US 11,912,610 B2
Coating composition having infrared reflective function, coating glass and method for preparation thereof, and cooking appliance using same
Taeho Kim, Seoul (KR); Dongwan Seo, Seoul (KR); Yongsoo Lee, Seoul (KR); Taehee Kim, Seoul (KR); Ju Hyeong Kim, Seoul (KR); Woon-Jin Chung, Chungcheongnam-do (KR); Hansol Lee, Chungcheongnam-do (KR); and In-Gun Kim, Chungcheongnam-do (KR)
Assigned to LG Electronics Inc., Seoul (KR); and KONGJU NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION, Chungcheongnam-do (KR)
Filed by LG Electronics Inc., Seoul (KR); and KONGJU NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION, Chungcheongnam-do (KR)
Filed on Jul. 31, 2020, as Appl. No. 16/945,343.
Claims priority of application No. 10-2019-0093512 (KR), filed on Jul. 31, 2019.
Prior Publication US 2021/0032158 A1, Feb. 4, 2021
Int. Cl. C03C 17/00 (2006.01); C03C 17/23 (2006.01); A47J 27/00 (2006.01); B82Y 30/00 (2011.01)
CPC C03C 17/23 (2013.01) [A47J 27/002 (2013.01); C03C 17/001 (2013.01); B82Y 30/00 (2013.01); C03C 2217/214 (2013.01); C03C 2217/216 (2013.01); C03C 2217/22 (2013.01); C03C 2217/228 (2013.01); C03C 2217/229 (2013.01); C03C 2217/23 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cooking appliance, comprising:
a cooking chamber;
a door configured to open and close the cooking chamber, the door comprising a door glass;
a coating layer disposed at least one surface of the door glass and made of a coating composition, the coating composition comprising a coating material and a heat conductive oxide nano powder that is 5 to 10 wt % with respect to a weight of the coating material,
wherein the coating material comprises:
20 to 40 wt % of phosphorus pentoxide (P2O5),
17 to 29.5 wt % of aluminum oxide (Al2O3),
0.5 to 3 wt % of zirconium dioxide (ZrO2),
10 to 30 wt % of sodium oxide (Na2O) and potassium oxide (K2O),
10 to 25 wt % of boron trioxide (B2O3), and
10 to 15 wt % of zinc oxide (ZnO).