A radiation-curable composition containing (A) hydrolyzates of hydrolyzable silane compounds represented by general formula (1): (R
1
)
p
(R
2
)
q
Si(X)
4-p-q
(wherein R
1
is a non-hydrolyzable organic group having 1 to 12 carbon atoms that contains fluorine atoms, R
2
is a non-hydrolyzable organic group having 1 to 12 carbon atoms (but excluding ones that contain fluorine atoms), X is a hydrolyzable group, p is an integer of 1 or 2, and q is an integer of 0 or 1) and condensates of such hydrolyzates, and (B) a photo acid generator, wherein the ratio of silanol (Si—OH) groups in the composition is 0.1 to 0.5 out of all the bonding groups on Si. With such a composition, the waveguide loss is low for light having a wavelength in a broad range from the visible region to the near infrared region, and moreover the cracking resistance, the patterning ability upon irradiation with radiation, and so on are excellent.
一种辐射固化组合物,含有(A)通式(1)代表的可
水解
硅烷化合物的
水解物:(R
1
)
p
(R
2
)
q
Si(X)
4-p-q
(其中 R
1
是具有 1 至 12 个碳原子且含有
氟原子的不可
水解的有机基团,R
2
是具有 1 至 12 个碳原子的不可
水解有机基团(但不包括含有
氟原子的有机基团),X 是可
水解基团,p 是 1 或 2 的整数,q 是 0 或 1 的整数)以及此类
水解物的缩合物,以及 (B) 光酸发生器,其中组合物中
硅醇(Si-OH)基团在
硅上所有键合基团中的比例为 0.1 至 0.5。使用这样的组合物,对于波长范围从可见光区到近红外区的光而言,波导损耗较低,而且抗裂性、用辐射照射时的图案化能力等都非常出色。