Acryl-based copolymer composition, method of preparing the same, and acryl-based copolymer blend comprising the same

Patent metadata

Field	Value
Publication number	US-11879028-B2
Application number	US-202017271972-A
Country	US
Kind code	B2
Filing date	Sep 1, 2020
Priority date	Oct 8, 2019
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

An acryl-based copolymer composition is provided. The acryl-based copolymer composition includes an acryl-based copolymer, an aggregation inducing agent, and an aggregating agent, wherein the acryl-based copolymer includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinkable monomer-derived repeating unit. The aggregation inducing agent includes a siloxane-based monomer-derived repeating unit and an ether-based monomer-derived repeating unit, and the aggregating agent includes a monovalent ionic metal salt.

First claim

The invention claimed is:

1. An acryl-based copolymer composition, comprising:
an acryl-based copolymer;
an aggregation inducing agent; and
an aggregating agent;
wherein the acryl-based copolymer includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinkable monomer-derived repeating unit,
wherein the aggregation inducing agent includes a siloxane-based monomer-derived repeating unit and an ether-based monomer-derived repeating unit,
wherein the aggregating agent includes a monovalent ionic metal salt, and
wherein the aggregation inducing agent includes a siloxane-based copolymer represented by Formula 1:

wherein
z is an integer from 5 to 50,
t is an integer from 1 to 10,
q is an integer from 5 to 50,
p is an integer from 5 to 50, and
R is hydrogen or an alkyl group having 1 to 10 carbon atoms.

2. The acryl-based copolymer composition of claim 1 , wherein the siloxane-based monomer includes dimethyl siloxane.

3. The acryl-based copolymer composition of claim 1 , wherein the ether-based monomer is a combination of ethylene oxide and propylene oxide.

4. The acryl-based copolymer composition of claim 1 , wherein the aggregation inducing agent has a weight average molecular weight of 1,000 g/mol to 200,000 g/mol.

5. The acryl-based copolymer composition of claim 1 , wherein the siloxane-based copolymer represented by Formula 1 is included in an amount of 0.1 parts by weight to 10 parts by weight based on 100 parts by weight of a total acryl-based copolymer.

6. The acryl-based copolymer composition of claim 1 , wherein the aggregating agent is a salt containing at least one metal selected from the group consisting of lithium, sodium, and potassium.

7. The acryl-based copolymer composition of claim 1 , wherein the aggregating agent is included in an amount of 3 parts by weight to 30 parts by weight based on 100 parts by weight of a total acryl-based copolymer.

8. The acryl-based copolymer composition of claim 1 , wherein the acryl-based copolymer includes 65 wt % to 93 wt % of the (meth)acrylic acid alkyl ester monomer-derived repeating unit, 5 wt % to 34.9 wt % of the (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and 0.1 wt % to 20 wt % of the crosslinkable monomer-derived repeating unit.

9. A method of preparing an acryl-based copolymer composition, comprising:
preparing an acryl-based copolymer by polymerizing a monomer mixture including a (meth)acrylic acid alkyl ester monomer, a (meth)acrylic acid alkoxy alkyl ester monomer, and a crosslinkable monomer; and
adding an aggregation inducing agent and an aggregating agent to the acryl-based copolymer,
wherein the aggregating agent includes a monovalent ionic metal salt, and
wherein the aggregation inducing agent includes a siloxane-based copolymer represented by Formula 1:

wherein
z is an integer from 5 to 50,
t is an integer from 1 to 10,
q is an integer from 5 to 50,
p is an integer from 5 to 50, and
R is hydrogen or an alkyl group having 1 to 10 carbon atoms.

10. An acryl-based copolymer blend comprising the acryl-based copolymer composition of claim 1 and a filler.

11. The acryl-based copolymer blend of claim 10 , wherein the filler is one or more selected from the group consisting of carbon black, silica, kaolin clay, talc, and diatomaceous earth.

12. The acryl-based copolymer blend of claim 10 , wherein the filler is included in an amount of 20 parts by weight to 80 parts by weight based on 100 parts by weight of the acryl-based copolymer composition.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Ji Young
• Jung Yong Seok
• Han Jung Su
• Shin Sang Jin

Classifications

• C08F220/1802 Primary

  C2-(meth)acrylate, e.g. ethyl (meth)acrylate · CPC title

• C08F220/1804

  C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate · CPC title

• C08F220/283

  and containing one or more carboxylic moiety in the chain, e.g. acetoacetoxyethyl(meth)acrylate · CPC title

• C08F2/16

  Aqueous medium · CPC title

• C08G77/46

  containing polyether sequences · CPC title