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Curable fluorinated silsesquioxane compositions

A technology of silsesquioxane and fluorinated polysiloxane, which is applied in coatings and other directions, and can solve problems such as difficult matching of refractive index

Active Publication Date: 2022-02-15
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, index matching can become increasingly difficult as a wider range of materials are employed within optics

Method used

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  • Curable fluorinated silsesquioxane compositions
  • Curable fluorinated silsesquioxane compositions
  • Curable fluorinated silsesquioxane compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 2

[0103] Embodiment 2 is the curable composition of embodiment 1, wherein the curable composition further comprises a silanol-terminated fluorinated polysiloxane fluid.

Embodiment approach 3

[0104] Embodiment 3 is the curable composition of embodiment 2, wherein the silanol-terminated fluorinated polysiloxane fluid has the general formula of Formula III:

[0105]

[0106] Where: p is an integer of 1 or greater, such that the fluid has a viscosity of 50-250 centistokes.

Embodiment approach 4

[0107] Embodiment 4 is the curable composition of any one of embodiments 1-3, wherein R comprises -(CH 2 ) a CF 3 or -(CH 2 ) b (CF 2 ) c CF 3 wherein a is an integer of 1 to 6; b is an integer of 1 to 6; and c is an integer of 1 to 10.

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Abstract

The present invention discloses curable silsesquioxane compositions comprising a three-dimensional network of formula I, formula II, or a combination of formula I and formula II, wherein the oxygen atom at * bonded to another Si atom, R is a fluorinated organic group, R2 is an ethylenically unsaturated organic group, n+m is greater than 3, and -OH groups are present in an amount of at least 15% by weight of the network . The curable composition may also include a silanol terminated fluorinated polysiloxane fluid. The curable composition is a coatable composition that is solvent free and wets glass. The curable composition has a refractive index of 1.40 or less when cured.

Description

technical field [0001] The present disclosure relates to curable compositions comprising fluorinated silsesquioxane compounds. Background technique [0002] Optical devices are gradually becoming more complex and include more and more functional layers. When light passes through the layers of an optical device, the light can be altered by the layers in a wide variety of ways. For example, light can be reflected, refracted or absorbed. In many cases, layers included in optical devices for non-optical reasons adversely affect optical properties. For example, if a support layer that is not optically clear is included, light absorption by the support layer that is not optically clear can adversely affect the light transmittance of the overall device. [0003] A common challenge in multilayer optics is that when layers of different indices of refraction are adjacent to each other, light can be refracted at their interfaces. In some devices, this refraction of light is desired...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08
CPCC09D183/08C08G77/16C08G77/20C08G77/24C08L83/00C08K5/098C08K5/07C08K5/57C08G77/08C08G2150/00C08L83/08C08L2203/16C08L2205/025C08L2312/00
Inventor 克拉里·哈特曼-汤普森埃文·L·施瓦茨
Owner 3M INNOVATIVE PROPERTIES CO