Radiation curable composition, optical waveguide and method for formation thereof
申请人:Takase Hideaki
公开号:US20060165362A1
公开(公告)日:2006-07-27
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。