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US 11,203,674 B2Granted
Transparent film
AssigneeSumitomo Chemical Company, Limited
InventorsYasuharu Shimazaki, Yoshihiro Harada, Ryu Takeko, Atsushi Hozumi, Chihiro Urata
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Abstract
The object of the present invention is to attain both water/oil repellency and hardness. The transparent film of the present invention comprises: a polysiloxane backbone; and a first hydrocarbon chain-containing group bonded to a part of silicon atoms forcing the polysiloxane backbone, wherein the thickness of the transparent film is not less than 6 nm and not more than 50 nm.
Claims6
A transparent film comprising:
- a polysiloxane backbone;
- and
- a first hydrocarbon chain-containing group bonded to a part of silicon atoms forming the polysiloxane backbone,
- wherein the first hydrocarbon chain-containing group comprises a chain structure including not less than 6 and not more than 20 carbon atoms,
- wherein the first hydrocarbon chain-containing group is composed of a hydrocarbon group,
- wherein the transparent film comprises a structure (A) represented by formula (1) below:
- wherein Ra represents the first hydrocarbon chain-containing group,
- wherein Za1 represents the first hydrocarbon chain-containing group, a second hydrocarbon chain-containing group or —O— group,
- wherein Ra and Za1 may be the same or different when Za1 is the first hydrocarbon chain-containing group, and
- wherein the transparent film comprises a structure (B) represented by formula (2) below:
- wherein Rb1 represents the second hydrocarbon chain-containing group, hydroxy group or —O— group,
- wherein Zb1 represents the second hydrocarbon chain-containing group, hydroxy group or —O— group,
- wherein Rb1 and Zb1 may be the same or different when each of Zb1 and Rb1 is the second hydrocarbon chain-containing group,
- wherein M represents Al, Fe, In, Ge, Hf, Si, Ti, Sn, Zr or Ta, and
- wherein n represents an integer of 0, 1 or 2 according to the kind of M,
- wherein the transparent film consists of a single embodiment of the structure (A) and a single embodiment of the structure (B),
- wherein an abundance ratio of the structure (B) to the structure (A) as structure (B)/structure (A) is not less than 8 and not more than 60 in terms of moles,
- wherein the thickness of the transparent film is not less than 6 nm and not more than 50 nm,
- wherein the transparent film has a pencil hardness of greater than or equal to 5H,
- wherein a contact angle hysteresis to water measured by a slide falling method as the dynamic water/oil repellency characteristic is not more than 5.1°.
17 more elements
A transparent film comprising:
- a polysiloxane backbone;
- and
- a first hydrocarbon chain-containing group bonded to a part of silicon atoms forming the polysiloxane backbone,
- wherein the first hydrocarbon chain-containing group comprises a chain structure including not less than 6 and not more than 20 carbon atoms,
- wherein the first hydrocarbon chain-containing group is composed of a hydrocarbon group,
- wherein the transparent film comprises a structure (A) represented by formula (1) below:
- wherein Ra represents the first hydrocarbon chain-containing group,
- wherein Za1 represents the first hydrocarbon chain-containing group, a second hydrocarbon chain-containing group or —O— group,
- wherein the second hydrocarbon chain-containing group is composed of a hydrocarbon group,
- wherein Ra and Za1 may be the same or different when Za1 is the first hydrocarbon chain-containing group, and
- wherein Ra and Za1 may be the same or different when the transparent film comprises a plural number of formulae (1),
- wherein the transparent film comprises a structure (B) represented by formula (2) below:
- wherein Rb1 represents the second hydrocarbon chain-containing group, hydroxy group or —O— group,
- wherein Zb1 represents the second hydrocarbon chain-containing group, hydroxy group or —O— group,
- wherein Rb1 and Zb1 may be the same or different when each of Zb1 and Rb1 is the second hydrocarbon chain-containing group,
- wherein Rb1 and Zb1 may be the same or different when the transparent film comprises a plural number of formulae (2),
- wherein M represents Al, Fe, In, Ge, Hf, Si, Ti, Sn, Zr or Ta, and
- wherein n represents an integer of 0, 1 or 2 according to the kind of M,
- wherein the transparent film consists of the structure (A) and the structure (B),
- wherein an abundance ratio of the structure (B) to the structure (A) as structure (B)/structure (A) is not less than 8 and not more than 60 in terms of moles,
- wherein the thickness of the transparent film is not less than 6 nm and not more than 50 nm,
- wherein the transparent film has a pencil hardness of greater than or equal to 5H,
- wherein a contact angle hysteresis to water measured by a slide falling method as the dynamic water/oil repellency characteristic is not more than 5.1°.
20 more elements
Dependencies are inferred from the claim text.