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Antifouling Hard Coats and Antifouling Hard Coat Precursors

A hard coating and nanoparticle technology, applied in coatings, nanotechnology, etc., can solve the problems of deterioration of antifouling properties of hard coatings, and achieve the effects of increased durability, excellent scratch resistance and impact resistance

Active Publication Date: 2017-11-17
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The antifouling properties of hardcoats tend to deteriorate as the surface of the hardcoat wears away

Method used

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  • Antifouling Hard Coats and Antifouling Hard Coat Precursors
  • Antifouling Hard Coats and Antifouling Hard Coat Precursors
  • Antifouling Hard Coats and Antifouling Hard Coat Precursors

Examples

Experimental program
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Effect test

Embodiment 1

[0079] Example 1 is a hard coat layer comprising a mixture of nanoparticles and a binder; the nanoparticles constitute 40% to 95% by mass of the entire mass of the hard coat layer; 10% to 50% by mass of the nanoparticles have The average particle size in the range; 50% to 90% by mass of nanoparticles has an average particle size in the range of 60nm to 400nm; the average particle size of nanoparticles with an average particle size in the range of 60nm to 400nm The ratio of the average particle size of the nanoparticles within the average particle size ranges from 2:1 to 200:1; the particle size distribution of the nanoparticles is bimodal or multimodal; the binder comprises a multifunctional fluorinated (methyl ) acrylic compounds, their reaction products, or combinations thereof; wherein the multifunctional fluorinated (meth)acrylic compound comprises cyclic siloxane units.

Embodiment 2

[0080] Embodiment 2 is the hard coat of embodiment 1, wherein the nanoparticles are surface-modified nanoparticles.

Embodiment 3

[0081] Embodiment 3 is the hard coat layer of embodiment 1 or embodiment 2, wherein the multifunctional fluorinated (meth)acrylic compound is a perfluoroether compound having two or more (meth)acrylic acid groups.

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Abstract

The hard coat layer comprises a mixture of nanoparticles and a binder, the nanoparticles constituting 40% to 95% by mass of the entire mass of the hard coat layer; 10% to 50% by mass of the nanoparticles having 50% to 90% by mass of the nanoparticles have an average particle size in the range of 60nm to 400nm; the average particle size of the nanoparticles with an average particle size in the range of 60nm to 400nm is the same as that of nanoparticles having an average particle size in the range of 2nm to 200nm The ratio of the average particle size of the nanoparticles in the range of average particle size is in the range of 2:1 to 200:1; and the binder comprises a multifunctional fluorinated (meth)acrylic compound, their reaction product, or a combination thereof . The multifunctional fluorinated (meth)acrylic compound contains cyclic siloxane units. The size distribution of the nanoparticles is bimodal or multimodal.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority from Japanese Patent Application JP 2012-170999 filed on Aug. 1, 2012, the disclosure of which is incorporated by reference in its entirety. technical field [0003] The present disclosure relates to antifouling hardcoats and antifouling hardcoat precursors. Background technique [0004] Hard coatings are used to protect the surfaces of various hard and flexible materials. The hard coat layer is required to have excellent scratch resistance, impact resistance, etc., and optical characteristics in the case of transparent materials. Furthermore, there is a strong need for antifouling properties for hardcoated surfaces. [0005] Contains SiO modified with a photocurable silane coupling agent 2 Nanoparticle hardcoat materials are described in US Pat. Nos. 5,104,929 and 7,074,463. [0006] Hardcoat materials with antifouling properties and easy-to-clean surfaces obtained by curin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/00C09D7/65
CPCC09D4/00C09D5/00C09D133/16C09D7/65C09D7/69C08F230/08C08F222/1067C08F222/1065C09D5/1687C09D7/61C09D7/67C09D7/68B82Y40/00
Inventor 上田纱织杉山直大高松赖信
Owner 3M INNOVATIVE PROPERTIES CO
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