US 12,473,437 B2
Fluoropolymer-based coating comprising a temperature indicator
Raphaël Turgis, Ecully (FR); Isabelle Joutang, Ecully (FR); Stephanie Le Bris, Ecully (FR); and Anne Teissier, Ecully (FR)
Assigned to SEB SA, (FR)
Appl. No. 17/925,891
Filed by SEB S.A., Ecully (FR)
PCT Filed May 18, 2021, PCT No. PCT/FR2021/050878
§ 371(c)(1), (2) Date Nov. 17, 2022,
PCT Pub. No. WO2021/234284, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 2005086 (FR), filed on May 19, 2020.
Prior Publication US 2023/0183497 A1, Jun. 15, 2023
Int. Cl. C09D 5/29 (2006.01); A45D 1/28 (2006.01); A45D 2/00 (2006.01); A47J 36/02 (2006.01); C09D 5/00 (2006.01); C09D 5/26 (2006.01); C09D 7/61 (2018.01); C09D 11/037 (2014.01); C09D 11/106 (2014.01); C09D 11/50 (2014.01); C09D 127/18 (2006.01); D06F 75/38 (2006.01); G01K 11/14 (2006.01)
CPC C09D 5/29 (2013.01) [A45D 1/28 (2013.01); A45D 2/001 (2013.01); A47J 36/02 (2013.01); C09D 5/002 (2013.01); C09D 5/26 (2013.01); C09D 7/61 (2018.01); C09D 11/037 (2013.01); C09D 11/106 (2013.01); C09D 11/50 (2013.01); C09D 127/18 (2013.01); D06F 75/38 (2013.01); G01K 11/14 (2013.01); A47J 2202/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A household article comprising a substrate, completely or partially covered with a coating comprising one or more primer coats comprising a fluoropolymer applied onto the substrate and at least two decorations (a) and (b) arranged on said primer coats:
(a) a decoration comprising at least a thermochromic pigment composition in the form of particles consisting of a (Bi1-xAx) (V1-yMy) O4 type pigment in which
x is equal to 0 or x is between 0.001 and 0.999,
y is equal to 0 or y is between 0.001 and 0.999,
A and M are chosen in the group consisting of nitrogen, phosphorus, an alkali metal, an alkaline earth metal, a transition metal, a poor metal, a metalloid or a lanthanide,
A and M are different from one another,
(b) a decoration comprising a temperature reference pigment composition;
wherein the ΔE* of the (Bi1-xAx) (V1-yMy) O4 pigment in said coating is greater than or equal to 11 between room temperature and 150° C., ΔE* being defined by the formula CIE1976 in the CIELAB colour space:
ΔE*=√(L2*−L1*)2+(a2*−a1*)2+(b2*−b1*)2
L1*, a1* and b1* values characterising the L*a*b* values of said compound at room temperature
L2*, a2* and b2* values characterising the L*a*b* values of said compound at 150° C.