1. Allen, N.S. and Edge, M., UV and electron beam curable pre-polymers and diluent monomers: Classification, preparation and properties, In Radiation Curing in Polymer Science and Technology , Vol. I (J.P. Fouassier and J.F. Rabek, eds.). Elsevier Applied Science, London New York, 1993, Chapter 5, pp. 225 262.

2. Udding-Lourier, S., Baijards, R.A. and Feima, N. W., RadTech Europe 1999, Conference Proceedings. 1999, pp. 607 613.

3. Burget, D., Mallein, C., Mauguiere-Guyonnet, F., Fouassier, J.P., Varelas, C.G., Apostolatos, S., Charalam-bopoulou, G., Manea, M. and Lundmark, S., RadTech Europe 2003, Conference Proceedings, Vol. I. 2003, pp. 57 62.

4. According to US 4,072,592, Mobile Oil Corporation.

5. According to US 3,700,643, Union Carbide Corporation.

6. Stone, V.W., Burie, P., van den Bergen H. and van Holen, J., Novel routes to urethane acrylates, RadTech North America, UV&EB Technology, Charlotte, NC, May 2004, Technical Conference Proceedings. 2004, on CD.

7. WO 2004/050888 (BASF).

8. According to Oke, R. A. and Wragg, R. T., Chem. Ind. 597 (1970).

9. www.curedisease.com/Perspectives/vol_1_1989/Problems%20with%20the%20Draize.html.

10. Allen, N.S., Lo, C.K. and Salim, M.S., RadTech Europe 1989, Florence.

11. (a) Hult, A., Adv. Polym. Sci. 143, 1 34 (1999); (b) Frechet, J., J. Macromol. Sci., Pure Appl. Chem. 33, 1399 (1996).

12. (a) James, D., Hyperbranched polymers for hardcoat with superior performance, Proceedings, RadTech Asia 2005, Shanghai, China. 2005, p. 139 145; (b) James, D., European Coatings Conference, Parquet Coatings II, 14 15, November 2002, Berlin.

13. Hult, A., Malstroem, E. and Johansson, M., Polym. Mater. Sci. Eng. 72, 528 (1995).

14.