| 摘要 |
A PROCESS FOR PREPARING ACRYLATE-FUNCTIONAL ORGANOPOLYSILOXANE-URETHANE COPOLYMERS A process for preparing radiation polymerizable acrylate-functional organopolysiloxane-urethane copolymers by reacting aminofunctional polysiloxanes having at least one unit of the formula where R is a divalent radical selected from the group consisting of a saturated divalent hydrocarbon radical having up to 20 carbon atoms, a divalent hydrocarbonoxy radical in which the oxygen atom is in the form of an ether linkage and an unsaturated divalent hydrocarbon radical having from 2 to 20 carbon atoms, R1 is a monovalent hydrocarbon radical having from 1 to 20 carbon atoms, R2 is a radical selected from the group consisting of a monovalent hydrocarbon radical having from 1 to 20 carbon atoms and a radical of the formula CH2CH2X, where X is selected from the group consisting of COOR3, CONR3, CN and SO2R3, R3 is a monovalent hydrocarbon radical having from 1 to 20 carbon atoms, a is 0, 1 or 2, b is 1, 2, or 3, c is 1, 2, 3 or 4 and d is 0, 1, 2 or 3, with the proviso that c equals b-d+1, with acrylated urethane oligomers in the presence of a solvent. |
