| abstract |
A diffusion-agent composition including a borate ester (A); a polyhydric alcohol (B) represented by general formula (1); and an alkoxysilane compound (C). In general formula ( 1 ), k represents an integer from 0 to 3, m represents an integer of 1 or more, and R 2 and R 3 each independently represent a hydrogen atom, a hydroxyl group, a C 1-5 alkyl group, or a C 1-5 hydroxyalkyl group. When there are a plurality of R 2 s and R 3 s, the plurality of R 2 s and R 3 s may be the same as or different from one another. When k is 2 or more, the plurality of R 2 s and R 3 s always include at least one or more hydroxyl groups or C 1-5 hydroxyalkyl groups having 1 to 5 carbon atoms. R 4 and R 5 each independently represent a hydrogen atom or a C 1-3 alkyl group. |