Dispersion composition, and curable composition, transparent film, microlens and solid-state imaging device using same, and polymer compound

Patent metadata

Field	Value
Publication number	US-9447270-B2
Application number	US-201514631465-A
Country	US
Kind code	B2
Filing date	Feb 25, 2015
Priority date	Aug 31, 2012
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

There is provided a dispersion composition containing (A) a metal oxide particle having a primary particle diameter of 1 nm to 100 nm, (B) a polymer compound represented by the specific formula having a weight average molecular weight of 5,000 to 8,000 and an acid value of 70 to 90 mgKOH/g, and (C) a solvent, and a curable composition containing the dispersion composition and (D) a polymerizable compound.

First claim

The invention claimed is:

1. A dispersion composition containing:
(A) a metal oxide particle having a primary particle diameter of 1 nm to 100 nm,
(B) a polymer compound represented by the following formula (5) having a weight average molecular weight of 5,000 to 8,000 and an acid value of 70 to 90 mgKOH/g, and
(C) a solvent:

in formula (5),
R 6 represents an (m+n1+n2)-valent linking group represented by any one of the following formulae (1) to (17),
each of R 7 to R 9 independently represents a single bond or a divalent linking group,
A 3 represents a monovalent substituent having at least one acid group with a pKa of less than 5,
A 4 represents a monovalent substituent different from A 3 and having at least one functional group with a pKa of 5 or more, the monovalent substituent being selected from the group consisting of a phenol group, an alkyl group not having a substituent, an alkyleneoxy chain-containing group, a carboxylate group, and a hydroxyl group,
n1 number of A 3 or R 7 may be the same or different from each other,
n2 number of A 4 or R 8 may be the same or different from each other,
m represents a positive number of 8 or less,
n1 represents from 1 to 8,
n2 represents from 1 to 8,
m+n1+n2 satisfies the range of 3 to 10,
P 3 represents a polymer chain, and m number of P 3 or R 9 may be the same or different from each other:

2. The dispersion composition as claimed in claim 1 ,
wherein the metal oxide particle (A) is a particle surface-treated with an organic compound.

3. The dispersion composition as claimed in claim 2 ,
wherein the organic compound is a fatty acid.

4. The dispersion composition as claimed in claim 1 ,
wherein the content of the metal oxide particle (A) is 65 mass % or more based on the total solid content of the dispersion composition.

5. The dispersion composition as claimed in claim 1 ,
wherein the polymer chain represented by P 3 is a polymer chain derived from at least one member selected from a polymer or copolymer of a vinyl monomer, an ester-based polymer, an ether-based polymer, a urethane-based polymer, an amide-based polymer, an epoxy-based polymer, a silicone-based polymer, and a modification product or copolymer thereof.

6. The dispersion composition as claimed in claim 1 ,
wherein the polymer chain represented by P 3 contains at least one repeating unit and the repetition number k of the at least one repeating unit is from 3 to 50.

7. A curable composition containing:
the dispersion composition claimed in claim 1 and (D) a polymerizable compound.

8. The curable composition as claimed in claim 7 ,
wherein the polymerizable compound (D) is at least one member selected from the group consisting of a compound having two or more epoxy groups or oxetanyl groups in the molecule and a compound having two or more terminal ethylenically unsaturated bonds.

9. The curable composition as claimed in claim 7 , further containing at least one member selected from the group consisting of (E) a polymerization initiator and a binder polymer.

10. The curable composition as claimed in claim 9 ,
wherein the polymerization initiator (E) is an oxime-based polymerization initiator.

11. The curable composition as claimed in claim 7 , which is used for the formation of a microlens or for the formation of an undercoat film of a color filter.

12. A transparent film formed using the curable composition claimed in claim 7 .

13. A microlens formed using a transparent film obtained from the curable composition claimed in claim 11 .

14. A solid-state imaging device having the microlens claimed in claim 13 .

15. A method for producing the dispersion composition claimed in claim 1 .

16. A polymer compound represented by the following formula (5):

in formula (5),
R 6 represents an (m+n1+n2)-valent linking group represented by any one of the following formulae (1) to (17),
each of R 7 to R 9 independently represents a single bond or a divalent linking group,
A 3 represents a monovalent substituent having at least one acid group with a pKa of less than 5,
A 4 represents a monovalent substituent different from A 3 and having at least one functional group with a pKa of 5 or more,wherein the monovalent substituent being selected from the group consisting of a phenol group, an alkyl group not having a substituent, and alkyleneoxy chain-containing group, a carboxylate group, and a hydroxyl group, n1 number of A 3 or R 7 may be the same or different from each other, n2 number of A 4 or R 8 may be the same or different from each other,
m represents a positive number of 8 or less,
n1 represents from 1 to 8,
n2 represents from 1 to 8,
m+n1+n2 satisfies the range of 3 to 10,
P 3 represents a polymer chain, and m number of P 3 or R 9 may be the same or different from each other:

17. A polymer compound represented by the following formula (5) having a weight average molecular weight of 5,000 to 8,000 and an acid value of 70 to 90 mgKOH/g:

in formula (5),
R 6 represents an (m+n1+n2)-valent linking group represented by any one of the following formulae (1) to (17),
each of R 7 to R 9 independently represents a single bond or a divalent linking group,
A 3 represents a monovalent substituent having at least one acid group,
A 4 represents a monovalent substituent different from A 3 , wherein the monovalent substituent being selected from the group consisting of a phenol group, an alkyl group not having a substituent, and alkyleneoxy chain-containing group, a carboxylate group, and a hydroxyl group, n1 number of A 3 or R 7 may be the same or different from each other, n2 number of A 4 or R 8 may be the same or different from each other,
m represents a positive number of 8 or less,
n1 represents from 1 to 8,
n2 represents from 1 to 8,
m+n1+n2 satisfies the range of 3 to 10, P 3 represents a polymer chain, and m number of P 3 or R 9 may be the same or different from each other:

18. The polymer compound as claimed in claim 17 ,
wherein the substituent A 3 is a monovalent substituent having at least one acid group with a pKa of less than 5, and
the substituent A 4 is a monovalent substituent having at least one functional group with a pKa of 5 or more.

19. The polymer compound as claimed in claim 16 ,
wherein the substituent A 3 is a monovale

Assignees

• Fujifilm Corp

Inventors

• Arayama Kyouhei
• Idei Hiroaki
• Kubota Makoto
• Takakuwa Hideki

Classifications

• C08K3/22

  of metals · CPC title

• C08G59/18

  Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups {; e.g. general methods of curing} · CPC title

• C08L33/02 Primary

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• G03F7/031

  Organic compounds not covered by group G03F7/029 · CPC title

• C09D4/00

  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