Surface conditioner for coating agents

• US 8,497,335 B2
• Filed: 07/30/2010
• Issued: 07/30/2013
• Est. Priority Date: 07/31/2009
• Status: Active Grant

• Current Assignee: Kyoeisha Chemical Co., Ltd.
• Original Assignee: Kyoeisha Chemical Co., Ltd.
• Inventors: Miyake, Kazuhiro, Mitomi, Daisuke, Kinugawa, Masashi
• Primary Examiner(s): ZIMMER, MARC S
• Application Number:
  US13/387,056
• Publication Number:
  US 20120123045A1
• Time in Patent Office: 1,096 Days
• Field of Search: None
• US Class Current: 526/279
• CPC Class Codes: C08F 220/1804 C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
• CPC Class Codes: C08F 220/1808 C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
• CPC Class Codes: C08F 226/10 N-Vinyl-pyrrolidone
• CPC Class Codes: C08F 230/08 containing silicon
• CPC Class Codes: C09D 133/04 Homopolymers or copolymers of esters C09D143/04 takes precedence
• CPC Class Codes: C09D 7/47 Levelling agents
• CPC Class Codes: C09D 7/65 macromolecular C09D7/41-C09D7/48 take precedence

Abstract

A surface conditioner for a coating agent is provided. The surface conditioner for the coating agent comprises: a copolymer composed of 1 to 40 parts by weight of an acrylate monomer (A) having a siloxy group, 2 to 80 parts by weight of an N-vinyllactam monomer (B), and 10 to 97 parts by weight of an alkyl(meth)acrylate monomer (C) of which an alkyl group has 1 to 12 carbon atoms; and weight average molecular weight of the copolymer is 1000 to 120000. It is another object of the present invention to provide a coating agent to which said surface conditioner is blended.

Claims

1. A surface conditioner for a coating agent comprising:

a copolymer comprising

an acrylate monomer (A) having a siloxy group,

an N-vinyllactam monomer (B), and

an alkyl(meth)acrylate monomer (C) of which an alkyl group has 1 to 12 carbon atoms;

wherein

a ratio by weight of the monomer (A);

the monomer (B);

the monomer (C);

is 1-40;

2-80;

10-97,

weight average molecular weight of the copolymer is 1000 to 120000, and

the copolymer has a rising temperature ranging from 280 to 400°

, and the rising temperature is obtained by thermo-gravimetric analysis and identified by the temperature when a weight of a sample of the copolymer is reduced during heat up beyond 10% through decomposition or sublimation thereof.

2. The surface conditioner for the coating agent according to claim 1, wherein the acrylate monomer (A) having the siloxy group is at least one member selected from the group consisting of:

at most 40 parts by weight of a mono(meth)acrylate with (meth)acrylic modification at one terminal, which is represented by the following chemical formula (I)

4. A base material-wetting agent comprising;

the surface conditioner for the coating agent according to claim 1.

5. A leveling agent comprising;

the surface conditioner for the coating agent according to claim 1.

6. A coating agent comprising;

the surface conditioner for the coating agent according to claim 1, and coating ingredients.

7. A coating layer comprising;

the coating agent according to claim 6, wherein the coating agent is applied and then dried or cured.

3. A surface conditioner for a coating agent comprising

an acrylate monomer (A) having a siloxy group,

an N-vinyllactam monomer (B),

an alkyl (meth)acrylate monomer (C) of which an alkyl group has 1 to 12 carbon atoms, and

a (meth)acrylate monomer (D) with lactone-modification;

wherein

a ratio by weight of the monomer (A) ;

the monomer (B) ;

the monomer (C) is 1-40;

2-80;

10-97,

weight average molecular weight of the copolymer is 1000 to 120000,

a ratio by weight of the monomers (A) to (C) and the monomer (D) is 100;

1 to 100;

90,

and the monomer (D) is a reaction product of

an acrylic monomer containing a hydroxyl group and a lactone compound represented by β

-propiolactone,

dimethylpropiolactone, butyllactone, γ

-valerolactone, γ

-caprylolactone, γ

-laurylolactone, ε

-caprolactone or δ

-caprolactone.

8. The surface conditioner for the coating agent according to claim 3, wherein the acrylate monomer (A) having the siloxy group is at least one member selected from the group consisting of:

at most 40 parts by weight of a mono(meth)acrylate with (meth)acrylic modification at one terminal, which is represented by the following chemical formula (I)

9. A base material-wetting agent comprising:

the surface conditioner for the coating agent according to claim 3.

10. A leveling agent comprising:

the surface conditioner for the coating agent according to claim 3.

11. A coating agent comprising:

the surface conditioner for the coating agent according to claim 3, and coating ingredients.

12. A coating layer comprising:

the coating agent according to claim 11, wherein the coating agent is applied and then dried or cured.