US3998985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving adhesion of vinyl polymers to glass
Assignee: OI Glass Inc
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Filing: 1975-03-03
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Granted: 1976-12-21
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Expires: 1995-03-03
Abstract
Abstract An exceptional increase in adhesion between vinyl polymers and glass is obtained when the polymer is mixed with a primer plus an aminosilane containing more than one amino group and applied to a glass surface in combination as a single coating rather than separately. Excellent adhesive bonding results by this method even after exposure of the bonded surface to aqueous solutions containing 4% by weight of alkali for 30 minutes at 65 DEG C.
Inventors
- 👤 Walter Kitaj
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:37
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C17/328; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10688; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A method of improving the adhesion of a vinyl plastisol to a glass surface which comprises applying thereto as a single coating a combination consisting essentially of said plastisol, a polyaminosilane and a primer consisting of 8.4 parts by weight of an epichlorohydrin-bisphenol A resin, 1.6 parts by weight of N-aminoethyl-gamma-aminopropyltrimethoxysilane and 45 parts by weight each of ethyleneglycolmonomethyl ether and ethyleneglycolmonoethylether acetate and thereafter curing said coating.
Claim 2
Independent Claim
68 words
A method of improving the adhesion of a vinyl plastisol to a glass surface which comprises applying thereto as a single coating a combination consisting essentially of said plastisol, a polyaminosilane and a primer consisting of 8.4 parts by weight of an epichlorohydrin-bisphenol A resin, 1.6 parts by weight of N-aminoethyl-gamma-aminopropyltrimethoxysilane and 45 parts by weight each of ethyleneglycolmonomethyl ether and ethyleneglycolmonoethylether acetate and thereafter curing said coating.
Claim 3
Dependent Claim
48 words
A method as in claim 1 in which the combination employed is prepared prior to application by admixing 78 to 89% by weight of vinyl plastisol, 1 to 2% by weight of polyaminosilane and 10 to 20% by weight of primer and wherein said polyaminosilane is N-aminoethyl-gamma-amino propyltrimethoxysilane.
Claim 4
Dependent Claim
39 words
A method as in claim 1 in which the polyaminosilane has the formula ##STR3## in which each R is the same loweralkoxy radical containing from 1 to 4 carbon atoms and n is an integer from 1 to 30.
Claim 5
Dependent Claim
13 words
A method as in claim 3 in which the polyaminosilane is N-aminoethyl-gamma-amino propyltrimethoxysilane.
Claim 6
Dependent Claim
16 words
A method as in claim 1 in which the vinyl plastisol is a polyvinyl chloride plastisol.
Claim 7
Dependent Claim
17 words
A method as in claim 1 in which the vinyl plastisol is a polyvinyl chloride-polyvinyl acetate plastisol.
Claim 8
Dependent Claim
17 words
A method as in claim 1 in which the cured coating is 4 to 10 mils thick.
References Cited (Backward Citations)
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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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |