US4231910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer composition
Assignee: Dow Silicones Corp
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Filing: 1979-02-08
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Granted: 1980-11-04
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Expires: 1999-02-08
Abstract
Abstract A primer composition consisting essentially of 75 to 99 percent alkoxymethyltriazine and 1 to 25 percent 3-glycidoxypropyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)-ethyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 2-mercaptoethyltrimethoxysilane or a partial hydrolyzate of the silanes is employed to improve wet and dry adhesion of thermoplastics to solid substrates.
Inventors
- 👤 Edwin P. Plueddemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C09; C09D; C09D161/00; C09D161/20; C09D161/32; C09D5/00; C09D5/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A primer composition for application to a solid substrate to provide improved adhesion with thermoplastics, the composition consisting essentially of (A) 1 to 25 weight percent of an organosilicon compound selected from a group consisting of (1) 3-glycidoxypropyltrimethoxysilane, (2) 3-mercaptopropyltrimethoxysilane, (3) 2-mercaptoethyltrimethoxysilane, (4) 2-(3,4-epoxycyclohexyl)-ethyltrimethoxysilane and (5) partial hydrolyzates of (1), (2), (3) or (4) and (B) 75 to 99 weight percent of an alkoxymethyltriazine which is a product of etherification of a methyloltriazine with a monohydric alcohol having 4 carbons or less.
Claim 2
Dependent Claim
82 words
A primer composition for application to a solid substrate to provide improved adhesion with thermoplastics, the composition consisting essentially of (A) 1 to 25 weight percent of an organosilicon compound selected from a group consisting of (1) 3-glycidoxypropyltrimethoxysilane, (2) 3-mercaptopropyltrimethoxysilane, (3) 2-mercaptoethyltrimethoxysilane, (4) 2-(3,4-epoxycyclohexyl)-ethyltrimethoxysilane and (5) partial hydrolyzates of (1), (2), (3) or (4) and (B) 75 to 99 weight percent of an alkoxymethyltriazine which is a product of etherification of a methyloltriazine with a monohydric alcohol having 4 carbons or less.
Claim 3
Dependent Claim
14 words
A primer composition in accordance with claim 1 wherein the organosilicon compound is 3-glycidoxypropyltrimethoxysilane.
Claim 4
Dependent Claim
14 words
A primer composition in accordance with claim 1 wherein the alkoxymethyltriazine is highly etherified.
Claim 5
Dependent Claim
13 words
A primer composition in accordance with claim 3 wherein the alkoxymethyltriazine is hexamethoxymethylmelamine.
Claim 6
Dependent Claim
17 words
A primer composition in accordance with claim 1 which is diluted with alcohol or aqueous alcohol solvent.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |