| 摘要 |
A protective coating material comprising (meth)acrylate derivatives of the following formulas +E,crc/1/ , +E,crc/2/ , +E,crc/3/ , +E,crc/4/ and +E,crc/5/ within the following ranges of a, b, c, d and e % by weight, respectively: 5</=a</=80, 0</=b</=30, 0</=c</=30, 5</=d</=50, 0</=e</=50, provided that a+b+c+d+e=100, <IMAGE> &cir& 1 wherein each of R1 to R3 is H or CH3, and R4 is CH2CH3 or CH2OH, <IMAGE> &cir& 2 wherein each of R5 to R8 is H or CH3, <IMAGE> &cir& 3 <IMAGE> wherein each of R9 to R14 is H or CH3, CH2=C(R15)COO(CH2)nOCOC(R16)=CH2+E,crc/4/ wherein each of R15 and R16 is H or CH3, and n is an integer of from 2 to 10. <IMAGE> &cir& 5 wherein R17 is H or CH3.
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