| abstract |
The invention relates to silicone-polyether linear block copolymers of the formulan n wherein, n R is hydrogen or a C (1-8) alkyl, alkoxyl or haloalkyl radical or a monovalent epoxy-functional organic radical; n R¹ is hydrogen or a C (1-8) alkyl or alkoxyl radical, or a monovalent epoxy-functional organic radical; n provided that at least two R or R¹ groups are either hydrogen or monovalent epoxy-functional organic radicals; n R² is a divalent alkylene radical; n R³ is a C (2-6) alkyl or alkoxyl radical; n n is a positive integer of about 4 to about 400; n m is a whole number of from 0 to about 50; and, each of R, R¹, R² and R³ may be unsubstituted or substituted. The invention also relates to UV-curable compositions comprising the above-described compound, with or without a UV-detectable dye marker, and a process for making such a compound. |