Nanoparticle-containing solution and use thereof

Patent metadata

Field	Value
Publication number	US-10377903-B2
Application number	US-201515126799-A
Country	US
Kind code	B2
Filing date	Jun 23, 2015
Priority date	Jun 30, 2014
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

A nanoparticle-containing solution comprising nanoparticles of a metal oxide, and a solution obtained by dissolving, in an organic solvent, a phosphoric acid ester and a reactive group-containing carbonyl compound as hydrophobic treatment agents, the phosphoric acid ester having an alkylene oxide chain, and an alkyl group or allyl group at an end, and the reactive group-containing carbonyl compound having at least a vinyl group and a carboxyl group or cyclic ester group, and having a solubility parameter calculated by Fedors' method of 10.0 to 12.5.

First claim

What is claimed is:

1. Nanoparticle-containing resin particles comprising:
a resin, and
metal oxide nanoparticles dispersed within the resin,
the metal oxide nanoparticles being hydrophobized with a phosphoric acid ester and a reactive group-containing carbonyl compound, wherein:
the phosphoric acid ester is a compound represented by the following general formula (I):

where:
R 1 is an alkyl group having 8 to 13 carbon atoms or an allyl group,
R 2 is H or CH 3 ,
n is 1 to 30, and
the compound is a mixture in which a combination of a and b is a combination of 1 and 2 or 2 and 1; and
the reactive group-containing carbonyl compound is selected from:
a reactive group-containing carboxylic acid represented by the following general formula (II):
CH 2 ═CR 3 —Z—COOH  (II)

where:
R 3 is H or CH 3 , and
Z is a divalent hydrocarbon group of 5 or more carbon atoms optionally containing an ester group; and
a reactive group-containing cyclic ester represented by the following general formula (III):
CH 2 ═CR 3 —X-M  (III)

where:
R 3 is H or CH 3 ,
X is a divalent hydrocarbon group of 1 or more carbon atoms optionally containing an ester group, and
M is a lactone or a lactide.

2. A coating material, comprising the nanoparticle-containing resin particles according to claim 1 , a binder resin, and a solvent.

3. A light diffusing film obtained by drying the coating material according to claim 2 .

4. A molded article comprising the nanoparticle-containing resin particles according to claim 1 and a transparent resin.

5. The nanoparticle-containing resin particles of claim 1 , wherein:
the reactive group-containing carbonyl compound has a solubility parameter calculated by Fedors' method of 10.0 to 12.5.

6. The nanoparticle-containing resin particles according to claim 1 , wherein the reactive group-containing carbonyl compound is:
a reactive group-containing carboxylic acid represented by the following general formula (II)′:
CH 2 ═CR 3 COOC 2 H 4 O—C(═O)—O—C x H y —COOH  (II)′

where:
R 3 is H or CH 3 ,
x=2 to 6, and
y=any of x−2, 2x, and 2x−2, or
the reactive group-containing cyclic ester.

7. The nanoparticle-containing resin particles according to claim 5 , wherein the metal oxide is zirconium oxide.

8. The nanoparticle-containing resin particles according to claim 5 , wherein the phosphoric acid ester and the reactive group-containing carbonyl compound are contained in the nanoparticle-containing resin particles at a weight % ratio of 5:95 to 70:30.

Assignees

• Sekisui Plastics

Inventors

• Kubo Junko
• Motomura Takashi
• Sasahara Shuichi

Classifications

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• C01P2006/60

  Optical properties, e.g. expressed in CIELAB-values · CPC title

• C09D125/06

  Polystyrene · CPC title

• G02B5/0268

  characterized by the fabrication or manufacturing method · CPC title

• C09C1/0021 Primary

  comprising a core coated with only one layer having a high or low refractive index · CPC title