NEW SURFACE-ACTIVE POLYSILOXANE PHOTOINITIATORS Russian patent published in 2009 - IPC C08G77/04 C08F2/48 G03F7/75 C09D183/04 

FIELD: chemistry.

SUBSTANCE: present invention refers to new surface-active polysolioxane photoinitiators. There are disclosed polymer photoinitiator of formula I, method of production by reaction of methyl ether of phenylglyoxal acid and silicon compound with end group OH- of formula I'. Additionally, there are disclosed photocurable composition containing (A) at least one ethylene-unsaturated free radical photopolymerised compound; and (B) at least one surface-active photoinitiator of formula I specified above; (C) thermally cross-linked compounds optionally; (D) other additives optionally; (C) other photoinitiators optionally. Besides, there is disclosed method for making coatings with scratch-resistant and/or chemically resistant surfaces wherein which photocurable composition specified above covers a substrate. There is also described application of componds of formula I as surface-active photoinitiators for photopolymerising ethylene-unsaturated compounds or mixtures. There is described coated substrate, containing at least on one surface covered with photocurable composition specified above.

EFFECT: making certain siloxane compound ensuring improved full curing and scratch resistance of coatings.

7 cl, 2 tbl, 5 ex