CPC C01G 25/006 (2013.01) [B32B 9/00 (2013.01); C07F 7/0836 (2013.01); C08G 79/00 (2013.01); C08K 3/22 (2013.01); C08L 85/00 (2013.01); G02B 1/11 (2013.01); G02B 5/28 (2013.01); H05B 33/22 (2013.01); H05B 33/28 (2013.01); H10K 50/00 (2023.02); A61K 51/0478 (2013.01)] | 17 Claims |
1. A polymetalloxane formed by polycondensation of a compound represented by general formula (2) or a hydrosylate thereof:
wherein
R4 is selected from all methyl or all ethyl,
R5 is selected from a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, when plural R4 and R5 exist, they may be the same or different,
M represents a metal atom selected from the group consisting of Ti, Zr and Sn,
m is an integer indicating a valence of a metal atom M, and
n is an integer of 1 to (m−1),
where the polymetalloxane consists of a constituent unit represented by the following general formula (1) as a repeating unit and having a weight average molecular weight of 10,000 or more:
wherein:
R1 is a hydroxy group, an alkoxy group having 1 to 4 carbon atoms or an (R33SiO—) group selected from the group consisting of a trimethylsiloxy group and a triethylsiloxy group,
R2 is selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a group having a metalloxane bond, and
wherein:
when plural R1, R2, and R3 exist, they may be the same or different,
M represents a metal atom selected from the group consisting of Ti, Zr and Sn,
m is an integer indicating a valence of the metal atom M,
a is an integer of 1 to (m−2), and
content of the (R33SiO—) group, represented by the ratio of the number of mols of Si atoms to the number of mols of M atoms of the polymetalloxane, is 10 mol % or more and 100 mol % or less.
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