US3326710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of curing polyester compositions and coatings containing synergistic combination of photosensitizers and compositions thereof
Assignee: Sherwin Williams Co
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Filing: 1964-04-16
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Granted: 1967-06-20
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Mary G Brodie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF RAPIDLY CURING AN UNSATURATED POLYESTER RESIN WHICH COMPRISES THE STEPS OF MIXING WITH AN UNSATURATED POLYESTER RESIN FROM 0.5% TO 5% OF A PHOTOSENSITIZER CONSISTING OF A MIXTURE OF FROM 25% TO 75% OF 1-CHLOROMETHYL NAPHTHALENE AND FROM 75% TO 25% OF 2-NAPHTHALENE SULFONYL CHLORIDE AND IRRADIATING SAID POLYESTER RESIN-PHOTOSENSITIZER MIXTURE WITH LIGHT RADIATION FROM A LIGHT SOURCE EMITTING A SUBSTANTIAL PROPORTION OF ITS TOTAL LIGHT ENERGY OUTPUT IN THE 2900 TO 4000 ANGSTROM WAVELENGTH RANGE UNTIL THE POLYESTER RESIN BECOMES CURED.
Claim 2
Independent Claim
85 words
A METHOD OF RAPIDLY CURING AN UNSATURATED POLYESTER RESIN WHICH COMPRISES THE STEPS OF MIXING WITH AN UNSATURATED POLYESTER RESIN FROM 0.5% TO 5% OF A PHOTOSENSITIZER CONSISTING OF A MIXTURE OF FROM 25% TO 75% OF 1-CHLOROMETHYL NAPHTHALENE AND FROM 75% TO 25% OF 2-NAPHTHALENE SULFONYL CHLORIDE AND IRRADIATING SAID POLYESTER RESIN-PHOTOSENSITIZER MIXTURE WITH LIGHT RADIATION FROM A LIGHT SOURCE EMITTING A SUBSTANTIAL PROPORTION OF ITS TOTAL LIGHT ENERGY OUTPUT IN THE 2900 TO 4000 ANGSTROM WAVELENGTH RANGE UNTIL THE POLYESTER RESIN BECOMES CURED.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |