Coating composition

Patent metadata

Field	Value
Publication number	US-10072155-B2
Application number	US-201414780720-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Mar 29, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A coating composition capable of forming an acrylic hard coat film contains (A) an acrylate component and (B) a metal oxide, wherein a mass ratio (B)/(A) of (B) the metal oxide to (A) the acrylate component is from 0.1 to 1.5, (A) the acrylate component comprises components (a-1), (a-2) and (a-3), and a content ratio X of the component (a-1), a content ratio Y of the component (a-2) and a content ratio Z of the component (a-3) satisfies the following conditions (1) and (2). Condition (1): in (A) the acrylate component, X is from 40 to 60% by mass, and a total of Y and Z is from 60 to 40% by mass, and condition (2): in the total of Y and Z, Z is 0% by mass or more and less than 100% by mass.

First claim

The invention claimed is:

1. A spectacle lens comprising a hard coat film that is formed with a coating composition comprising (A) an acrylate component and (B) a metal oxide, wherein
a mass ratio (B)/(A) of (B) the metal oxide to (A) the acrylate component is from 0.1 to 1.5, (A) the acrylate component comprises the following components (a-1), (a-2) and (a-3):
(a-1): a polyfunctional acrylate compound having 3 or more acrylate groups in one molecule;
(a-2): a dendritic aliphatic compound having an acrylate group at an end thereof; and
(a-3): at least one acrylate compound represent by the following formula (I):

where
R 1 , R 2 and R 3 each independently represent an alkylene group having from 1 to 6 carbon atoms,
R 4 and R 5 each independently represent a hydrogen atom or a methyl group, and
Q represents a hydrogen atom or a (meth)acryloyl group, provided that the component (a-3) contains at least one kind of the compound, wherein Q represents a hydrogen atom;

X represents a content ratio of the component (a-1), Y represents a content ratio of the component (a-2), and Z represents a content ratio of the component (a-3);
the content of X is from 40 to 60% by mass, and the total content of Y and Z is from 60 to 40% by mass, based on 100% by mass of (A); and
the content of Z is 20 to 90% by mass, based on the total content of Y and Z.

2. The spectacle lens according to claim 1 , wherein the coating composition contains a polyfunctional acrylate compound having 3 or more acrylate groups in one molecule and having a hydroxyl group as the component (a-1).

3. The spectacle lens according to claim 1 , wherein
the content of Z is 50 to 90% by mass, based on the total content of Y and Z.

4. The spectacle lens according to claim 1 , wherein (B) the metal oxide is silicon oxide.

5. The spectacle lens according to claim 1 , wherein the spectacle lens further comprises an antireflection film composed of an inorganic material that is adhered to the hard coat film.

Assignees

• Hoya Corp

Inventors

• Hamakubo Katsushi
• Ito Kae

Classifications

• C08K3/22

  of metals · CPC title

• C08K2003/2244

  of zirconium · CPC title

• G02B1/111

  using layers comprising organic materials · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C09D4/00 Primary

  Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16} · CPC title