| abstract |
The invention relates to the use of surface-active photoinitiators of formula I (see formula I), the units being arranged randomly or in blocks, and wherein n is a number from 1 to 1000; m is a number from 0 to 100; p is a number from 0 to 10 000; x is the number 1, or, when n is 1, x may also be the number 2; A1 and A2 are, for example, C1-C18,alkyl; or A1 and A2 together are a single bond; R1, R2 and R3 are, for example, each independently of the others C1-C18alkyl, phenyl or C5-C8cycloalkyl; R4 is, for example, unsubstituted or substituted C1-C18alkyl, unsubstituted or substituted phenyl or C5-C8cycloalkyl; IN, when x is 1, is a radical of formula (see formula II); or IN, when x is 2 is a radical of formula (see formula 3); R13 and R14 are, for example, each independently of the other C1-C12alkyl; Y is, for example, -(CH2)a-O-; X is OR15 or N(R16)(R17); R15 is, for example, hydrogen or C1-C4alkyl; R16 and R17, are, for example, hydrogen or C1-C12alkyl; X, has, for example, one of the meanings of X; and R18 is, for example, -(CH2)a-; in photochemically and combined photochemically and thermally crosslinkable formulations. |