Patent US4522875A successfully refreshed from Google Patents.
US4522875A
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Stampable sheets of bonded laminate of metal sheet and fiber mat reinforced poly(arylene sulfide) and method of preparation using radio frequency energy
Assignee: Phillips Petroleum Co
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Filing: 1983-09-30
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Granted: 1985-06-11
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Expires: 2003-09-30
Abstract
Abstract A method for preparing stampable composites of poly(arylene sulfide) compositions that are radio frequency energy sensitive and reinforced with fibrous or filamentous mat; the stampable composites prepared thereby; a method for preparing a laminate with metal sheet and fiber mat reinforced poly(arylene sulfide) in which the poly(arylene sulfide) is sensitive to radio frequency energy; a bonded laminate produced thereby; stamped objects produced from the composites and/or laminates.
Inventors
- 👤 Robert D. Still, Jr.
- 👤 Paul J. Boeke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:18
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/08; B29; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B29B15/122; B29B15/125; B29B15/127; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B32B15/00; B32B15/04; B32B15/08; B32B3/00; B32B3/26; B32B38/0008; C; C08; C08L; C08L81/00; C08L81/02; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0855; B29K; B29K2081/00; B29K2081/04; B29K2105/00; B29K2105/0058; B29K2105/0064; B29K2105/06; B29K2105/08; B29K2105/0854; B29K2105/25; B29K2105/251; B29K2277/00; B29K2277/10; B29K2307/00; B29K2309/00; B29K2309/08; B29K2705/00; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2310/00; B32B2310/08; B32B2310/0806; B32B2310/0868; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10; C08L9/00; C08L9/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533; Y10T442/00; Y10T442/20; Y10T442/2861; Y10T442/2893; Y10T442/2902; Y10T442/2926; Y10T442/2984; Y10T442/2992; Y10T442/60; Y10T442/654; Y10T442/656
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
31 words
A porous composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer.
Claim 2
Dependent Claim
31 words
A porous composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer.
Claim 3
Dependent Claim
31 words
A non-porous composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer.
Claim 4
Dependent Claim
31 words
A non-porous composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer.
Claim 5
Dependent Claim
31 words
A porous composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer.
Claim 6
Dependent Claim
31 words
A porous composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer.
Claim 7
Independent Claim
140 words
A method for preparing a porous composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and radio frequency energy sensitizer said method comprising: (a) impregnating a mat of fibrous reinforcing material with an admixture comprising poly(arylene sulfide) powder admixed with an amount of a radio frequency energy sensitizing composition sufficient to produce an admixture sensitive to melting using radio frequency energy, said admixture present in an amount that on treatment with radio frequency energy produces a discontinuous matrix, (b) subjecting said mat impregnated with said admixture to sufficient radio frequency energy to melt said admixture thereby forming a discontinuous matrix of sensitized poly(arylene sulfide) surrounding said reinforcing material with a fused coating, and (c) cooling said matrix coated with poly(arylene sulfide) to produce a reinforced composite.
Claim 8
Independent Claim
140 words
A method for preparing a porous composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and radio frequency energy sensitizer said method comprising: (a) impregnating a mat of fibrous reinforcing material with an admixture comprising poly(arylene sulfide) powder admixed with an amount of a radio frequency energy sensitizing composition sufficient to produce an admixture sensitive to melting using radio frequency energy, said admixture present in an amount that on treatment with radio frequency energy produces a discontinuous matrix, (b) subjecting said mat impregnated with said admixture to sufficient radio frequency energy to melt said admixture thereby forming a discontinuous matrix of sensitized poly(arylene sulfide) surrounding said reinforcing material with a fused coating, and (c) cooling said matrix coated with poly(arylene sulfide) to produce a reinforced composite.
Claim 9
Dependent Claim
13 words
A method of claim 4 wherein said impregnating is an electrostatic coating process.
Claim 10
Dependent Claim
15 words
A method of claim 5 wherein said impregnated mat of (b) is compacted before cooling.
Claim 11
Dependent Claim
37 words
A composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer prepared by the method of claim 5.
Claim 12
Dependent Claim
40 words
A method of claim 4 wherein said impregnation is spraying a slurry of said admixture in a liquid carrier onto said mat and the temperature induced to melt said poly(arylene sulfide) is sufficient to remove volatile components of said carrier.
Claim 13
Dependent Claim
15 words
A method of claim 8 wherein said impregnated mat of (b) is compacted before cooling.
Claim 14
Dependent Claim
37 words
A composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer prepared by the method of claim 8.
Claim 15
Dependent Claim
40 words
A method of claim 4 wherein said impregnation is dipping said mat into a slurry of said admixture in a liquid carrier and the temperature induced to melt said poly(arylene sulfide) is sufficient to remove volatile components of said carrier.
Claim 16
Dependent Claim
15 words
A method of claim 11 wherein said impregnated mat of (b) is compacted before cooling.
Claim 17
Dependent Claim
37 words
A composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer prepared by the method of claim 11.
Claim 18
Dependent Claim
15 words
A method of claim 4 wherein said impregnated mat of (b) is compacted before cooling.
Claim 19
Dependent Claim
13 words
A method of claim 4 wherein said reinforcing mat comprises continuous filamentous material.
Claim 20
Dependent Claim
18 words
A method of claim 4 wherein said reinforcing mat comprises fibrous material that has been chopped or cut.
Claim 21
Dependent Claim
27 words
A method of claim 16 wherein the length of said fibers is in a range of about 0.64 cm (0.25 in) to about 25.4 cm (10 in).
Claim 22
Dependent Claim
36 words
A composite of fibrous reinforcing mat surrounded by a discontinuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and radio frequency energy sensitizer prepared by the method of claim 4.
Claim 23
Dependent Claim
41 words
A method of claim 4 further comprising contacting at least one surface of said composite of step (c) with a sheet of metal under conditions of temperature and pressure to bond said sheet of metal to said surface of said composite.
Claim 24
Dependent Claim
9 words
A laminate prepared by the method of claim 19.
Claim 25
Dependent Claim
58 words
A method of claim 4 further comprising contacting at least one surface of said composite of step (c) with a surface of a stratum of poly(arylene sulfide) that has been bonded to a surface of a sheet of metal under conditions of temperature and pressure to bond said stratum of poly(arylene sulfide) to said surface of said composite.
Claim 26
Dependent Claim
9 words
A laminate prepared by the method of claim 21.
Claim 27
Independent Claim
139 words
A method for preparing a composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and radio frequency energy sensitizer said method comprising: (a) impregnating a mat of fibrous reinforcing material with an admixture comprising poly(arylene sulfide) powder admixed with an amount of a radio frequency energy sensitizing composition sufficient to produce an admixture sensitive to melting using radio frequency energy, said admixture present in an amount that on treatment with radio frequency energy produces a continuous matrix, (b) subjecting said mat impregnated with said admixture to sufficient radio frequency energy to melt said admixture thereby forming a continuous matrix of sensitized poly(arylene sulfide) surrounding said reinforcing material with a fused coating, and (c) cooling said material coated with poly(arylene sulfide) to produce a reinforced composite.
Claim 28
Independent Claim
139 words
A method for preparing a composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and radio frequency energy sensitizer said method comprising: (a) impregnating a mat of fibrous reinforcing material with an admixture comprising poly(arylene sulfide) powder admixed with an amount of a radio frequency energy sensitizing composition sufficient to produce an admixture sensitive to melting using radio frequency energy, said admixture present in an amount that on treatment with radio frequency energy produces a continuous matrix, (b) subjecting said mat impregnated with said admixture to sufficient radio frequency energy to melt said admixture thereby forming a continuous matrix of sensitized poly(arylene sulfide) surrounding said reinforcing material with a fused coating, and (c) cooling said material coated with poly(arylene sulfide) to produce a reinforced composite.
Claim 29
Dependent Claim
13 words
A method of claim 23 wherein said impregnating is an electrostatic coating process.
Claim 30
Dependent Claim
15 words
A method of claim 24 wherein said impregnated mat of (b) is compacted before cooling.
Claim 31
Dependent Claim
37 words
A composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer prepared by the method of claim 24.
Claim 32
Dependent Claim
40 words
A method of claim 23 wherein said impregnation is spraying a slurry of said admixture in a liquid carrier onto said mat and the temperature induced to melt said poly(arylene sulfide) is sufficient to remove volatile components of said carrier.
Claim 33
Dependent Claim
15 words
A method of claim 27 wherein said impregnated mat of (b) is compacted before cooling.
Claim 34
Dependent Claim
37 words
A composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer prepared by the method of claim 27.
Claim 35
Dependent Claim
40 words
A method of claim 23 wherein said impregnation is dipping said mat into a slurry of said admixture in a liquid carrier and the temperature induced to melt said poly(arylene sulfide) is sufficient to remove volatile components of said carrier.
Claim 36
Dependent Claim
15 words
A method of claim 30 wherein said impregnated mat of (b) is compacted before cooling.
Claim 37
Dependent Claim
37 words
A composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and a radio frequency energy sensitizer prepared by the method of claim 30.
Claim 38
Dependent Claim
15 words
A method of claim 23 wherein said impregnated mat of (b) is compacted before cooling.
Claim 39
Dependent Claim
13 words
A method of claim 23 wherein said reinforcing mat comprises continuous filamentous material.
Claim 40
Dependent Claim
18 words
A method of claim 23 wherein said reinforcing mat comprises fibrous material that has been chopped or cut.
Claim 41
Dependent Claim
27 words
A method of claim 35 wherein the length of said fibers is in a range of about 0.64 cm (0.25 in) to about 25.4 cm (10 in).
Claim 42
Dependent Claim
36 words
A composite of fibrous reinforcing mat surrounded by a continuous matrix forming a fused coating of the fibrous mat said matrix comprising poly(arylene sulfide) and radio frequency energy sensitizer prepared by the method of claim 23.
Claim 43
Dependent Claim
41 words
A method of claim 5 further comprising contacting at least one surface of said composite of step (c) with a sheet of metal under conditions of temperature and pressure to bond said sheet of metal to said surface of said composite.
Claim 44
Dependent Claim
9 words
A laminate prepared by the method of claim 38.
Claim 45
Dependent Claim
58 words
A method of claim 23 further comprising contacting at least one surface of said composite of step (c) with a surface of a stratum of poly(arylene sulfide) that has been bonded to a surface of a sheet of metal under conditions of temperature and pressure to bond said stratum of poly(arylene sulfide) to said surface of said composite.
Claim 46
Dependent Claim
9 words
A laminate prepared by the method of claim 40.
References Cited (Backward Citations)
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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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |