Sulfur-containing polymer, method for producing same, and sulfur-containing polymer composition
The present invention aims to provide a polymer material that has a high refractive index and can be suitably used for applications such as optical applications. The present invention relates to the sulfur-containing polymer containing at least one structural unit selected from the group consisting of a structural unit (A) represented by the following formula (1), a structural unit (B) represented by the following formula (2), and a structural unit (C) represented by the following formula (3); and a reactive functional group, wherein X 1 , X 2 , and X 3 are the same as or different from each other and are each an optionally substituted divalent aromatic hydrocarbon group.
1 . A sulfur-containing polymer comprising:
a structural unit (B) represented by the following formula (2);
and
a reactive functional group; and
optionally further comprising, a structural unit (A) represented by the following formula (1), or a structural unit (C) represented by the following formula (3), or a combination thereof:
wherein X 1 , X 2 , and X 3 are the same as or different from each other and are each a substituted or an unsubstituted divalent aromatic hydrocarbon group, and
a total content of the structural unit (B), the structural unit (A), and the structural unit (C) is 80 mol % or higher based on 100 mol % of all structural units of the sulfur-containing polymer.
2 . The sulfur-containing polymer according to claim 1 ,
wherein the sulfur-containing polymer comprises the structural unit (B) as a repeating unit.
3 . The sulfur-containing polymer according to claim 1 ,
wherein the reactive functional group is present in at least one of a main chain end or a side chain of the sulfur-containing polymer.
4 . The sulfur-containing polymer according to claim 1 ,
wherein the reactive functional group is at least one functional group selected from the group consisting of a carboxyl group, a phosphoric acid group, a phosphonic acid group, a hydroxy group, and a curable functional group, or a moiety comprising the at least one functional group.
5 . The sulfur-containing polymer according to claim 1 ,
wherein the substituent is selected from the group consisting of a reactive functional group, a halogen atom, an optionally substituted alkyl group, an optionally substituted alkoxy group, an optionally substituted aryl group, an optionally substituted aralkyl group, and an optionally substituted sulfur-containing substituent.
6 . The sulfur-containing polymer according to claim 1 ,
wherein a ratio of a content of an oxygen atom O attached to a sulfur atom S in a main chain of the sulfur-containing polymer to a content of the sulfur atom S in the main chain thereof (O/S) is in a range from 0.1 to 1.5.
7 . The sulfur-containing polymer according to claim 1
wherein the sulfur-containing polymer is present in an optical product.
8 . A sulfur-containing polymer composition comprising:
the sulfur-containing polymer according to claim 1 ; and
at least one material selected from the group consisting of an inorganic substance, a cross-linking agent, and an organic resin.
9 . A cured product of the sulfur-containing polymer according to claim 1 .
10 . A cured product of the sulfur-containing polymer composition according to claim 8 .
11 . A method for producing the sulfur-containing polymer according to claim 1 ,
the method comprising:
reacting a sulfur-containing aromatic polymer terminated with at least one group selected from the group consisting of a disulfide bond and a thiol group, with a compound having a polymerizable double bond and the reactive functional group.