US4517238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making integral molded silicone products with different phases and the molded products prepared therefrom
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1983-03-21
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Granted: 1985-05-14
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Expires: 2003-03-21
Abstract
Abstract Integral silicone molded products comprising a unitary structure of a substrate with different phases is made by coating a substrate with a mixture of an alkenyl containing polyorganosiloxane, a polyorganohydrogensiloxane, and an addition-reaction catalyst where at least one component is applied to the substrate and then additional components are applied and diffuse to result in a coating with a polyorganosiloxane phase whose degree of crosslinking is low and a polyorganosiloxane phase whose degree of crosslinking is high and the phase having the low degree of crosslinking is next to the substrate. Such molded products are coated hybrid IC transistors, solar battery modules, and optical fibers.
Inventors
- 👤 Katsutoshi Mine
- 👤 Toshio Suzuki
- 👤 Tsuneo Hanada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08J3/245; C08L; C08L83/00; C08L83/04; C09; C09D; C09D183/00; C09D183/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20; C08G77/70; C08J2383/00; C08J2383/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/31504; Y10T428/31536; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
195 words
A method for producing an integral silicone molded product comprising a unitary structure with different phases comprising coating a substrate with an addition-reaction curable polyorganosiloxane consisting essentially of (i) a polyorganosiloxane having at least two silicon-bonded alkenyl radicals per molecule where said alkenyl radicals have two to three carbon atoms per radical, (ii) a polyorganohydrogensiloxane having at least two silicon-bonded hydrogen atoms per molecule where the sum of the number of alkenyl radicals per molecule in component (i) and the number of silicon-bonded hydrogen atoms per molecule in component (ii) is at least 5, and (iii) an addition-reaction catalyst, where at least one of components (i), (ii), and (iii) is applied onto the substrate and a composition which necessarily contains the remainder of component (i), (ii), and (iii) but does not simultaneously contain all of components (i), (ii), and (iii) is then applied and diffuses with the result that the addition-reaction curable polyorganosiloxane composition coating is composed of a polyorganosiloxane phase whose degree of crosslinking is relatively low and a polyorganosiloxane phase whose degree of crosslinking is relatively high and the phase whose degree of crosslinking is relatively low is formed next to the substrate.
Claim 2
Independent Claim
195 words
A method for producing an integral silicone molded product comprising a unitary structure with different phases comprising coating a substrate with an addition-reaction curable polyorganosiloxane consisting essentially of (i) a polyorganosiloxane having at least two silicon-bonded alkenyl radicals per molecule where said alkenyl radicals have two to three carbon atoms per radical, (ii) a polyorganohydrogensiloxane having at least two silicon-bonded hydrogen atoms per molecule where the sum of the number of alkenyl radicals per molecule in component (i) and the number of silicon-bonded hydrogen atoms per molecule in component (ii) is at least 5, and (iii) an addition-reaction catalyst, where at least one of components (i), (ii), and (iii) is applied onto the substrate and a composition which necessarily contains the remainder of component (i), (ii), and (iii) but does not simultaneously contain all of components (i), (ii), and (iii) is then applied and diffuses with the result that the addition-reaction curable polyorganosiloxane composition coating is composed of a polyorganosiloxane phase whose degree of crosslinking is relatively low and a polyorganosiloxane phase whose degree of crosslinking is relatively high and the phase whose degree of crosslinking is relatively low is formed next to the substrate.
Claim 3
Dependent Claim
33 words
The method in accordance with claim 1 in which the substrate is coated with components (i) or (ii) and then with a mixture of component (iii) with remaining component (i) or component (ii).
Claim 4
Dependent Claim
31 words
The method in accordance with claim 1 in which the substrate is coated with a composition containing two of components (i), (ii), and (iii) and then with the individual remaining component.
Claim 5
Dependent Claim
34 words
The method in accordance with claim 1 in which the substrate is coated with a composition of all of components (i), (ii), and (iii) and then with one of components (i), (ii), and (iii).
Claim 6
Dependent Claim
37 words
The method in accordance with claim 4 in which the substrate is coated with a composition of components (i), (ii), and (iii) which is cured by heating, then coated with (ii), and thereafter subjected to further heating.
Claim 7
Dependent Claim
60 words
The method in accordance with claim 5 in which the composition is a mixture of dimethylvinylsiloxy terminated polydimethylsiloxane, trimethylsiloxy terminated polymethylhydrogensiloxane, a platinum catalyst, and a platinum catalyst addition-reaction retardant, the composition after being coated on the substrate is heated thereby curing the composition, and then the resulting cured composition is coated with trimethylsiloxy terminated polymethylhydrogensiloxane and then heated again.
Claim 8
Dependent Claim
67 words
The method in accordance with claim 5 in which the composition is a mixture of polyorganosiloxane having units of methylvinylsiloxane, phenylsilsesquioxane, methylsilsesquioxane, dimethylsiloxane, and trimethylsiloxy, trimethylsiloxy terminated polymethylhydrogensiloxane, a platinum catalyst, and a platinum catalyst addition-reaction retardant, the composition after being coated on the substrate is heated thereby curing the composition, and then the resulting cured composition is coated with trimethylsiloxy terminated polymethylhydrogensiloxane and then heated again.
Claim 9
Dependent Claim
58 words
The method in accordance with claim 5 in which the composition is a mixture of dimethylvinylsiloxy terminated polydimethylsiloxane, trimethylsiloxy terminated polymethyldrogensiloxane, a platinum catalyst, and a platinum catalyst addition-reaction retardant, the composition after being coated on the substrate is heated thereby curing the composition, and then the resulting cured composition is coated with 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane, and then heated again.
Claim 10
Dependent Claim
9 words
A product obtained by the method of claim 1.
Claim 11
Dependent Claim
36 words
A product obtained by the method of claim 1 in which the phase whose degree of crosslinking is relatively low is a liquid and the phase whose degree of crosslinking is relatively high is a gel.
Claim 12
Dependent Claim
36 words
A product obtained by the method of claim 1 in which the phase whose degree of crosslinking is relatively low is a liquid and the phase whose degree of crosslinking is relatively high is an elastomer.
Claim 13
Dependent Claim
36 words
A product obtained by the method of claim 1 in which the phase whose degree of crosslinking is relatively low is a gel and the phase whose degree of crosslinking is relatively high is an elastomer.
Claim 14
Dependent Claim
36 words
A product obtained by the method of claim 1 in which the phase whose degree of crosslinking is relatively low is a gel and the phase whose degree of crosslinking is relatively high is a resin.
Claim 15
Dependent Claim
36 words
A product obtained by the method of claim 1 in which the phase whose degree of crosslinking is relatively low is an elastomer and the phase whose degree of crosslinking is relatively high is a resin.
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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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |