US3907656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for ultraviolet pigmented hardening of pigmented paint films
Assignee: SCM Corp
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Filing: 1974-05-24
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Granted: 1975-09-23
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Expires: 1994-05-24
Abstract
Abstract Cure of a paint film having a binder that is polymerizable by irradiation is improved by providing entrapped opacifying gas bubbles within the paint film. The opacifying entrapped gas bubbles can replace some of the opacifying pigment, such as titania, in addition to substantially improving the rate of ultraviolet energy cure.
Inventors
- 👤 Souza Antonio De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:32
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0407; C08F299/0421; C08F299/0428; C08F299/0435; C08K; C08K3/00; C08K3/18; C08K3/20; C08K7/00; C08K7/22; C09; C09D; C09D4/00; C09D5/00; B; B05; B05D; B05D3/00; B05D3/06; B05D3/061; B05D3/065; B05D3/067; Y; Y10; Y10S; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A PROCESS FOR ULTRAVIOLET CURING OF A PAINT FILM CONTAINING TITANIUM DIOXIDE PIGMENT AND AN ULTRAVIOLET SENSITIZER, AND HAVING AN ACRYLIC BINDER POLYMERIZABLE BY FREE RADICALINDUCED ADDITION POLYMERIZATION WHEN IRRADIATED WITH ULTRAVIOLET RADIATION, THE IMPROVEMENT WHICH COMPRRISES: PROVIDING BETWEEN ABOUT 25 TO 90% OF THE OPACIFICATION OF SAID PAINT FILM BY THE INCLUSION OF GRANULES TO ENTRAP PREFORMED OPACIFYING GAS BUBBLES WITHIN SAID PAINT FILM SAID PAINT FILM HAVING A PIGMENT-BINDER RATIO OF 0.8/1, AND IRRADIATING SAID PAINT FILM WITH ULTRAVIOLET ENERGY RADIATION UNTIL SAID PAINT FILM IS CURED TO A HARD PAINT FILM.
Claim 2
Dependent Claim
95 words
IN A PROCESS FOR ULTRAVIOLET CURING OF A PAINT FILM CONTAINING TITANIUM DIOXIDE PIGMENT AND AN ULTRAVIOLET SENSITIZER, AND HAVING AN ACRYLIC BINDER POLYMERIZABLE BY FREE RADICALINDUCED ADDITION POLYMERIZATION WHEN IRRADIATED WITH ULTRAVIOLET RADIATION, THE IMPROVEMENT WHICH COMPRRISES: PROVIDING BETWEEN ABOUT 25 TO 90% OF THE OPACIFICATION OF SAID PAINT FILM BY THE INCLUSION OF GRANULES TO ENTRAP PREFORMED OPACIFYING GAS BUBBLES WITHIN SAID PAINT FILM SAID PAINT FILM HAVING A PIGMENT-BINDER RATIO OF 0.8/1, AND IRRADIATING SAID PAINT FILM WITH ULTRAVIOLET ENERGY RADIATION UNTIL SAID PAINT FILM IS CURED TO A HARD PAINT FILM.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |