US3889023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone elastomers bonded to solid substrates
Assignee: Dow Silicones Corp
•
Filing: 1973-10-04
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Granted: 1975-06-10
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Expires: 1993-10-04
Abstract
Abstract Composite articles in which silicone rubber is bonded to a solid substrate exhibit improved rubber adhesion when small amounts of diallylphthalate are added to the silicone rubber prior to curing the rubber while in contact with the substrate.
Inventors
- 👤 Edwin P Plueddemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08J2383/00; C08J2383/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
A COMPOSITE ARTICLE COMPRISING A SOLID SUBSTRATE HAVING BONDED THERETO A CURED SILICONE RUBBER COMPOSITION COMPRISING (A) 100 PARTS BY WEIGHT OF A MXTURE CONSISTING ESSENTIALLY OF AN ORGANOPOLYSILOXANE GUM OF THE UNIT FORMULA RNSIO(4-N)/2 IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, VINYL, PHENYL AND 3,3,3-TRIFLUOROPROPYL RADICALS AND N HAS AN AVERAGE VALUE OF FROM 1.98 TO 2.01 INCLUSIVE, A REINFORCING SILICA AND AN ORGANOPEROXIDE VULCANIZING AGENT; AND (B) FROM ABOUT 2 TO 10 PARTS BY WEIGHT OF DIALLYLPHTHALATE.
Claim 2
Dependent Claim
83 words
A COMPOSITE ARTICLE COMPRISING A SOLID SUBSTRATE HAVING BONDED THERETO A CURED SILICONE RUBBER COMPOSITION COMPRISING (A) 100 PARTS BY WEIGHT OF A MXTURE CONSISTING ESSENTIALLY OF AN ORGANOPOLYSILOXANE GUM OF THE UNIT FORMULA RNSIO(4-N)/2 IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, VINYL, PHENYL AND 3,3,3-TRIFLUOROPROPYL RADICALS AND N HAS AN AVERAGE VALUE OF FROM 1.98 TO 2.01 INCLUSIVE, A REINFORCING SILICA AND AN ORGANOPEROXIDE VULCANIZING AGENT; AND (B) FROM ABOUT 2 TO 10 PARTS BY WEIGHT OF DIALLYLPHTHALATE.
Claim 3
Dependent Claim
47 words
A composite article in accordance with claim 1 wherein said cured rubber composition includes from 0.25 to 2.5 parts by weight of R''(OR'''')3 in which R'' is a vinyl or alkyl radical and R'''' is a lower alkyl radical containing from 1 to 4 inclusive carbon atoms.
Claim 4
Dependent Claim
13 words
A composite article in accordance with claim 1 wherein the substrate is metal.
Claim 5
Dependent Claim
13 words
A composite article in accordance with claim 1 wherein the substrate is glass.
Claim 6
Dependent Claim
16 words
A composite article in accordance with claim 1 wherein the substrate is a synthetic polymeric material.
References Cited (Backward Citations)
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US2968840A
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US2938007A
Cited
US3305504A
Cited
US3730932A
Cited
US3772066A
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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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |