Polymer, and oxygen absorbent and resin composition using same

Patent metadata

Field	Value
Publication number	US-11866528-B2
Application number	US-201917049391-A
Country	US
Kind code	B2
Filing date	Apr 12, 2019
Priority date	Apr 23, 2018
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A polymer comprising a structural unit derived from a compound (A) represented by formula (I):

wherein X, Y, R 1 , R 2 , R 7 , R 8 , R 3 , R 4 , R 5 , R 6 , J, and n are as defined in the description,
provides a resin composition that has an excellent curability and sufficiently polymerizes for curing even in the presence of oxygen in an air atmosphere to form a cured product having excellent appearance.

First claim

The invention claimed is:

1. A polymer comprising a structural unit derived from a compound (A) represented by formula (I):

wherein:
X and Y each independently represent a chalcogen atom;
R 1 , R 2 , R 7 , and R 8 each independently represent any one selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group;
R 3 , R 4 , R 5 , and R 6 each independently represent any one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group;
J represents a linking group comprising an aliphatic hydrocarbon having 3 to 15 carbon atoms which has at least one substituent selected from the group consisting of a hydroxy group, a (meth)acryloyloxy group, a 4-vinylphenoxy group, and an alkenyloxy group having 2 to 6 carbon atoms;
at least one selected from the at least one substituent is any one selected from the group consisting of a (meth)acryloyloxy group, a 4-vinylphenoxy group, and an alkenyloxy group having 2 to 6 carbon atoms;
a carbon atom in the linking group may be replaced by an oxygen atom; and
n represents an integer of 1 to 5;
provided that Ys, R 5 's, R 6 's, R 7 's, and R 8 's, if present, may represent different atoms or groups, respectively.

2. The polymer according to claim 1 , wherein X is an oxygen atom.

3. The polymer according to claim 1 , wherein R 3 and R 6 are hydrogen atoms.

4. The polymer according to claim 1 , wherein R 4 and R 5 are each independently a hydrogen atom or a methyl group.

5. The polymer according to claim 1 , wherein the compound (A) is a compound (A′) represented by formula (II):

wherein:
R 9 represents a hydrogen atom or a methyl group;
R 10 represents any one selected from the group consisting of a (meth)acryloyloxy group, a 4-vinylphenoxy group, and an alkenyloxy group having 2 to 6 carbon atoms; and
R 11 , R 12 , R 13 , and R 14 each independently represent any one selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group.

6. The polymer according to claim 5 , wherein R 9 is a hydrogen atom.

7. The polymer according to claim 5 , wherein R 10 is a (meth)acryloyloxy group.

8. The polymer according to claim 1 , wherein the polymer comprises a structural unit derived from a monomer (B) other than the compound (A).

9. The polymer according to claim 8 , wherein the monomer (B) is a monofunctional monomer (B1).

10. The polymer according to claim 9 , wherein the monofunctional monomer (B1) is an alkyl (meth)acrylate.

11. An oxygen absorbent comprising the polymer according to claim 1 .

12. The oxygen absorbent according to claim 11 , wherein the oxygen absorbent comprises a transition metal salt in an amount of 0.001 to 10 mol % based on an amount of the vinyl group in the polymer.

13. A resin composition comprising the oxygen absorbent according to claim 11 and a polyfunctional monomer and/or a resin.

14. The resin composition according to claim 13 , wherein the polyfunctional monomer is a polyvalent (meth)acrylic acid ester.

15. A cured product obtained by curing the resin composition according to claim 13 .

Assignees

• Kuraray Co

Inventors

• Noguchi Daiki
• Fukumoto Takashi
• Kubo Keiji

Classifications

• C08F20/28 Primary

  containing no aromatic rings in the alcohol moiety · CPC title

• B01J20/261

  obtained by reactions only involving carbon to carbon unsaturated bonds (macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds per se C08F) · CPC title

• B01J20/264

  derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers · CPC title

• B01J20/267

  Cross-linked polymers · CPC title

• B01J2220/46

  Materials comprising a mixture of inorganic and organic materials (materials coated or impregnated on a carrier B01J20/32) · CPC title