A polymerizable composition for a lens with a high refractive index comprising at least one polythiol compound represented general formula (1):
R—(SH
2
SH)
n
(1)
where R is an organic residue except an aromatic group and n is an integer of at least 1, having at least two intramolecular mercapto groups and at least one compound having an intramolecular functional group which can react with a mercapto group; a resin prepared by polymerizing the composition; an optical element and a lens made of the resin; and a process for preparing a thiol compound comprising the steps of reacting a compound represented by general formula (2):
HS—R
1
(—S—R
2
)
m
(2)
where m is an integer of at least 1; R
1
represents an aromatic, aliphatic, alicyclic or heterocyclic organic residue or aliphatic, alicyclic or heterocyclic organic residue with an aromatic ring or a sulfur atom in its chain; and R
2
represents a protective group, with a compound having a functional group which can react with a mercapto group, and then converting —S—R
2
into —SH.
一种用于高折射率镜片的可聚合组合物,包含至少一种代表通式(1)的聚
硫醇化合物:
R-(SH
2
SH)
n
(1)
其中 R 是除芳香基团之外的有机残基,n 是至少 1 的整数,具有至少两个分子内巯基和至少一种具有可与巯基反应的分子内官能团的化合物;通过聚合该组合物制备的
树脂;用该
树脂制成的光学元件和透镜;以及制备
硫醇化合物的工艺,包括以下步骤:使通式(2)所代表的化合物发生反应:
HS-R
1
(-S-R
2
)
m
(2)
其中,m 是至少为 1 的整数;R
1
代表芳香族、脂肪族、脂环族或杂环族有机残留物,或其链中带有一个芳香环或一个
硫原子的脂环族、脂环族或杂环族有机残留物;以及 R
2
代表保护基团,具有可与巯基反应的官能团的化合物,然后将-S-R
2
转化为-SH。