Silicone-based coating composition and silicone-based release film comprising the same

Patent metadata

Field	Value
Publication number	US-10208229-B2
Application number	US-201515513471-A
Country	US
Kind code	B2
Filing date	Sep 17, 2015
Priority date	Sep 29, 2014
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

Provided is a silicone-based coating composition including: a silicone-based resin; a silicone-based hardener; and a thermal initiator, in which the silicone-based coating composition further includes a silicone-based compound of Chemical Formula 1. Also, provided is a silicone-based release film including: a base layer; and a coating layer which is a cured product of the silicone-based coating composition.

First claim

The invention claimed is:

1. A silicone-based coating composition comprising:
a silicone-based resin;
a silicone-based hardener; and
a thermal initiator,
wherein the silicone-based coating composition further comprises a silicone-based compound of the following Chemical Formula 1:

(m is an integer from 1 to 1,000).

2. The silicone-based coating composition of claim 1 , wherein the silicone-based coating composition comprises the silicone-based compound in an amount of 1 part by weight to 20 parts by weight based on 100 parts by weight of the silicone-based resin.

3. The silicone-based coating composition of claim 1 , wherein the silicone-based resin is polydimethylsiloxane (PDMS).

4. The silicone-based coating composition of claim 1 , wherein the silicone-based hardener is hydrogen silane.

5. The silicone-based coating composition of claim 1 , wherein the silicone-based coating composition comprises the silicone-based hardener in an amount of 0.5 part by weight to 5 parts by weight based on 100 parts by weight of the silicone-based resin.

6. The silicone-based coating composition of claim 1 , wherein the thermal initiator is the following Chemical Formula 2:

(R is CH 3 ).

7. The silicone-based coating composition of claim 1 , wherein a concentration of a total solid content of the silicone-based coating composition is 0.5 wt % to 10 wt %.

8. A silicone-based release film comprising:
a base layer; and
a coating layer which is a cured product of the silicone-based coating composition comprising claim 1 .

9. The silicone-based release film of claim 8 , wherein the coating layer has a contact angle of 90° to 120° when measured by dropping ultrapure water and diiodomethane on the release film.

10. The silicone-based release film of claim 8 , wherein the coating layer has a surface energy of 15 mN/m to 35 mN/m.

11. The silicone-based release film of claim 8 , wherein the coating layer has a thickness of 50 nm to 200 nm.

12. The silicone-based release film of claim 8 , wherein the base layer has a thickness of 20 μm to 150 μm.

13. The silicone-based release film of claim 8 , wherein the base layer comprises one selected from the group consisting of a polyethylene resin, a polyethylene terephthalate resin, polyether ether ketone, paper, and a combination thereof.

Assignees

• Lg Chemical Ltd

Inventors

• Park Jun-Hyoung
• Kim Jang-Soon

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C09D5/20

  for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films · CPC title

• C09D7/63

  organic · CPC title

• C08G77/12

  containing silicon bound to hydrogen · CPC title

• C08J2483/04

  Polysiloxanes · CPC title