| US 7,553,879 B2 | ||
| Coating composition curable with ultraviolet radiation | ||
| Thomas J Laginess, Temperance, Mich. (US); Hans Kempf, Swanton, Ohio (US); and Jennifer R Stewart, Dearborn, Mich. (US) | ||
| Assigned to BASF Corporation, Southfield, Mich. (US) | ||
| Filed on Feb. 21, 2008, as Appl. No. 12/35,148. | ||
| Application 12/035148 is a continuation of application No. 10/686870, filed on Oct. 15, 2003, abandoned. | ||
| Claims priority of provisional application 60/477413, filed on Jun. 10, 2003. | ||
| Prior Publication US 2008/0138531 A1, Jun. 12, 2008 | ||
| Int. Cl. C08J 3/28 (2006.01); C09D 4/02 (2006.01); C09D 133/14 (2006.01) | ||
| U.S. Cl. 522—2 [522/64; 522/75; 522/83; 522/173; 522/44] | 19 Claims |
| 1. A UV radiation curable primer coating composition comprising:
(a) one or more compounds containing one ethylenically unsaturated free-radically polymerizable group per molecule;
(b) 5 to 50% by weight of compounds containing two or more ethylenically unsaturated free radically polymerizable groups per
molecule comprising a difunctional urethane acrylate and a hexafunctional urethane acrylate;
(c) 1.0 to 60% by weight of one or more pigments, fillers and/or dyes;
(d) 0.1 to 0.95 % photoinitiators;
(e) 0 to 20% by weight of volatile organic solvent; and
(f) 0.1 to 10% by weight of additives,
wherein said coating composition is curable to a non-tacky surface under a UVA radiation emitting lamp within 2 minutes and
in sunlight within 5 minutes.
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