US4016331A
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Composite polymeric material formed with an epitaxial crystalline film of polymeric sulfur nitride, and method of preparing same
Assignee: University of Pennsylvania
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Filing: 1976-01-26
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Granted: 1977-04-05
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Expires: 1996-01-26
Abstract
Abstract A composite polymeric material having metallic surface properties is prepared by subliming solid crystalline polymeric sulfur nitride to a vapor, and thereafter condensing the polymeric sulfur nitride vapor onto the surface of a highly-oriented thermoplastic polymeric substrate to thereby form on the substrate an epitaxial crystalline polymeric sulfur nitride film. The polymeric sulfur nitride film is completely oriented parallel to the direction of orientation of the substrate and has a relatively high degree of anisotropy with respect to its electrical conductivity and optical properties.
Inventors
- 👤 Anthony Frank Garito
- 👤 Alan J. Heeger
- 👤 Alan G. MacDiarmid
- 👤 Arthur A. Bright
- 👤 Marshall J. Cohen
- 👤 Chester M. Mikulski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:24
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00865; G; G02; G02B; G02B1/00; G02B1/10; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31786; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
64 words
A composite polymeric material having metallic surface properties comprising a highly-oriented thermoplastic polymeric substrate and an epitaxial crystalline film of polymeric sulfur nitride formed on the surface of said substrate, said polymeric sulfur nitride film being completely oriented parallel to the direction of orientation of said substrate and having a relatively high degree of anisotropy with respect to its electrical conductivity and optical properties.
Claim 2
Dependent Claim
64 words
A composite polymeric material having metallic surface properties comprising a highly-oriented thermoplastic polymeric substrate and an epitaxial crystalline film of polymeric sulfur nitride formed on the surface of said substrate, said polymeric sulfur nitride film being completely oriented parallel to the direction of orientation of said substrate and having a relatively high degree of anisotropy with respect to its electrical conductivity and optical properties.
Claim 3
Dependent Claim
55 words
The composite polymeric material of claim 1, wherein the optical anisotropy of said polymeric sulfur nitride film is such that the color of said film over the substantial entirety of its surface appears golden under light polarized parallel to said direction of orientation and dark blue-gray under light polarized perpendicular to said direction of orientation.
Claim 4
Dependent Claim
43 words
The composite polymeric material of claim 1, wherein the electrical conductivity anisotropy of said polymeric sulfur nitride film is within the range of from about 10 to about 17 over a temperature range of from close to 0° K. to about room temperature.
Claim 5
Dependent Claim
22 words
The composite polymeric material of claim 1, wherein said substrate is selected from the group consisting of polyolefins, fluorocarbon polymers and polyesters.
Claim 6
Dependent Claim
12 words
The composite polymeric material of claim 4, wherein said substrate is polyethylene.
Claim 7
Dependent Claim
12 words
The composite polymeric material of claim 4, wherein said substrate is polytetrafluoroethylene.
Claim 8
Dependent Claim
13 words
The composite polymeric material of claim 4, wherein said substrate is polyethylene terephthalate.
Claim 9
Dependent Claim
13 words
The composite polymeric material of claim 4, wherein said substrate is polyvinylidene fluoride.
Claim 10
Dependent Claim
26 words
The composite polymeric material of claim 1, wherein the thickness of said polymeric sulfur nitride film is within the range of about 5,000 to 10,000 angstroms.
Claim 11
Independent Claim
96 words
A method of preparing a composite polymeric material having metallic surface properties comprising the steps of heating solid crystalline polymeric sulfur nitride to a temperature above its sublimation point to produce a vapor of said polymeric sulfur nitride, and thereafter condensing said polymeric sulfur nitride vapor onto the surface of a highly-oriented thermoplastic polymeric substrate to thereby form on said substrate an epitaxial crystalline polymeric sulfur nitride film completely oriented parallel to the direction of orientation of said substrate and having a relatively high degree of anisotropy with respect to its electrical conductivity and optical properties.
Claim 12
Independent Claim
96 words
A method of preparing a composite polymeric material having metallic surface properties comprising the steps of heating solid crystalline polymeric sulfur nitride to a temperature above its sublimation point to produce a vapor of said polymeric sulfur nitride, and thereafter condensing said polymeric sulfur nitride vapor onto the surface of a highly-oriented thermoplastic polymeric substrate to thereby form on said substrate an epitaxial crystalline polymeric sulfur nitride film completely oriented parallel to the direction of orientation of said substrate and having a relatively high degree of anisotropy with respect to its electrical conductivity and optical properties.
Claim 13
Dependent Claim
33 words
The method of claim 10, wherein the sublimation of said polymeric sulfur nitride is carried out in vacuo at a temperature within the range of from about 140° C. to about 150° C.
Claim 14
Dependent Claim
21 words
The method of claim 11, wherein the surface of said substrate is maintained at a temperature of not above 50° C.
Claim 15
Dependent Claim
45 words
The method of claim 12, wherein the sublimation and condensation procedure is carried out for a period of from about 12 to about 18 hours whereby said polymeric sulfur nitride film is grown to a thickness within the range of about 5,000 to 10,000 angstroms.
Claim 16
Dependent Claim
33 words
The method of claim 13, wherein the distance between the surface of the solid polymeric sulfur nitride being sublimed and the surface of said substrate is maintained at at least about 15 cm.
Claim 17
Dependent Claim
20 words
The method of claim 10, wherein said substrate is selected from the group consisting of polyolefins, fluorocarbon polymers and polyesters.
Claim 18
Dependent Claim
10 words
The method of claim 15, wherein said substrate is polyethylene.
Claim 19
Dependent Claim
10 words
The method of claim 15, wherein said substrate is polytetrafluoroethylene.
Claim 20
Dependent Claim
11 words
The method of claim 15, wherein said substrate is polyethylene terephthalate.
Claim 21
Dependent Claim
11 words
The method of claim 15, wherein said substrate is polyvinylidene fluoride.
References Cited (Backward Citations)
No citation records indexed.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
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