| 摘要 |
A composition capable of providing, upon hydrolyzing and curing, a protective coating for substrates such as, for example, a plastic substrate having a vacuum metallized or vacuum sputtered surface comprises the reaction product of: (a) an isocyanurate polyisocyanate having the following formula: <IMAGE> wherein R4 is a substituted or unsubstituted aliphatic or cycloaliphatic group having from 1 to 12 carbon atoms or an aryl group and (b) an amino disilane having the formula: <IMAGE> wherein R is a lower alkyl having 1 to about 6 carbon atoms; R1 is a lower alkyl having 1 to about 4 carbon atoms; R2 and R3, which may be the same or different, are each substituted or unsubstituted alkylene radicals having 2 to 18 carbon atoms or arylene radicals having 6 to 18 carbon atoms; and a is an integer having values of 0 to 2, the protective coating adhering particularly well to such surfaces and having especially superior resistance to ultraviolet light, humidity, air and heat. |
