US3671483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer composition for adhering silicone elastomer to substrates
Assignee: Dow Silicones Corp
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Filing: 1970-12-30
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Granted: 1972-06-20
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Expires: 1990-12-30
Abstract
Abstract A mixture of tetraalkoxysilane or partial hydrolyzate thereof, a tetraalkyltitanate, a compound of the formula CF3CH2CH2Si(OSi(CH3)2X)3 where X is a hydrogen atom or CH2CH2Si(OOCCH3)3 and at least one X is a -CH2CH2Si(OOCCH3)3 and an organic solvent is useful as a primer in adhering silicone elastomer to substrates such as epoxy resins and polyurethane. An example of the primer is one part each of ethylpolysilicate, tetrabutyltitanate and CF3CH2CH2Si(OSi(CH3)2CH2CH2Si(OOCCH3)3)3 and 10 parts of acetone.
Inventors
- 👤 Donald G Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:27
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0876; C07F7/0878; C07F7/0879; C09; C09D; C09D4/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
The composition in accordance with claim 1 in which the titanate is tetraalkyltitanate and is present in an amount of 1 to 2 inclusive parts by weight, the organosilicon compound is present in an amount of from 1 to 3 inclusive parts by weight and the organic solvent is a ketone and is present in an amount of from 5 to 15 inclusive parts by weight.
Claim 2
Dependent Claim
20 words
The composition in accordance with claim 1 in which the alkoxy silicon compound is polyethylsilicate and the titanate is tetrabutyltitanate.
Claim 3
Dependent Claim
20 words
The composition in accordance with claim 2 in which the alkoxy silicon compound is polyethylsilicate and the tetraalkyltitanate is tetrabutyltitanate.
Claim 4
Dependent Claim
21 words
The composition in accordance with claim 4 in which the ketone is selected from the group consisting of acetone and methylisobutylketone.
Claim 5
Dependent Claim
38 words
The composition in accordance with claim 5 in which the ketone is present in 10 parts by weight, the organosilicon compound is present in one part by weight and the tetrabutyltitanate is present in 1 part by weight.
Claim 6
Dependent Claim
20 words
The composition in accordance with claim 1 in which the titanate is bis(acetylacetonyl)diisopropyltitanate and the alkoxy silicon compound is polyethylsilicate.
Claim 7
Dependent Claim
15 words
The composition in accordance with claim 7 in which the organic solvent is a hydrocarbon.
Claim 8
Dependent Claim
15 words
The composition in accordance with claim 7 in which the organic solvent is a ketone.
Claim 9
Dependent Claim
21 words
The composition in accordance with claim 1 in which the titanate is a tetraalkyltitanate and the organic solvent is a ketone.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |