US3979547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint for use on rubbers
Assignee: Bridgestone Firestone Inc
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Filing: 1975-03-20
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Granted: 1976-09-07
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Expires: 1995-03-20
Abstract
Abstract When polyurethane paint compositions are applied to natural or synthetic rubbers, as the paint composition dries and cures, the paint may "orange-peel," i.e. it wrinkles or beads without separating from the rubber. It has been found that by adding a small amount of a rubber to such a paint, such orange-peeling is prevented.
Inventors
- 👤 Durward Thomas Roberts, Jr.
- 👤 Frederick Carl Weissert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:27
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C09; C09D; C09D175/00; C09D175/04; C08J2321/00; C08J2475/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31826; Y10T428/31855
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
In a cured rubber surface to which is adhered a solid coating of a polyurethane prepolymer derived from a polyol and an isocyanate, which prepolymer is cured with an amine curing agent and contains an adhesion promoter, the improvement in which in the coating, there is 3 to 10 parts of a polystyrene-polybutadiene-polystyrene block copolymer to prevent the coating from orange-peeling.
Claim 2
Dependent Claim
61 words
In a cured rubber surface to which is adhered a solid coating of a polyurethane prepolymer derived from a polyol and an isocyanate, which prepolymer is cured with an amine curing agent and contains an adhesion promoter, the improvement in which in the coating, there is 3 to 10 parts of a polystyrene-polybutadiene-polystyrene block copolymer to prevent the coating from orange-peeling.
Claim 3
Dependent Claim
16 words
The coated rubber of claim 1 in which the polyurethane is derived from a butadiene diol.
Claim 4
Dependent Claim
16 words
The coated rubber of claim 1 in which the polyurethane is derived from a polytetrahydrofuran diol.
Claim 5
Dependent Claim
16 words
The coated rubber of claim 1 in which the polyurethane is derived from a polypropylene glycol.
Claim 6
Dependent Claim
16 words
The coated rubber of claim 1 in which the polyurethane is prepared from a polyester diol.
Claim 7
Dependent Claim
22 words
The coated rubber of claim 1 in which the polyurethane is derived from a hydrogenated polybutadiene or a hydrogenated butadiene-styrene copolymer urethane.
Claim 8
Dependent Claim
21 words
The coated rubber of claim 1 in which the rubber surface is the surface of the sidewall of a pneumatic tire.
References Cited (Backward Citations)
US3361698A
Cited
US3428609A
Cited
US3427366A
Cited
US3562355A
Cited
US3663469A
Cited
US3808077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |