| 摘要 |
(I) Polyphotoinitiators comprising the hydrosilation prod. of: (a) a host polymer having olefinic or acetylenic unsatd. and (b) at least one organosilicon hydride grafting agent having formula: (hv)-R8-R5-H (hv)=a photoinitiating aromatic-aliphatic ketone gp.; R5=(i) or (ii) R6 (same or different)= organo or halo gp. and n=an integer; and R8=alkylene, alkylene, alkylenoxy or oxy. (II) Polyphotoinitiators comprising a polymeric backbone having pendant organosilicon photoinitiating gps. of structure: (hv)-R8-R5- attached through intermediate alkylene or alkenylene gps.
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