US4173664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parylene stabilization
Assignee: Union Carbide Corp
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Filing: 1978-01-20
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Granted: 1979-11-06
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Expires: 1998-01-20
Abstract
Abstract A process for making an article comprising (a) a solid substrate and (b) a coating on said substrate, said coating comprising parylene admixed with a sterically hindered phenol, said process comprising diffusing the hindered phenol into the parylene by bringing the hindered phenol into contact therewith and providing sufficient heat to cause the diffusion, and the defined article in the case of those phenols, which are not vaporizable at a temperature of less than about 150 DEG C.
Inventors
- 👤 Gary S. Cieloszyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:47
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08K; C08K5/00; C08K5/04; C08K5/13; H; H10; H10W; H10W74/00; H10W74/40; H10W74/47; C08J2365/00; C08J2365/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
78 words
A process for making an article comprising (a) a solid substrate and (b) a coating on said substrate, said coating comprising parylene admixed with a sterically hindered phenol wherein the amount of hindered phenol is about 0.1 to about 15 percent by weight based on the weight of the parylene, said process comprising diffusing the hindered phenol into the parylene by bringing the hindered phenol into contact with the parylene and providing sufficient heat to cause the diffusion.
Claim 2
Dependent Claim
78 words
A process for making an article comprising (a) a solid substrate and (b) a coating on said substrate, said coating comprising parylene admixed with a sterically hindered phenol wherein the amount of hindered phenol is about 0.1 to about 15 percent by weight based on the weight of the parylene, said process comprising diffusing the hindered phenol into the parylene by bringing the hindered phenol into contact with the parylene and providing sufficient heat to cause the diffusion.
Claim 3
Dependent Claim
24 words
The process defined in claim 1 wherein the molecular weight of the hindered phenol is in the range of about 275 to about 1200.
Claim 4
Dependent Claim
14 words
The process defined in claim 2 wherein the parylene is poly-p-xylylene, poly-chloro-p-xylylene, or poly-dichloro-p-xylylene.
Claim 5
Dependent Claim
11 words
The process defined in claim 3 wherein the parylene is poly-chloro-p-xylylene.
Claim 6
Dependent Claim
26 words
The process defined in claim 1 wherein the solid substrate is first coated with parylene and then the coated substrate is contacted with the hindered phenol.
Claim 7
Dependent Claim
21 words
The process defined in claim 5 wherein the hindered phenol is admixed with a solvent prior to contact with the substrate.
Claim 8
Dependent Claim
17 words
The process defined in claim 5 wherein the solvent is evaporated after contact and prior to diffusion.
Claim 9
Dependent Claim
25 words
The process defined in claim 7 wherein the temperature of the diffusion step is in the range of about 100° C. to about 250° C.
Claim 10
Dependent Claim
24 words
The process defined in claim 8 wherein the molecular weight of the hindered phenol is in the range of about 275 to about 1200.
Claim 11
Dependent Claim
14 words
The process defined in claim 9 wherein the parylene is poly-p-xylylene, poly-chloro-p-xylylene, or poly-dichloro-p-xylylene.
Claim 12
Dependent Claim
11 words
The process defined in claim 10 wherein the parylene is poly-chloro-p-xylylene.
Claim 13
Dependent Claim
12 words
The process defined in claim 8 wherein the hindered phenol is ##STR9##
Claim 14
Dependent Claim
13 words
The process defined in claim 8 wherein the hindered phenol is thio bis(ethyl-3-(3'5'-di-tert-butyl-4'hydroxyphenyl)propionate).
Claim 15
Dependent Claim
23 words
The process defined in claim 1 wherein the solid substrate is first contacted with the hindered phenol and is then coated with parylene.
Claim 16
Dependent Claim
21 words
The process defined in claim 14 wherein the hindered phenol is admixed with a solvent prior to contact with the substrate.
Claim 17
Dependent Claim
19 words
The process defined in claim 15 wherein the solvent is evaporated after contact and prior to the coating step.
Claim 18
Dependent Claim
25 words
The process defined in claim 16 wherein the temperature of the diffusion step is in the range of about 100° C. to about 250° C.
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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |