 1,3-butadiene/styrene block copolymer.
Claim 22
Dependent Claim
15 words
An article of manufacture according to claim 1 wherein (b) is hydrogenated isoprene/styrene block copolymer.
Claim 23
Dependent Claim
76 words
An article of manufacture according to claim 21 wherein the styrene content of said block copolymer is about 10 to about 90 weight percent based upon the total weight of said copolymer; wherein said block copolymer is characterized by at least about 80 percent aliphatic double bond hydrogenation and less than about 25 percent aromatic double bond hydrogenation; and wherein said hydrogenated block copolymer has a weight average molecular weight of about 25,000 to about 350,000.
Claim 24
Dependent Claim
43 words
An article of manufacture as recited in claim 1 wherein said electronic component is selected from the group consisting of capacitors resistors resistor networks integrated circuits transistors diodes triodes thyristors coils varistors connectors condensers transducers crystal oscillators fuses rectifiers power supplies, and microswitches.
Claim 25
Dependent Claim
15 words
An article of manufacture according to claim 1 wherein said composition further comprises an organosilane.
Claim 26
Dependent Claim
112 words
A composition for encapsulating an active electronic component comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer, (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 27
Dependent Claim
112 words
A composition for encapsulating an active electronic component comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer, (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
23 words
A composition in accordance with claim 25 wherein said filler is silica; and wherein said reinforcement is glass fibers or calcium silicate fibers.
Claim 29
Dependent Claim
12 words
A composition in accordance with claim 26 wherein (i) is poly(phenylene sulfide).
Claim 30
Dependent Claim
73 words
A composition according to claim 27 wherein (ii) is a hydrogenated isoprene/styrene block copolymer having a styrene content of about 10 to about 90 weight percent based upon the total weight of said copolymer is characterized by at least about 80 percent aliphatic double bond hydrogenation and less than about 25 percent aromatic double bond hydrogenation; and wherein said hydrogenated copolymer has a weight average molecular weight of about 25,000 to about 350,000.
Claim 31
Dependent Claim
19 words
A composition in accordance with claim 25 wherein said viscosity of said composition does not exceed about 150 poise.
Claim 32
Dependent Claim
10 words
A composition according to claim 25 further comprising an organosilane.
Claim 33
Dependent Claim
111 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 hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer, (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 ; wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer.
Claim 34
Dependent Claim
111 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 hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer, (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 ; wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer.
Claim 35
Dependent Claim
27 words
An electric component as recited in claim 31 wherein (i) is poly(phenylene sulfide); wherein (iii) is glass fibers or calcium silicate fibers; and wherein (iv) is silica.
Claim 36
Dependent Claim
78 words
An electronic component as recited in claim 32 wherein (ii) is a hydrogenated isoprene/styrene block copolymer having a styrene content of about 10 to about 90 weight percent based upon the total weight of said copolymer; wherein said copolymer is characterized by at least about 80 percent aliphatic double bond hydrogenation and less than about 25 percent aromatic double bond hydrogenation; and wherein said hydrogenated copolymer has a weight average molecular weight of about 25,000 to about 350,000.
Claim 37
Dependent Claim
32 words
An electronic component as recited in claim 31 wherein said electronic component is an integrated circuit with wire leads and wherein said viscosity of said composition does not exceed about 150 poise.
Claim 38
Dependent Claim
110 words
A composition for encapsulating passive electronic components comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer, (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 of 1000 (sec) -1 .
Claim 39
Dependent Claim
110 words
A composition for encapsulating passive electronic components comprising: (i) about 25 to about 45 weight percent poly(arylene sulfide), (ii) about 0.1 to about 10 weight percent hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer, (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 of 1000 (sec) -1 .
Claim 40
Dependent Claim
17 words
A composition in accordance with claim 35 wherein said filler is selected from talc and calcium sulfate.
Claim 41
Dependent Claim
19 words
A composition in accordance with claim 36 wherein said reinforcement is selected from glass fibers and calcium silicate fibers.
Claim 42
Dependent Claim
12 words
A composition in accordance with claim 35 wherein (i) is poly(phenylene sulfide).
Claim 43
Dependent Claim
76 words
A composition according to claim 35 wherein (ii) is a hydrogenated isoprene/styrene block copolymer having a styrene content of about 10 to about 90 weight percent based upon the total weight of said copolymer; wherein said copolymer is characterized by at least about 80 percent aliphatic double bond hydrogenation and less than about 25 percent aromatic double bond hydrogenation; and wherein said hydrogenated copolymer has a weight average molecular weight of about 25,000 to about 350,000.
Claim 44
Dependent Claim
12 words
A composition in accordance with claim 37 wherein said filler is talc.
Claim 45
Dependent Claim
13 words
A composition in accordance with claim 37 wherein said filler is calcium sulfate.
Claim 46
Dependent Claim
11 words
A composition in accordance with claim 35 further comprising an organosilane.
Claim 47
Dependent Claim
111 words
An electronic component encapsulated with a composition comprising: (i) about 25 to about 45 weight percent poly(amylene sulfide), (ii) about 0.1 to about 10 weight percent hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer, (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 ; wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer.
Claim 48
Dependent Claim
111 words
An electronic component encapsulated with a composition comprising: (i) about 25 to about 45 weight percent poly(amylene sulfide), (ii) about 0.1 to about 10 weight percent hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer, (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 ; wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic monomer.
Claim 49
Dependent Claim
13 words
An electronic component as recited in claim 43 wherein (i) is poly(phenylene sulfide).
Claim 50
Dependent Claim
78 words
An electronic component as recited in claim 43 wherein (ii) is a hydrogenated isoprene/styrene block copolymer having a styrene content of about 10 to about 90 weight percent based upon the total weight of said copolymer; wherein said copolymer is characterized by at least about 80 percent aliphatic double bond hydrogenation and less than about 25 percent aromatic double bond hydrogenation; and wherein said hydrogenated copolymer has a weight average molecular weight of about 25,000 to about 350,000.
Claim 51
Dependent Claim
33 words
An electronic component as recited in claim 43 wherein said electronic component is a capacitor; wherein said reinforcement is selected from glass fibers and calcium silicate fibers; and wherein said filler is talc.
Claim 52
Dependent Claim
34 words
An electronic component as recited in claim 43 wherein said electronic component is a connector; wherein said reinforcement is selected from glass fibers and calcium silicate fibers; and wherein said filler is calcium sulfate.
Claim 53
Independent Claim
57 words
A method comprising: (a) producing mixing comprising (i) poly(arylene sulfide) and (ii) hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic momomer, (b) heating said mixture to a temperature of at least about the melting point of said poly(arylene sulfide), and (c) encapsulating an electronic component with said mixture.
Claim 54
Independent Claim
57 words
A method comprising: (a) producing mixing comprising (i) poly(arylene sulfide) and (ii) hydrogenated conjugated diene/monovinyl-substituted aromatic copolymer wherein said copolymer consists essentially of conjugated diene monomer and monovinyl-substituted aromatic momomer, (b) heating said mixture to a temperature of at least about the melting point of said poly(arylene sulfide), and (c) encapsulating an electronic component with said mixture.
Claim 55
Dependent Claim
14 words
A method as recited in claim 48 wherein said poly(arylene sulfide) is poly(phenylene sulfide).
Claim 56
Dependent Claim
20 words
A method as recited in claim 48 wherein said mixture produced in (a) further comprises (iii) reinforcement and (iv) filler.
Claim 57
Dependent Claim
17 words
A method as recited in claim 48 wherein injection molding is used to encapsulate said electronic component.
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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) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |