US4525511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and compositions for improving bonding to painted surfaces
Assignee: Essex Specialty Products LLC
•
Filing: 1984-04-06
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Granted: 1985-06-25
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Expires: 2004-04-06
Abstract
Abstract A method for priming a high solids enamel automotive finish to improve the adhesion thereto of a sealant composition, which method comprises treating said surface with a strong acid, conveniently by applying a primer composition to said surface, said primer composition comprising a solution, in a volatile organic solvent, of a hydroxy functional film forming resin and at least 0.25 percent of a strong acid, by weight of said resin.
Inventors
- 👤 Michael D. Kirby
- 👤 Michael P. Mazzeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06; C09J; C09J127/00; C09J127/02; C09J127/04; C09J127/06; C08; C08L; C08L2666/00; C08L2666/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A primer composition adaptable to application to a painted surface to improve the adhesion of a sealant composition to said surface, said composition comprising a solution, in a volatile solvent, of an hydroxy functional film forming and at least 0.25 percent of a strong acid, by weight of said resin.
Claim 2
Dependent Claim
50 words
A primer composition adaptable to application to a painted surface to improve the adhesion of a sealant composition to said surface, said composition comprising a solution, in a volatile solvent, of an hydroxy functional film forming and at least 0.25 percent of a strong acid, by weight of said resin.
Claim 3
Dependent Claim
15 words
A composition as in claim 1 wherein said strong acid is an organic sulfonic acid.
Claim 4
Dependent Claim
13 words
A composition as in claim 1 wherein said acid is paratoluene sulfonic acid.
Claim 5
Dependent Claim
53 words
A composition as in claim 1 wherein said resin is a terpolymer comprising about 80 to about 90 percent by weight of vinyl chloride and about 4 to 5 percent by weight of vinyl acetate, the balance being hydrolyzed vinyl acetate to give an hydroxy content of at least 2 percent by weight.
Claim 6
Dependent Claim
60 words
A composition as in claim 1 which is a solution of (1) a terpolymer comprising about 80 percent by weight of vinyl chloride, about 4 percent by weight of vinyl acetate, the balance being hydrolyzed vinyl acetate, said terpolymer containing about 2.3 percent by weight of hydroxy groups, and (2) 1 percent of paratoluenesulfonic acid, by weight of said terpolymer.
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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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |