	US 11,807,922 B2
	Electrical steel sheet adhesive coating composition, electrical steel sheet product, and manufacturing method therefor
Jung-Woo Kim, Pohang-si (KR); Bongwoo Ha, Pohang-si (KR); Taeyoung No, Pohang-si (KR); and Won-Seog Bong, Pohang-si (KR)
Assigned to POSCO CO., LTD, Pohang-si (KR)
Appl. No. 16/473,047
Filed by POSCO, Pohang-si (KR)
PCT Filed Dec. 21, 2017, PCT No. PCT/KR2017/015202 § 371(c)(1), (2) Date Jun. 24, 2019, PCT Pub. No. WO2018/117670, PCT Pub. Date Jun. 28, 2018.
Claims priority of application No. 10-2016-0178484 (KR), filed on Dec. 23, 2016.
Prior Publication US 2020/0087760 A1, Mar. 19, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C22C 38/02 (2006.01); B05D 3/02 (2006.01); B05D 7/14 (2006.01); C08K 3/08 (2006.01); C08K 3/22 (2006.01); C09J 5/06 (2006.01); C09J 11/04 (2006.01); C09J 11/08 (2006.01)

CPC C22C 38/02 (2013.01) [B05D 3/0254 (2013.01); B05D 7/14 (2013.01); C08K 3/08 (2013.01); C08K 3/22 (2013.01); C09J 5/06 (2013.01); C09J 11/04 (2013.01); C09J 11/08 (2013.01)]

7 Claims

1. An electrical steel sheet adhesive coating composition comprising,

with reference to an entire solid of 100 wt %:

10 to 50 wt % of a resin with a side chain including an aromatic hydrocarbon;

5 to 40 wt % of an organic/inorganic composite with inorganic nanoparticles substituted for the resin;

10 to 30 wt % of a composite metal phosphate including at least one of a first aluminum phosphate (Al(H₂PO₄)₃), a first cobalt phosphate (Co(H₂PO₄)₂), a first calcium phosphate (Ca(H₂PO₄)₂), a first zinc phosphate (Zn(H₂PO₄)₂), and a first magnesium phosphate (Mg(H₂PO₄)₂);

5 to 50 wt % of phosphoric acid; and

1 to 15 wt % of a cohesion reinforcing agent including at least one of an oxide, carbon nanotubes (CNT), carbon black, a pigment, and a coupling agent.