Process for preparing polymerized surface coatings using ultra-violet radiation
Abstract
Abstract A PROCESS FOR COATING AN ARTICLE WHEREIN THERE IS APPLIED TO THE SURFACE OF THE ARTICLE TO BE COATED A THIN FILM OF A POLYMERIZABLE ACRYLIC ESTER PREPARED BY THE COESTERIFICATION OF APOLYHYDRIC ALCOHOL HAVING AT LEAST 3 ESTERIFIABLE HYDROXYL GROUPS ON ADJACENT CARBON ATOMS WITH ACRYLIC ACID, AND A DICARBOXYLIC ACID SELECTED FROM A SATURATED ALIPHATIC DICARBOXYLIC ACID AND AN ALPHA-UNSATURATED, ALPHA,BETA-DICARBOXYLIC ACID, FROM 45% TO 95% OF THE HYDROXYL GROUPS OF THE ALCOHOL BEING ESTERFIED WITH THE ACRYLIC ACID, 5% TO 55% OF THE HYDROXYL GROUPS BEING ESTERIFIED WITH THE DICARBOXYLIC ACID, AND EXPOSING THE POLYMERICABLE FILM-CONTAINING SURFACE TO A SOURCE OF ULTRAVIOLET RADIATION FOR A TIME SUFFICIENT TO EFFECT POLYMERIZATION OF THE ACRYLIC ESTER FILM.
Inventors
- 👤 Chester W Fitko
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |