Patent US4072645A successfully refreshed from Google Patents.
US4072645A
Expired / Lapsed
US
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Transparent pre-cure coating for rubbery polymers
Assignee: Goodyear Tire and Rubber Co
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Filing: 1976-07-19
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Granted: 1978-02-07
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Expires: 1996-07-19
Abstract
Abstract Light-colored unvulcanized polymers such as those used in the white sidewall areas of pneumatic vehicle tires are coated with a carbon black-free, pre-cure paint comprised of a polymer containing hydrated amorphous silica and a zinc activation system in a solubilizable form. The paint may have an aqueous or non-aqueous base; i.e., vehicle.
Inventors
- 👤 Richard J. Cogley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:44
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; C; C09; C09D; C09D109/00; C09D109/06; C09D109/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
33 words
A pre-cure paint comprising: a. a rubbery diene polymer, b. hydrated amorphous silica, c. a zinc salt or zinc complex which is soluble in the rubbery diene polymer, and d. a paint vehicle.
Claim 2
Dependent Claim
33 words
A pre-cure paint comprising: a. a rubbery diene polymer, b. hydrated amorphous silica, c. a zinc salt or zinc complex which is soluble in the rubbery diene polymer, and d. a paint vehicle.
Claim 3
Dependent Claim
25 words
The paint according to claim 1 wherein the zinc salt or zinc complex is formed in situ in the rubbery diene polymer from zinc oxide.
Claim 4
Dependent Claim
8 words
The paint of claim 1 wherein contains sulfur.
Claim 5
Dependent Claim
49 words
The paint of claim 3 wherein the zinc salt or complex is formed by a reaction between zinc oxide and a compound selected from the group consisting of ammonium sulfate, the tetrasodium salt of ethylene diamine tetra acetic acid, triethylene tetra amine, tetraethylene pentamine, sodium gluconate and sodium citrate.
Claim 6
Dependent Claim
15 words
The paint according to claim 4 wherein the zinc oxide is reacted with ammonium sulfate.
Claim 7
Dependent Claim
41 words
A process of preparing the unvulcanized rubbery surface of a product prior to vulcanization of the product, said surface containing light colored portions, comprising coating at least the light color portions of the surface with the precure paint of claim 1.
Claim 8
Dependent Claim
7 words
The unvulcanized coated product of claim 6.
Claim 9
Dependent Claim
11 words
A process comprising vulcanizing the coated unvulcanized product of claim 7.
Claim 10
Dependent Claim
6 words
The vulcanized product of claim 8.
Claim 11
Dependent Claim
18 words
The paint according to claim 1, wherein the polymer is in latex form and the vehicle is water.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |